[gentoo-commits] proj/linux-patches:4.4 commit in: /

[Mike Pagano]

commit:     99e4cd48b7fc7ffe5e9689983a0f607689471d1a
Author:     Mike Pagano <mpagano <AT> gentoo <DOT> org>
AuthorDate: Fri Feb 14 23:33:59 2020 +0000
Commit:     Mike Pagano <mpagano <AT> gentoo <DOT> org>
CommitDate: Fri Feb 14 23:33:59 2020 +0000
URL:        https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=99e4cd48

Linux patch 4.4.214

Signed-off-by: Mike Pagano <mpagano <AT> gentoo.org>

 0000_README              |     4 +
 1213_linux-4.4.214.patch | 11112 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 11116 insertions(+)

diff --git a/0000_README b/0000_README
index fb1c3ff..a0335a4 100644
--- a/0000_README
+++ b/0000_README
@@ -895,6 +895,10 @@ Patch:  1212_linux-4.4.213.patch
 From:   http://www.kernel.org
 Desc:   Linux 4.4.213
 
+Patch:  1213_linux-4.4.214.patch
+From:   http://www.kernel.org
+Desc:   Linux 4.4.214
+
 Patch:  1500_XATTR_USER_PREFIX.patch
 From:   https://bugs.gentoo.org/show_bug.cgi?id=470644
 Desc:   Support for namespace user.pax.* on tmpfs.

diff --git a/1213_linux-4.4.214.patch b/1213_linux-4.4.214.patch
new file mode 100644
index 0000000..d9f280f
--- /dev/null
+++ b/1213_linux-4.4.214.patch
@@ -0,0 +1,11112 @@
+diff --git a/Makefile b/Makefile
+index 6e86896525d9..89f09ef4c552 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,6 +1,6 @@
+ VERSION = 4
+ PATCHLEVEL = 4
+-SUBLEVEL = 213
++SUBLEVEL = 214
+ EXTRAVERSION =
+ NAME = Blurry Fish Butt
+ 
+diff --git a/arch/arc/boot/dts/axs10x_mb.dtsi b/arch/arc/boot/dts/axs10x_mb.dtsi
+index 44a578c10732..2f52e584f3f7 100644
+--- a/arch/arc/boot/dts/axs10x_mb.dtsi
++++ b/arch/arc/boot/dts/axs10x_mb.dtsi
+@@ -44,6 +44,7 @@
+ 			interrupt-names = "macirq";
+ 			phy-mode = "rgmii";
+ 			snps,pbl = < 32 >;
++			snps,multicast-filter-bins = <256>;
+ 			clocks = <&apbclk>;
+ 			clock-names = "stmmaceth";
+ 			max-speed = <100>;
+diff --git a/arch/arm/boot/dts/sama5d3.dtsi b/arch/arm/boot/dts/sama5d3.dtsi
+index a53279160f98..6b1894400ccc 100644
+--- a/arch/arm/boot/dts/sama5d3.dtsi
++++ b/arch/arm/boot/dts/sama5d3.dtsi
+@@ -1106,49 +1106,49 @@
+ 					usart0_clk: usart0_clk {
+ 						#clock-cells = <0>;
+ 						reg = <12>;
+-						atmel,clk-output-range = <0 66000000>;
++						atmel,clk-output-range = <0 83000000>;
+ 					};
+ 
+ 					usart1_clk: usart1_clk {
+ 						#clock-cells = <0>;
+ 						reg = <13>;
+-						atmel,clk-output-range = <0 66000000>;
++						atmel,clk-output-range = <0 83000000>;
+ 					};
+ 
+ 					usart2_clk: usart2_clk {
+ 						#clock-cells = <0>;
+ 						reg = <14>;
+-						atmel,clk-output-range = <0 66000000>;
++						atmel,clk-output-range = <0 83000000>;
+ 					};
+ 
+ 					usart3_clk: usart3_clk {
+ 						#clock-cells = <0>;
+ 						reg = <15>;
+-						atmel,clk-output-range = <0 66000000>;
++						atmel,clk-output-range = <0 83000000>;
+ 					};
+ 
+ 					uart0_clk: uart0_clk {
+ 						#clock-cells = <0>;
+ 						reg = <16>;
+-						atmel,clk-output-range = <0 66000000>;
++						atmel,clk-output-range = <0 83000000>;
+ 					};
+ 
+ 					twi0_clk: twi0_clk {
+ 						reg = <18>;
+ 						#clock-cells = <0>;
+-						atmel,clk-output-range = <0 16625000>;
++						atmel,clk-output-range = <0 41500000>;
+ 					};
+ 
+ 					twi1_clk: twi1_clk {
+ 						#clock-cells = <0>;
+ 						reg = <19>;
+-						atmel,clk-output-range = <0 16625000>;
++						atmel,clk-output-range = <0 41500000>;
+ 					};
+ 
+ 					twi2_clk: twi2_clk {
+ 						#clock-cells = <0>;
+ 						reg = <20>;
+-						atmel,clk-output-range = <0 16625000>;
++						atmel,clk-output-range = <0 41500000>;
+ 					};
+ 
+ 					mci0_clk: mci0_clk {
+@@ -1164,19 +1164,19 @@
+ 					spi0_clk: spi0_clk {
+ 						#clock-cells = <0>;
+ 						reg = <24>;
+-						atmel,clk-output-range = <0 133000000>;
++						atmel,clk-output-range = <0 166000000>;
+ 					};
+ 
+ 					spi1_clk: spi1_clk {
+ 						#clock-cells = <0>;
+ 						reg = <25>;
+-						atmel,clk-output-range = <0 133000000>;
++						atmel,clk-output-range = <0 166000000>;
+ 					};
+ 
+ 					tcb0_clk: tcb0_clk {
+ 						#clock-cells = <0>;
+ 						reg = <26>;
+-						atmel,clk-output-range = <0 133000000>;
++						atmel,clk-output-range = <0 166000000>;
+ 					};
+ 
+ 					pwm_clk: pwm_clk {
+@@ -1187,7 +1187,7 @@
+ 					adc_clk: adc_clk {
+ 						#clock-cells = <0>;
+ 						reg = <29>;
+-						atmel,clk-output-range = <0 66000000>;
++						atmel,clk-output-range = <0 83000000>;
+ 					};
+ 
+ 					dma0_clk: dma0_clk {
+@@ -1218,13 +1218,13 @@
+ 					ssc0_clk: ssc0_clk {
+ 						#clock-cells = <0>;
+ 						reg = <38>;
+-						atmel,clk-output-range = <0 66000000>;
++						atmel,clk-output-range = <0 83000000>;
+ 					};
+ 
+ 					ssc1_clk: ssc1_clk {
+ 						#clock-cells = <0>;
+ 						reg = <39>;
+-						atmel,clk-output-range = <0 66000000>;
++						atmel,clk-output-range = <0 83000000>;
+ 					};
+ 
+ 					sha_clk: sha_clk {
+diff --git a/arch/arm/boot/dts/sama5d3_can.dtsi b/arch/arm/boot/dts/sama5d3_can.dtsi
+index c5a3772741bf..0fac79f75c06 100644
+--- a/arch/arm/boot/dts/sama5d3_can.dtsi
++++ b/arch/arm/boot/dts/sama5d3_can.dtsi
+@@ -37,13 +37,13 @@
+ 					can0_clk: can0_clk {
+ 						#clock-cells = <0>;
+ 						reg = <40>;
+-						atmel,clk-output-range = <0 66000000>;
++						atmel,clk-output-range = <0 83000000>;
+ 					};
+ 
+ 					can1_clk: can1_clk {
+ 						#clock-cells = <0>;
+ 						reg = <41>;
+-						atmel,clk-output-range = <0 66000000>;
++						atmel,clk-output-range = <0 83000000>;
+ 					};
+ 				};
+ 			};
+diff --git a/arch/arm/boot/dts/sama5d3_tcb1.dtsi b/arch/arm/boot/dts/sama5d3_tcb1.dtsi
+index 801f9745e82f..b80dbc45a3c2 100644
+--- a/arch/arm/boot/dts/sama5d3_tcb1.dtsi
++++ b/arch/arm/boot/dts/sama5d3_tcb1.dtsi
+@@ -23,6 +23,7 @@
+ 					tcb1_clk: tcb1_clk {
+ 						#clock-cells = <0>;
+ 						reg = <27>;
++						atmel,clk-output-range = <0 166000000>;
+ 					};
+ 				};
+ 			};
+diff --git a/arch/arm/boot/dts/sama5d3_uart.dtsi b/arch/arm/boot/dts/sama5d3_uart.dtsi
+index 2511d748867b..71818c7bfb67 100644
+--- a/arch/arm/boot/dts/sama5d3_uart.dtsi
++++ b/arch/arm/boot/dts/sama5d3_uart.dtsi
+@@ -42,13 +42,13 @@
+ 					uart0_clk: uart0_clk {
+ 						#clock-cells = <0>;
+ 						reg = <16>;
+-						atmel,clk-output-range = <0 66000000>;
++						atmel,clk-output-range = <0 83000000>;
+ 					};
+ 
+ 					uart1_clk: uart1_clk {
+ 						#clock-cells = <0>;
+ 						reg = <17>;
+-						atmel,clk-output-range = <0 66000000>;
++						atmel,clk-output-range = <0 83000000>;
+ 					};
+ 				};
+ 			};
+diff --git a/arch/arm/mach-tegra/sleep-tegra30.S b/arch/arm/mach-tegra/sleep-tegra30.S
+index 9a2f0b051e10..c6cf775975a2 100644
+--- a/arch/arm/mach-tegra/sleep-tegra30.S
++++ b/arch/arm/mach-tegra/sleep-tegra30.S
+@@ -379,6 +379,14 @@ _pll_m_c_x_done:
+ 	pll_locked r1, r0, CLK_RESET_PLLC_BASE
+ 	pll_locked r1, r0, CLK_RESET_PLLX_BASE
+ 
++	tegra_get_soc_id TEGRA_APB_MISC_BASE, r1
++	cmp	r1, #TEGRA30
++	beq	1f
++	ldr	r1, [r0, #CLK_RESET_PLLP_BASE]
++	bic	r1, r1, #(1<<31)	@ disable PllP bypass
++	str	r1, [r0, #CLK_RESET_PLLP_BASE]
++1:
++
+ 	mov32	r7, TEGRA_TMRUS_BASE
+ 	ldr	r1, [r7]
+ 	add	r1, r1, #LOCK_DELAY
+@@ -638,7 +646,10 @@ tegra30_switch_cpu_to_clk32k:
+ 	str	r0, [r4, #PMC_PLLP_WB0_OVERRIDE]
+ 
+ 	/* disable PLLP, PLLA, PLLC and PLLX */
++	tegra_get_soc_id TEGRA_APB_MISC_BASE, r1
++	cmp	r1, #TEGRA30
+ 	ldr	r0, [r5, #CLK_RESET_PLLP_BASE]
++	orrne	r0, r0, #(1 << 31)	@ enable PllP bypass on fast cluster
+ 	bic	r0, r0, #(1 << 30)
+ 	str	r0, [r5, #CLK_RESET_PLLP_BASE]
+ 	ldr	r0, [r5, #CLK_RESET_PLLA_BASE]
+diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
+index 01b6c00a7060..4ece20178145 100644
+--- a/arch/powerpc/Kconfig
++++ b/arch/powerpc/Kconfig
+@@ -93,6 +93,7 @@ config PPC
+ 	select BINFMT_ELF
+ 	select ARCH_HAS_ELF_RANDOMIZE
+ 	select OF
++	select OF_DMA_DEFAULT_COHERENT		if !NOT_COHERENT_CACHE
+ 	select OF_EARLY_FLATTREE
+ 	select OF_RESERVED_MEM
+ 	select HAVE_FTRACE_MCOUNT_RECORD
+diff --git a/arch/powerpc/boot/4xx.c b/arch/powerpc/boot/4xx.c
+index 9d3bd4c45a24..1c4354f922fd 100644
+--- a/arch/powerpc/boot/4xx.c
++++ b/arch/powerpc/boot/4xx.c
+@@ -232,7 +232,7 @@ void ibm4xx_denali_fixup_memsize(void)
+ 		dpath = 8; /* 64 bits */
+ 
+ 	/* get address pins (rows) */
+- 	val = SDRAM0_READ(DDR0_42);
++	val = SDRAM0_READ(DDR0_42);
+ 
+ 	row = DDR_GET_VAL(val, DDR_APIN, DDR_APIN_SHIFT);
+ 	if (row > max_row)
+diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
+index 767ac1572c02..54c6ba87a25a 100644
+--- a/arch/powerpc/kvm/book3s_hv.c
++++ b/arch/powerpc/kvm/book3s_hv.c
+@@ -1669,7 +1669,7 @@ static struct kvm_vcpu *kvmppc_core_vcpu_create_hv(struct kvm *kvm,
+ 	mutex_unlock(&kvm->lock);
+ 
+ 	if (!vcore)
+-		goto free_vcpu;
++		goto uninit_vcpu;
+ 
+ 	spin_lock(&vcore->lock);
+ 	++vcore->num_threads;
+@@ -1685,6 +1685,8 @@ static struct kvm_vcpu *kvmppc_core_vcpu_create_hv(struct kvm *kvm,
+ 
+ 	return vcpu;
+ 
++uninit_vcpu:
++	kvm_vcpu_uninit(vcpu);
+ free_vcpu:
+ 	kmem_cache_free(kvm_vcpu_cache, vcpu);
+ out:
+diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c
+index 81313844d81c..91db2852aa6e 100644
+--- a/arch/powerpc/kvm/book3s_pr.c
++++ b/arch/powerpc/kvm/book3s_pr.c
+@@ -1434,10 +1434,12 @@ static struct kvm_vcpu *kvmppc_core_vcpu_create_pr(struct kvm *kvm,
+ 
+ 	err = kvmppc_mmu_init(vcpu);
+ 	if (err < 0)
+-		goto uninit_vcpu;
++		goto free_shared_page;
+ 
+ 	return vcpu;
+ 
++free_shared_page:
++	free_page((unsigned long)vcpu->arch.shared);
+ uninit_vcpu:
+ 	kvm_vcpu_uninit(vcpu);
+ free_shadow_vcpu:
+diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
+index e8b1027e1b5b..0e65d52eb56d 100644
+--- a/arch/powerpc/platforms/pseries/hotplug-memory.c
++++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
+@@ -205,8 +205,10 @@ static bool lmb_is_removable(struct of_drconf_cell *lmb)
+ 
+ 	for (i = 0; i < scns_per_block; i++) {
+ 		pfn = PFN_DOWN(phys_addr);
+-		if (!pfn_present(pfn))
++		if (!pfn_present(pfn)) {
++			phys_addr += MIN_MEMORY_BLOCK_SIZE;
+ 			continue;
++		}
+ 
+ 		rc &= is_mem_section_removable(pfn, PAGES_PER_SECTION);
+ 		phys_addr += MIN_MEMORY_BLOCK_SIZE;
+diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
+index 3e8865b187de..17b322e8b799 100644
+--- a/arch/powerpc/platforms/pseries/iommu.c
++++ b/arch/powerpc/platforms/pseries/iommu.c
+@@ -202,10 +202,10 @@ static unsigned long tce_get_pseries(struct iommu_table *tbl, long index)
+ 	return be64_to_cpu(*tcep);
+ }
+ 
+-static void tce_free_pSeriesLP(struct iommu_table*, long, long);
++static void tce_free_pSeriesLP(unsigned long liobn, long, long);
+ static void tce_freemulti_pSeriesLP(struct iommu_table*, long, long);
+ 
+-static int tce_build_pSeriesLP(struct iommu_table *tbl, long tcenum,
++static int tce_build_pSeriesLP(unsigned long liobn, long tcenum, long tceshift,
+ 				long npages, unsigned long uaddr,
+ 				enum dma_data_direction direction,
+ 				struct dma_attrs *attrs)
+@@ -216,25 +216,25 @@ static int tce_build_pSeriesLP(struct iommu_table *tbl, long tcenum,
+ 	int ret = 0;
+ 	long tcenum_start = tcenum, npages_start = npages;
+ 
+-	rpn = __pa(uaddr) >> TCE_SHIFT;
++	rpn = __pa(uaddr) >> tceshift;
+ 	proto_tce = TCE_PCI_READ;
+ 	if (direction != DMA_TO_DEVICE)
+ 		proto_tce |= TCE_PCI_WRITE;
+ 
+ 	while (npages--) {
+-		tce = proto_tce | (rpn & TCE_RPN_MASK) << TCE_RPN_SHIFT;
+-		rc = plpar_tce_put((u64)tbl->it_index, (u64)tcenum << 12, tce);
++		tce = proto_tce | (rpn & TCE_RPN_MASK) << tceshift;
++		rc = plpar_tce_put((u64)liobn, (u64)tcenum << tceshift, tce);
+ 
+ 		if (unlikely(rc == H_NOT_ENOUGH_RESOURCES)) {
+ 			ret = (int)rc;
+-			tce_free_pSeriesLP(tbl, tcenum_start,
++			tce_free_pSeriesLP(liobn, tcenum_start,
+ 			                   (npages_start - (npages + 1)));
+ 			break;
+ 		}
+ 
+ 		if (rc && printk_ratelimit()) {
+ 			printk("tce_build_pSeriesLP: plpar_tce_put failed. rc=%lld\n", rc);
+-			printk("\tindex   = 0x%llx\n", (u64)tbl->it_index);
++			printk("\tindex   = 0x%llx\n", (u64)liobn);
+ 			printk("\ttcenum  = 0x%llx\n", (u64)tcenum);
+ 			printk("\ttce val = 0x%llx\n", tce );
+ 			dump_stack();
+@@ -263,7 +263,8 @@ static int tce_buildmulti_pSeriesLP(struct iommu_table *tbl, long tcenum,
+ 	unsigned long flags;
+ 
+ 	if ((npages == 1) || !firmware_has_feature(FW_FEATURE_MULTITCE)) {
+-		return tce_build_pSeriesLP(tbl, tcenum, npages, uaddr,
++		return tce_build_pSeriesLP(tbl->it_index, tcenum,
++					   tbl->it_page_shift, npages, uaddr,
+ 		                           direction, attrs);
+ 	}
+ 
+@@ -279,8 +280,9 @@ static int tce_buildmulti_pSeriesLP(struct iommu_table *tbl, long tcenum,
+ 		/* If allocation fails, fall back to the loop implementation */
+ 		if (!tcep) {
+ 			local_irq_restore(flags);
+-			return tce_build_pSeriesLP(tbl, tcenum, npages, uaddr,
+-					    direction, attrs);
++			return tce_build_pSeriesLP(tbl->it_index, tcenum,
++					tbl->it_page_shift,
++					npages, uaddr, direction, attrs);
+ 		}
+ 		__this_cpu_write(tce_page, tcep);
+ 	}
+@@ -331,16 +333,16 @@ static int tce_buildmulti_pSeriesLP(struct iommu_table *tbl, long tcenum,
+ 	return ret;
+ }
+ 
+-static void tce_free_pSeriesLP(struct iommu_table *tbl, long tcenum, long npages)
++static void tce_free_pSeriesLP(unsigned long liobn, long tcenum, long npages)
+ {
+ 	u64 rc;
+ 
+ 	while (npages--) {
+-		rc = plpar_tce_put((u64)tbl->it_index, (u64)tcenum << 12, 0);
++		rc = plpar_tce_put((u64)liobn, (u64)tcenum << 12, 0);
+ 
+ 		if (rc && printk_ratelimit()) {
+ 			printk("tce_free_pSeriesLP: plpar_tce_put failed. rc=%lld\n", rc);
+-			printk("\tindex   = 0x%llx\n", (u64)tbl->it_index);
++			printk("\tindex   = 0x%llx\n", (u64)liobn);
+ 			printk("\ttcenum  = 0x%llx\n", (u64)tcenum);
+ 			dump_stack();
+ 		}
+@@ -355,7 +357,7 @@ static void tce_freemulti_pSeriesLP(struct iommu_table *tbl, long tcenum, long n
+ 	u64 rc;
+ 
+ 	if (!firmware_has_feature(FW_FEATURE_MULTITCE))
+-		return tce_free_pSeriesLP(tbl, tcenum, npages);
++		return tce_free_pSeriesLP(tbl->it_index, tcenum, npages);
+ 
+ 	rc = plpar_tce_stuff((u64)tbl->it_index, (u64)tcenum << 12, 0, npages);
+ 
+@@ -470,6 +472,19 @@ static int tce_setrange_multi_pSeriesLP(unsigned long start_pfn,
+ 	u64 rc = 0;
+ 	long l, limit;
+ 
++	if (!firmware_has_feature(FW_FEATURE_MULTITCE)) {
++		unsigned long tceshift = be32_to_cpu(maprange->tce_shift);
++		unsigned long dmastart = (start_pfn << PAGE_SHIFT) +
++				be64_to_cpu(maprange->dma_base);
++		unsigned long tcenum = dmastart >> tceshift;
++		unsigned long npages = num_pfn << PAGE_SHIFT >> tceshift;
++		void *uaddr = __va(start_pfn << PAGE_SHIFT);
++
++		return tce_build_pSeriesLP(be32_to_cpu(maprange->liobn),
++				tcenum, tceshift, npages, (unsigned long) uaddr,
++				DMA_BIDIRECTIONAL, 0);
++	}
++
+ 	local_irq_disable();	/* to protect tcep and the page behind it */
+ 	tcep = __this_cpu_read(tce_page);
+ 
+diff --git a/arch/sparc/include/uapi/asm/ipcbuf.h b/arch/sparc/include/uapi/asm/ipcbuf.h
+index 66013b4fe10d..58da9c4addb2 100644
+--- a/arch/sparc/include/uapi/asm/ipcbuf.h
++++ b/arch/sparc/include/uapi/asm/ipcbuf.h
+@@ -14,19 +14,19 @@
+ 
+ struct ipc64_perm
+ {
+-	__kernel_key_t	key;
+-	__kernel_uid_t	uid;
+-	__kernel_gid_t	gid;
+-	__kernel_uid_t	cuid;
+-	__kernel_gid_t	cgid;
++	__kernel_key_t		key;
++	__kernel_uid32_t	uid;
++	__kernel_gid32_t	gid;
++	__kernel_uid32_t	cuid;
++	__kernel_gid32_t	cgid;
+ #ifndef __arch64__
+-	unsigned short	__pad0;
++	unsigned short		__pad0;
+ #endif
+-	__kernel_mode_t	mode;
+-	unsigned short	__pad1;
+-	unsigned short	seq;
+-	unsigned long long __unused1;
+-	unsigned long long __unused2;
++	__kernel_mode_t		mode;
++	unsigned short		__pad1;
++	unsigned short		seq;
++	unsigned long long	__unused1;
++	unsigned long long	__unused2;
+ };
+ 
+ #endif /* __SPARC_IPCBUF_H */
+diff --git a/arch/x86/kernel/cpu/tsx.c b/arch/x86/kernel/cpu/tsx.c
+index c2a9dd816c5c..9a7983968ba8 100644
+--- a/arch/x86/kernel/cpu/tsx.c
++++ b/arch/x86/kernel/cpu/tsx.c
+@@ -115,11 +115,12 @@ void __init tsx_init(void)
+ 		tsx_disable();
+ 
+ 		/*
+-		 * tsx_disable() will change the state of the
+-		 * RTM CPUID bit.  Clear it here since it is now
+-		 * expected to be not set.
++		 * tsx_disable() will change the state of the RTM and HLE CPUID
++		 * bits. Clear them here since they are now expected to be not
++		 * set.
+ 		 */
+ 		setup_clear_cpu_cap(X86_FEATURE_RTM);
++		setup_clear_cpu_cap(X86_FEATURE_HLE);
+ 	} else if (tsx_ctrl_state == TSX_CTRL_ENABLE) {
+ 
+ 		/*
+@@ -131,10 +132,10 @@ void __init tsx_init(void)
+ 		tsx_enable();
+ 
+ 		/*
+-		 * tsx_enable() will change the state of the
+-		 * RTM CPUID bit.  Force it here since it is now
+-		 * expected to be set.
++		 * tsx_enable() will change the state of the RTM and HLE CPUID
++		 * bits. Force them here since they are now expected to be set.
+ 		 */
+ 		setup_force_cpu_cap(X86_FEATURE_RTM);
++		setup_force_cpu_cap(X86_FEATURE_HLE);
+ 	}
+ }
+diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
+index 6c7847b3aa2d..ffbdd201c1f1 100644
+--- a/arch/x86/kvm/emulate.c
++++ b/arch/x86/kvm/emulate.c
+@@ -23,6 +23,7 @@
+ #include <linux/kvm_host.h>
+ #include "kvm_cache_regs.h"
+ #include <linux/module.h>
++#include <linux/nospec.h>
+ #include <asm/kvm_emulate.h>
+ #include <linux/stringify.h>
+ #include <asm/debugreg.h>
+@@ -5041,16 +5042,28 @@ int x86_decode_insn(struct x86_emulate_ctxt *ctxt, void *insn, int insn_len)
+ 				ctxt->ad_bytes = def_ad_bytes ^ 6;
+ 			break;
+ 		case 0x26:	/* ES override */
++			has_seg_override = true;
++			ctxt->seg_override = VCPU_SREG_ES;
++			break;
+ 		case 0x2e:	/* CS override */
++			has_seg_override = true;
++			ctxt->seg_override = VCPU_SREG_CS;
++			break;
+ 		case 0x36:	/* SS override */
++			has_seg_override = true;
++			ctxt->seg_override = VCPU_SREG_SS;
++			break;
+ 		case 0x3e:	/* DS override */
+ 			has_seg_override = true;
+-			ctxt->seg_override = (ctxt->b >> 3) & 3;
++			ctxt->seg_override = VCPU_SREG_DS;
+ 			break;
+ 		case 0x64:	/* FS override */
++			has_seg_override = true;
++			ctxt->seg_override = VCPU_SREG_FS;
++			break;
+ 		case 0x65:	/* GS override */
+ 			has_seg_override = true;
+-			ctxt->seg_override = ctxt->b & 7;
++			ctxt->seg_override = VCPU_SREG_GS;
+ 			break;
+ 		case 0x40 ... 0x4f: /* REX */
+ 			if (mode != X86EMUL_MODE_PROT64)
+@@ -5134,10 +5147,15 @@ done_prefixes:
+ 			}
+ 			break;
+ 		case Escape:
+-			if (ctxt->modrm > 0xbf)
+-				opcode = opcode.u.esc->high[ctxt->modrm - 0xc0];
+-			else
++			if (ctxt->modrm > 0xbf) {
++				size_t size = ARRAY_SIZE(opcode.u.esc->high);
++				u32 index = array_index_nospec(
++					ctxt->modrm - 0xc0, size);
++
++				opcode = opcode.u.esc->high[index];
++			} else {
+ 				opcode = opcode.u.esc->op[(ctxt->modrm >> 3) & 7];
++			}
+ 			break;
+ 		case InstrDual:
+ 			if ((ctxt->modrm >> 6) == 3)
+diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
+index 62cf8c915e95..fce6fa012d30 100644
+--- a/arch/x86/kvm/hyperv.c
++++ b/arch/x86/kvm/hyperv.c
+@@ -26,6 +26,7 @@
+ #include "hyperv.h"
+ 
+ #include <linux/kvm_host.h>
++#include <linux/nospec.h>
+ #include <trace/events/kvm.h>
+ 
+ #include "trace.h"
+@@ -53,11 +54,12 @@ static int kvm_hv_msr_get_crash_data(struct kvm_vcpu *vcpu,
+ 				     u32 index, u64 *pdata)
+ {
+ 	struct kvm_hv *hv = &vcpu->kvm->arch.hyperv;
++	size_t size = ARRAY_SIZE(hv->hv_crash_param);
+ 
+-	if (WARN_ON_ONCE(index >= ARRAY_SIZE(hv->hv_crash_param)))
++	if (WARN_ON_ONCE(index >= size))
+ 		return -EINVAL;
+ 
+-	*pdata = hv->hv_crash_param[index];
++	*pdata = hv->hv_crash_param[array_index_nospec(index, size)];
+ 	return 0;
+ }
+ 
+@@ -96,11 +98,12 @@ static int kvm_hv_msr_set_crash_data(struct kvm_vcpu *vcpu,
+ 				     u32 index, u64 data)
+ {
+ 	struct kvm_hv *hv = &vcpu->kvm->arch.hyperv;
++	size_t size = ARRAY_SIZE(hv->hv_crash_param);
+ 
+-	if (WARN_ON_ONCE(index >= ARRAY_SIZE(hv->hv_crash_param)))
++	if (WARN_ON_ONCE(index >= size))
+ 		return -EINVAL;
+ 
+-	hv->hv_crash_param[index] = data;
++	hv->hv_crash_param[array_index_nospec(index, size)] = data;
+ 	return 0;
+ }
+ 
+diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c
+index 7cc2360f1848..791850bfc981 100644
+--- a/arch/x86/kvm/i8259.c
++++ b/arch/x86/kvm/i8259.c
+@@ -456,46 +456,37 @@ static u32 elcr_ioport_read(void *opaque, u32 addr1)
+ 	return s->elcr;
+ }
+ 
+-static int picdev_in_range(gpa_t addr)
+-{
+-	switch (addr) {
+-	case 0x20:
+-	case 0x21:
+-	case 0xa0:
+-	case 0xa1:
+-	case 0x4d0:
+-	case 0x4d1:
+-		return 1;
+-	default:
+-		return 0;
+-	}
+-}
+-
+ static int picdev_write(struct kvm_pic *s,
+ 			 gpa_t addr, int len, const void *val)
+ {
+ 	unsigned char data = *(unsigned char *)val;
+-	if (!picdev_in_range(addr))
+-		return -EOPNOTSUPP;
+ 
+ 	if (len != 1) {
+ 		pr_pic_unimpl("non byte write\n");
+ 		return 0;
+ 	}
+-	pic_lock(s);
+ 	switch (addr) {
+ 	case 0x20:
+ 	case 0x21:
++		pic_lock(s);
++		pic_ioport_write(&s->pics[0], addr, data);
++		pic_unlock(s);
++		break;
+ 	case 0xa0:
+ 	case 0xa1:
+-		pic_ioport_write(&s->pics[addr >> 7], addr, data);
++		pic_lock(s);
++		pic_ioport_write(&s->pics[1], addr, data);
++		pic_unlock(s);
+ 		break;
+ 	case 0x4d0:
+ 	case 0x4d1:
++		pic_lock(s);
+ 		elcr_ioport_write(&s->pics[addr & 1], addr, data);
++		pic_unlock(s);
+ 		break;
++	default:
++		return -EOPNOTSUPP;
+ 	}
+-	pic_unlock(s);
+ 	return 0;
+ }
+ 
+@@ -503,29 +494,31 @@ static int picdev_read(struct kvm_pic *s,
+ 		       gpa_t addr, int len, void *val)
+ {
+ 	unsigned char data = 0;
+-	if (!picdev_in_range(addr))
+-		return -EOPNOTSUPP;
+ 
+ 	if (len != 1) {
+ 		memset(val, 0, len);
+ 		pr_pic_unimpl("non byte read\n");
+ 		return 0;
+ 	}
+-	pic_lock(s);
+ 	switch (addr) {
+ 	case 0x20:
+ 	case 0x21:
+ 	case 0xa0:
+ 	case 0xa1:
++		pic_lock(s);
+ 		data = pic_ioport_read(&s->pics[addr >> 7], addr);
++		pic_unlock(s);
+ 		break;
+ 	case 0x4d0:
+ 	case 0x4d1:
++		pic_lock(s);
+ 		data = elcr_ioport_read(&s->pics[addr & 1], addr);
++		pic_unlock(s);
+ 		break;
++	default:
++		return -EOPNOTSUPP;
+ 	}
+ 	*(unsigned char *)val = data;
+-	pic_unlock(s);
+ 	return 0;
+ }
+ 
+diff --git a/arch/x86/kvm/ioapic.c b/arch/x86/kvm/ioapic.c
+index d380111351c0..086833ecb9f2 100644
+--- a/arch/x86/kvm/ioapic.c
++++ b/arch/x86/kvm/ioapic.c
+@@ -36,6 +36,7 @@
+ #include <linux/io.h>
+ #include <linux/slab.h>
+ #include <linux/export.h>
++#include <linux/nospec.h>
+ #include <asm/processor.h>
+ #include <asm/page.h>
+ #include <asm/current.h>
+@@ -73,13 +74,14 @@ static unsigned long ioapic_read_indirect(struct kvm_ioapic *ioapic,
+ 	default:
+ 		{
+ 			u32 redir_index = (ioapic->ioregsel - 0x10) >> 1;
+-			u64 redir_content;
++			u64 redir_content = ~0ULL;
+ 
+-			if (redir_index < IOAPIC_NUM_PINS)
+-				redir_content =
+-					ioapic->redirtbl[redir_index].bits;
+-			else
+-				redir_content = ~0ULL;
++			if (redir_index < IOAPIC_NUM_PINS) {
++				u32 index = array_index_nospec(
++					redir_index, IOAPIC_NUM_PINS);
++
++				redir_content = ioapic->redirtbl[index].bits;
++			}
+ 
+ 			result = (ioapic->ioregsel & 0x1) ?
+ 			    (redir_content >> 32) & 0xffffffff :
+@@ -289,6 +291,7 @@ static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val)
+ 		ioapic_debug("change redir index %x val %x\n", index, val);
+ 		if (index >= IOAPIC_NUM_PINS)
+ 			return;
++		index = array_index_nospec(index, IOAPIC_NUM_PINS);
+ 		e = &ioapic->redirtbl[index];
+ 		mask_before = e->fields.mask;
+ 		/* Preserve read-only fields */
+diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
+index 3c70f6c76d3a..ce8c4ae25c15 100644
+--- a/arch/x86/kvm/lapic.c
++++ b/arch/x86/kvm/lapic.c
+@@ -36,6 +36,7 @@
+ #include <asm/delay.h>
+ #include <linux/atomic.h>
+ #include <linux/jump_label.h>
++#include <linux/nospec.h>
+ #include "kvm_cache_regs.h"
+ #include "irq.h"
+ #include "trace.h"
+@@ -1432,15 +1433,21 @@ static int apic_reg_write(struct kvm_lapic *apic, u32 reg, u32 val)
+ 	case APIC_LVTTHMR:
+ 	case APIC_LVTPC:
+ 	case APIC_LVT1:
+-	case APIC_LVTERR:
++	case APIC_LVTERR: {
+ 		/* TODO: Check vector */
++		size_t size;
++		u32 index;
++
+ 		if (!kvm_apic_sw_enabled(apic))
+ 			val |= APIC_LVT_MASKED;
+ 
+-		val &= apic_lvt_mask[(reg - APIC_LVTT) >> 4];
++		size = ARRAY_SIZE(apic_lvt_mask);
++		index = array_index_nospec(
++				(reg - APIC_LVTT) >> 4, size);
++		val &= apic_lvt_mask[index];
+ 		apic_set_reg(apic, reg, val);
+-
+ 		break;
++	}
+ 
+ 	case APIC_LVTT:
+ 		if (!kvm_apic_sw_enabled(apic))
+diff --git a/arch/x86/kvm/mtrr.c b/arch/x86/kvm/mtrr.c
+index 0149ac59c273..3e3016411020 100644
+--- a/arch/x86/kvm/mtrr.c
++++ b/arch/x86/kvm/mtrr.c
+@@ -17,6 +17,7 @@
+  */
+ 
+ #include <linux/kvm_host.h>
++#include <linux/nospec.h>
+ #include <asm/mtrr.h>
+ 
+ #include "cpuid.h"
+@@ -202,11 +203,15 @@ static bool fixed_msr_to_seg_unit(u32 msr, int *seg, int *unit)
+ 		break;
+ 	case MSR_MTRRfix16K_80000 ... MSR_MTRRfix16K_A0000:
+ 		*seg = 1;
+-		*unit = msr - MSR_MTRRfix16K_80000;
++		*unit = array_index_nospec(
++			msr - MSR_MTRRfix16K_80000,
++			MSR_MTRRfix16K_A0000 - MSR_MTRRfix16K_80000 + 1);
+ 		break;
+ 	case MSR_MTRRfix4K_C0000 ... MSR_MTRRfix4K_F8000:
+ 		*seg = 2;
+-		*unit = msr - MSR_MTRRfix4K_C0000;
++		*unit = array_index_nospec(
++			msr - MSR_MTRRfix4K_C0000,
++			MSR_MTRRfix4K_F8000 - MSR_MTRRfix4K_C0000 + 1);
+ 		break;
+ 	default:
+ 		return false;
+diff --git a/arch/x86/kvm/pmu.h b/arch/x86/kvm/pmu.h
+index f96e1f962587..fbf3d25af765 100644
+--- a/arch/x86/kvm/pmu.h
++++ b/arch/x86/kvm/pmu.h
+@@ -1,6 +1,8 @@
+ #ifndef __KVM_X86_PMU_H
+ #define __KVM_X86_PMU_H
+ 
++#include <linux/nospec.h>
++
+ #define vcpu_to_pmu(vcpu) (&(vcpu)->arch.pmu)
+ #define pmu_to_vcpu(pmu)  (container_of((pmu), struct kvm_vcpu, arch.pmu))
+ #define pmc_to_pmu(pmc)   (&(pmc)->vcpu->arch.pmu)
+@@ -80,8 +82,12 @@ static inline bool pmc_is_enabled(struct kvm_pmc *pmc)
+ static inline struct kvm_pmc *get_gp_pmc(struct kvm_pmu *pmu, u32 msr,
+ 					 u32 base)
+ {
+-	if (msr >= base && msr < base + pmu->nr_arch_gp_counters)
+-		return &pmu->gp_counters[msr - base];
++	if (msr >= base && msr < base + pmu->nr_arch_gp_counters) {
++		u32 index = array_index_nospec(msr - base,
++					       pmu->nr_arch_gp_counters);
++
++		return &pmu->gp_counters[index];
++	}
+ 
+ 	return NULL;
+ }
+@@ -91,8 +97,12 @@ static inline struct kvm_pmc *get_fixed_pmc(struct kvm_pmu *pmu, u32 msr)
+ {
+ 	int base = MSR_CORE_PERF_FIXED_CTR0;
+ 
+-	if (msr >= base && msr < base + pmu->nr_arch_fixed_counters)
+-		return &pmu->fixed_counters[msr - base];
++	if (msr >= base && msr < base + pmu->nr_arch_fixed_counters) {
++		u32 index = array_index_nospec(msr - base,
++					       pmu->nr_arch_fixed_counters);
++
++		return &pmu->fixed_counters[index];
++	}
+ 
+ 	return NULL;
+ }
+diff --git a/arch/x86/kvm/pmu_intel.c b/arch/x86/kvm/pmu_intel.c
+index 8fc07ea23344..822829f00590 100644
+--- a/arch/x86/kvm/pmu_intel.c
++++ b/arch/x86/kvm/pmu_intel.c
+@@ -87,10 +87,14 @@ static unsigned intel_find_arch_event(struct kvm_pmu *pmu,
+ 
+ static unsigned intel_find_fixed_event(int idx)
+ {
+-	if (idx >= ARRAY_SIZE(fixed_pmc_events))
++	u32 event;
++	size_t size = ARRAY_SIZE(fixed_pmc_events);
++
++	if (idx >= size)
+ 		return PERF_COUNT_HW_MAX;
+ 
+-	return intel_arch_events[fixed_pmc_events[idx]].event_type;
++	event = fixed_pmc_events[array_index_nospec(idx, size)];
++	return intel_arch_events[event].event_type;
+ }
+ 
+ /* check if a PMC is enabled by comparising it with globl_ctrl bits. */
+@@ -131,15 +135,19 @@ static struct kvm_pmc *intel_msr_idx_to_pmc(struct kvm_vcpu *vcpu,
+ 	struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
+ 	bool fixed = idx & (1u << 30);
+ 	struct kvm_pmc *counters;
++	unsigned int num_counters;
+ 
+ 	idx &= ~(3u << 30);
+-	if (!fixed && idx >= pmu->nr_arch_gp_counters)
+-		return NULL;
+-	if (fixed && idx >= pmu->nr_arch_fixed_counters)
++	if (fixed) {
++		counters = pmu->fixed_counters;
++		num_counters = pmu->nr_arch_fixed_counters;
++	} else {
++		counters = pmu->gp_counters;
++		num_counters = pmu->nr_arch_gp_counters;
++	}
++	if (idx >= num_counters)
+ 		return NULL;
+-	counters = fixed ? pmu->fixed_counters : pmu->gp_counters;
+-
+-	return &counters[idx];
++	return &counters[array_index_nospec(idx, num_counters)];
+ }
+ 
+ static bool intel_is_valid_msr(struct kvm_vcpu *vcpu, u32 msr)
+diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
+index 9344ac6b4f99..6c2b45f5d501 100644
+--- a/arch/x86/kvm/vmx.c
++++ b/arch/x86/kvm/vmx.c
+@@ -7261,8 +7261,10 @@ static int handle_vmread(struct kvm_vcpu *vcpu)
+ 		/* _system ok, as nested_vmx_check_permission verified cpl=0 */
+ 		if (kvm_write_guest_virt_system(vcpu, gva, &field_value,
+ 						(is_long_mode(vcpu) ? 8 : 4),
+-						&e))
++						&e)) {
+ 			kvm_inject_page_fault(vcpu, &e);
++			return 1;
++		}
+ 	}
+ 
+ 	nested_vmx_succeed(vcpu);
+diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
+new file mode 100644
+index 000000000000..3791ce8d269e
+--- /dev/null
++++ b/arch/x86/kvm/vmx/vmx.c
+@@ -0,0 +1,8033 @@
++// SPDX-License-Identifier: GPL-2.0-only
++/*
++ * Kernel-based Virtual Machine driver for Linux
++ *
++ * This module enables machines with Intel VT-x extensions to run virtual
++ * machines without emulation or binary translation.
++ *
++ * Copyright (C) 2006 Qumranet, Inc.
++ * Copyright 2010 Red Hat, Inc. and/or its affiliates.
++ *
++ * Authors:
++ *   Avi Kivity   <avi@××××××××.com>
++ *   Yaniv Kamay  <yaniv@××××××××.com>
++ */
++
++#include <linux/frame.h>
++#include <linux/highmem.h>
++#include <linux/hrtimer.h>
++#include <linux/kernel.h>
++#include <linux/kvm_host.h>
++#include <linux/module.h>
++#include <linux/moduleparam.h>
++#include <linux/mod_devicetable.h>
++#include <linux/mm.h>
++#include <linux/sched.h>
++#include <linux/sched/smt.h>
++#include <linux/slab.h>
++#include <linux/tboot.h>
++#include <linux/trace_events.h>
++
++#include <asm/apic.h>
++#include <asm/asm.h>
++#include <asm/cpu.h>
++#include <asm/debugreg.h>
++#include <asm/desc.h>
++#include <asm/fpu/internal.h>
++#include <asm/io.h>
++#include <asm/irq_remapping.h>
++#include <asm/kexec.h>
++#include <asm/perf_event.h>
++#include <asm/mce.h>
++#include <asm/mmu_context.h>
++#include <asm/mshyperv.h>
++#include <asm/spec-ctrl.h>
++#include <asm/virtext.h>
++#include <asm/vmx.h>
++
++#include "capabilities.h"
++#include "cpuid.h"
++#include "evmcs.h"
++#include "irq.h"
++#include "kvm_cache_regs.h"
++#include "lapic.h"
++#include "mmu.h"
++#include "nested.h"
++#include "ops.h"
++#include "pmu.h"
++#include "trace.h"
++#include "vmcs.h"
++#include "vmcs12.h"
++#include "vmx.h"
++#include "x86.h"
++
++MODULE_AUTHOR("Qumranet");
++MODULE_LICENSE("GPL");
++
++static const struct x86_cpu_id vmx_cpu_id[] = {
++	X86_FEATURE_MATCH(X86_FEATURE_VMX),
++	{}
++};
++MODULE_DEVICE_TABLE(x86cpu, vmx_cpu_id);
++
++bool __read_mostly enable_vpid = 1;
++module_param_named(vpid, enable_vpid, bool, 0444);
++
++static bool __read_mostly enable_vnmi = 1;
++module_param_named(vnmi, enable_vnmi, bool, S_IRUGO);
++
++bool __read_mostly flexpriority_enabled = 1;
++module_param_named(flexpriority, flexpriority_enabled, bool, S_IRUGO);
++
++bool __read_mostly enable_ept = 1;
++module_param_named(ept, enable_ept, bool, S_IRUGO);
++
++bool __read_mostly enable_unrestricted_guest = 1;
++module_param_named(unrestricted_guest,
++			enable_unrestricted_guest, bool, S_IRUGO);
++
++bool __read_mostly enable_ept_ad_bits = 1;
++module_param_named(eptad, enable_ept_ad_bits, bool, S_IRUGO);
++
++static bool __read_mostly emulate_invalid_guest_state = true;
++module_param(emulate_invalid_guest_state, bool, S_IRUGO);
++
++static bool __read_mostly fasteoi = 1;
++module_param(fasteoi, bool, S_IRUGO);
++
++static bool __read_mostly enable_apicv = 1;
++module_param(enable_apicv, bool, S_IRUGO);
++
++/*
++ * If nested=1, nested virtualization is supported, i.e., guests may use
++ * VMX and be a hypervisor for its own guests. If nested=0, guests may not
++ * use VMX instructions.
++ */
++static bool __read_mostly nested = 1;
++module_param(nested, bool, S_IRUGO);
++
++bool __read_mostly enable_pml = 1;
++module_param_named(pml, enable_pml, bool, S_IRUGO);
++
++static bool __read_mostly dump_invalid_vmcs = 0;
++module_param(dump_invalid_vmcs, bool, 0644);
++
++#define MSR_BITMAP_MODE_X2APIC		1
++#define MSR_BITMAP_MODE_X2APIC_APICV	2
++
++#define KVM_VMX_TSC_MULTIPLIER_MAX     0xffffffffffffffffULL
++
++/* Guest_tsc -> host_tsc conversion requires 64-bit division.  */
++static int __read_mostly cpu_preemption_timer_multi;
++static bool __read_mostly enable_preemption_timer = 1;
++#ifdef CONFIG_X86_64
++module_param_named(preemption_timer, enable_preemption_timer, bool, S_IRUGO);
++#endif
++
++#define KVM_VM_CR0_ALWAYS_OFF (X86_CR0_NW | X86_CR0_CD)
++#define KVM_VM_CR0_ALWAYS_ON_UNRESTRICTED_GUEST X86_CR0_NE
++#define KVM_VM_CR0_ALWAYS_ON				\
++	(KVM_VM_CR0_ALWAYS_ON_UNRESTRICTED_GUEST | 	\
++	 X86_CR0_WP | X86_CR0_PG | X86_CR0_PE)
++#define KVM_CR4_GUEST_OWNED_BITS				      \
++	(X86_CR4_PVI | X86_CR4_DE | X86_CR4_PCE | X86_CR4_OSFXSR      \
++	 | X86_CR4_OSXMMEXCPT | X86_CR4_LA57 | X86_CR4_TSD)
++
++#define KVM_VM_CR4_ALWAYS_ON_UNRESTRICTED_GUEST X86_CR4_VMXE
++#define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE)
++#define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE)
++
++#define RMODE_GUEST_OWNED_EFLAGS_BITS (~(X86_EFLAGS_IOPL | X86_EFLAGS_VM))
++
++#define MSR_IA32_RTIT_STATUS_MASK (~(RTIT_STATUS_FILTEREN | \
++	RTIT_STATUS_CONTEXTEN | RTIT_STATUS_TRIGGEREN | \
++	RTIT_STATUS_ERROR | RTIT_STATUS_STOPPED | \
++	RTIT_STATUS_BYTECNT))
++
++#define MSR_IA32_RTIT_OUTPUT_BASE_MASK \
++	(~((1UL << cpuid_query_maxphyaddr(vcpu)) - 1) | 0x7f)
++
++/*
++ * These 2 parameters are used to config the controls for Pause-Loop Exiting:
++ * ple_gap:    upper bound on the amount of time between two successive
++ *             executions of PAUSE in a loop. Also indicate if ple enabled.
++ *             According to test, this time is usually smaller than 128 cycles.
++ * ple_window: upper bound on the amount of time a guest is allowed to execute
++ *             in a PAUSE loop. Tests indicate that most spinlocks are held for
++ *             less than 2^12 cycles
++ * Time is measured based on a counter that runs at the same rate as the TSC,
++ * refer SDM volume 3b section 21.6.13 & 22.1.3.
++ */
++static unsigned int ple_gap = KVM_DEFAULT_PLE_GAP;
++module_param(ple_gap, uint, 0444);
++
++static unsigned int ple_window = KVM_VMX_DEFAULT_PLE_WINDOW;
++module_param(ple_window, uint, 0444);
++
++/* Default doubles per-vcpu window every exit. */
++static unsigned int ple_window_grow = KVM_DEFAULT_PLE_WINDOW_GROW;
++module_param(ple_window_grow, uint, 0444);
++
++/* Default resets per-vcpu window every exit to ple_window. */
++static unsigned int ple_window_shrink = KVM_DEFAULT_PLE_WINDOW_SHRINK;
++module_param(ple_window_shrink, uint, 0444);
++
++/* Default is to compute the maximum so we can never overflow. */
++static unsigned int ple_window_max        = KVM_VMX_DEFAULT_PLE_WINDOW_MAX;
++module_param(ple_window_max, uint, 0444);
++
++/* Default is SYSTEM mode, 1 for host-guest mode */
++int __read_mostly pt_mode = PT_MODE_SYSTEM;
++module_param(pt_mode, int, S_IRUGO);
++
++static DEFINE_STATIC_KEY_FALSE(vmx_l1d_should_flush);
++static DEFINE_STATIC_KEY_FALSE(vmx_l1d_flush_cond);
++static DEFINE_MUTEX(vmx_l1d_flush_mutex);
++
++/* Storage for pre module init parameter parsing */
++static enum vmx_l1d_flush_state __read_mostly vmentry_l1d_flush_param = VMENTER_L1D_FLUSH_AUTO;
++
++static const struct {
++	const char *option;
++	bool for_parse;
++} vmentry_l1d_param[] = {
++	[VMENTER_L1D_FLUSH_AUTO]	 = {"auto", true},
++	[VMENTER_L1D_FLUSH_NEVER]	 = {"never", true},
++	[VMENTER_L1D_FLUSH_COND]	 = {"cond", true},
++	[VMENTER_L1D_FLUSH_ALWAYS]	 = {"always", true},
++	[VMENTER_L1D_FLUSH_EPT_DISABLED] = {"EPT disabled", false},
++	[VMENTER_L1D_FLUSH_NOT_REQUIRED] = {"not required", false},
++};
++
++#define L1D_CACHE_ORDER 4
++static void *vmx_l1d_flush_pages;
++
++static int vmx_setup_l1d_flush(enum vmx_l1d_flush_state l1tf)
++{
++	struct page *page;
++	unsigned int i;
++
++	if (!boot_cpu_has_bug(X86_BUG_L1TF)) {
++		l1tf_vmx_mitigation = VMENTER_L1D_FLUSH_NOT_REQUIRED;
++		return 0;
++	}
++
++	if (!enable_ept) {
++		l1tf_vmx_mitigation = VMENTER_L1D_FLUSH_EPT_DISABLED;
++		return 0;
++	}
++
++	if (boot_cpu_has(X86_FEATURE_ARCH_CAPABILITIES)) {
++		u64 msr;
++
++		rdmsrl(MSR_IA32_ARCH_CAPABILITIES, msr);
++		if (msr & ARCH_CAP_SKIP_VMENTRY_L1DFLUSH) {
++			l1tf_vmx_mitigation = VMENTER_L1D_FLUSH_NOT_REQUIRED;
++			return 0;
++		}
++	}
++
++	/* If set to auto use the default l1tf mitigation method */
++	if (l1tf == VMENTER_L1D_FLUSH_AUTO) {
++		switch (l1tf_mitigation) {
++		case L1TF_MITIGATION_OFF:
++			l1tf = VMENTER_L1D_FLUSH_NEVER;
++			break;
++		case L1TF_MITIGATION_FLUSH_NOWARN:
++		case L1TF_MITIGATION_FLUSH:
++		case L1TF_MITIGATION_FLUSH_NOSMT:
++			l1tf = VMENTER_L1D_FLUSH_COND;
++			break;
++		case L1TF_MITIGATION_FULL:
++		case L1TF_MITIGATION_FULL_FORCE:
++			l1tf = VMENTER_L1D_FLUSH_ALWAYS;
++			break;
++		}
++	} else if (l1tf_mitigation == L1TF_MITIGATION_FULL_FORCE) {
++		l1tf = VMENTER_L1D_FLUSH_ALWAYS;
++	}
++
++	if (l1tf != VMENTER_L1D_FLUSH_NEVER && !vmx_l1d_flush_pages &&
++	    !boot_cpu_has(X86_FEATURE_FLUSH_L1D)) {
++		/*
++		 * This allocation for vmx_l1d_flush_pages is not tied to a VM
++		 * lifetime and so should not be charged to a memcg.
++		 */
++		page = alloc_pages(GFP_KERNEL, L1D_CACHE_ORDER);
++		if (!page)
++			return -ENOMEM;
++		vmx_l1d_flush_pages = page_address(page);
++
++		/*
++		 * Initialize each page with a different pattern in
++		 * order to protect against KSM in the nested
++		 * virtualization case.
++		 */
++		for (i = 0; i < 1u << L1D_CACHE_ORDER; ++i) {
++			memset(vmx_l1d_flush_pages + i * PAGE_SIZE, i + 1,
++			       PAGE_SIZE);
++		}
++	}
++
++	l1tf_vmx_mitigation = l1tf;
++
++	if (l1tf != VMENTER_L1D_FLUSH_NEVER)
++		static_branch_enable(&vmx_l1d_should_flush);
++	else
++		static_branch_disable(&vmx_l1d_should_flush);
++
++	if (l1tf == VMENTER_L1D_FLUSH_COND)
++		static_branch_enable(&vmx_l1d_flush_cond);
++	else
++		static_branch_disable(&vmx_l1d_flush_cond);
++	return 0;
++}
++
++static int vmentry_l1d_flush_parse(const char *s)
++{
++	unsigned int i;
++
++	if (s) {
++		for (i = 0; i < ARRAY_SIZE(vmentry_l1d_param); i++) {
++			if (vmentry_l1d_param[i].for_parse &&
++			    sysfs_streq(s, vmentry_l1d_param[i].option))
++				return i;
++		}
++	}
++	return -EINVAL;
++}
++
++static int vmentry_l1d_flush_set(const char *s, const struct kernel_param *kp)
++{
++	int l1tf, ret;
++
++	l1tf = vmentry_l1d_flush_parse(s);
++	if (l1tf < 0)
++		return l1tf;
++
++	if (!boot_cpu_has(X86_BUG_L1TF))
++		return 0;
++
++	/*
++	 * Has vmx_init() run already? If not then this is the pre init
++	 * parameter parsing. In that case just store the value and let
++	 * vmx_init() do the proper setup after enable_ept has been
++	 * established.
++	 */
++	if (l1tf_vmx_mitigation == VMENTER_L1D_FLUSH_AUTO) {
++		vmentry_l1d_flush_param = l1tf;
++		return 0;
++	}
++
++	mutex_lock(&vmx_l1d_flush_mutex);
++	ret = vmx_setup_l1d_flush(l1tf);
++	mutex_unlock(&vmx_l1d_flush_mutex);
++	return ret;
++}
++
++static int vmentry_l1d_flush_get(char *s, const struct kernel_param *kp)
++{
++	if (WARN_ON_ONCE(l1tf_vmx_mitigation >= ARRAY_SIZE(vmentry_l1d_param)))
++		return sprintf(s, "???\n");
++
++	return sprintf(s, "%s\n", vmentry_l1d_param[l1tf_vmx_mitigation].option);
++}
++
++static const struct kernel_param_ops vmentry_l1d_flush_ops = {
++	.set = vmentry_l1d_flush_set,
++	.get = vmentry_l1d_flush_get,
++};
++module_param_cb(vmentry_l1d_flush, &vmentry_l1d_flush_ops, NULL, 0644);
++
++static bool guest_state_valid(struct kvm_vcpu *vcpu);
++static u32 vmx_segment_access_rights(struct kvm_segment *var);
++static __always_inline void vmx_disable_intercept_for_msr(unsigned long *msr_bitmap,
++							  u32 msr, int type);
++
++void vmx_vmexit(void);
++
++#define vmx_insn_failed(fmt...)		\
++do {					\
++	WARN_ONCE(1, fmt);		\
++	pr_warn_ratelimited(fmt);	\
++} while (0)
++
++asmlinkage void vmread_error(unsigned long field, bool fault)
++{
++	if (fault)
++		kvm_spurious_fault();
++	else
++		vmx_insn_failed("kvm: vmread failed: field=%lx\n", field);
++}
++
++noinline void vmwrite_error(unsigned long field, unsigned long value)
++{
++	vmx_insn_failed("kvm: vmwrite failed: field=%lx val=%lx err=%d\n",
++			field, value, vmcs_read32(VM_INSTRUCTION_ERROR));
++}
++
++noinline void vmclear_error(struct vmcs *vmcs, u64 phys_addr)
++{
++	vmx_insn_failed("kvm: vmclear failed: %p/%llx\n", vmcs, phys_addr);
++}
++
++noinline void vmptrld_error(struct vmcs *vmcs, u64 phys_addr)
++{
++	vmx_insn_failed("kvm: vmptrld failed: %p/%llx\n", vmcs, phys_addr);
++}
++
++noinline void invvpid_error(unsigned long ext, u16 vpid, gva_t gva)
++{
++	vmx_insn_failed("kvm: invvpid failed: ext=0x%lx vpid=%u gva=0x%lx\n",
++			ext, vpid, gva);
++}
++
++noinline void invept_error(unsigned long ext, u64 eptp, gpa_t gpa)
++{
++	vmx_insn_failed("kvm: invept failed: ext=0x%lx eptp=%llx gpa=0x%llx\n",
++			ext, eptp, gpa);
++}
++
++static DEFINE_PER_CPU(struct vmcs *, vmxarea);
++DEFINE_PER_CPU(struct vmcs *, current_vmcs);
++/*
++ * We maintain a per-CPU linked-list of VMCS loaded on that CPU. This is needed
++ * when a CPU is brought down, and we need to VMCLEAR all VMCSs loaded on it.
++ */
++static DEFINE_PER_CPU(struct list_head, loaded_vmcss_on_cpu);
++
++/*
++ * We maintian a per-CPU linked-list of vCPU, so in wakeup_handler() we
++ * can find which vCPU should be waken up.
++ */
++static DEFINE_PER_CPU(struct list_head, blocked_vcpu_on_cpu);
++static DEFINE_PER_CPU(spinlock_t, blocked_vcpu_on_cpu_lock);
++
++static DECLARE_BITMAP(vmx_vpid_bitmap, VMX_NR_VPIDS);
++static DEFINE_SPINLOCK(vmx_vpid_lock);
++
++struct vmcs_config vmcs_config;
++struct vmx_capability vmx_capability;
++
++#define VMX_SEGMENT_FIELD(seg)					\
++	[VCPU_SREG_##seg] = {                                   \
++		.selector = GUEST_##seg##_SELECTOR,		\
++		.base = GUEST_##seg##_BASE,		   	\
++		.limit = GUEST_##seg##_LIMIT,		   	\
++		.ar_bytes = GUEST_##seg##_AR_BYTES,	   	\
++	}
++
++static const struct kvm_vmx_segment_field {
++	unsigned selector;
++	unsigned base;
++	unsigned limit;
++	unsigned ar_bytes;
++} kvm_vmx_segment_fields[] = {
++	VMX_SEGMENT_FIELD(CS),
++	VMX_SEGMENT_FIELD(DS),
++	VMX_SEGMENT_FIELD(ES),
++	VMX_SEGMENT_FIELD(FS),
++	VMX_SEGMENT_FIELD(GS),
++	VMX_SEGMENT_FIELD(SS),
++	VMX_SEGMENT_FIELD(TR),
++	VMX_SEGMENT_FIELD(LDTR),
++};
++
++u64 host_efer;
++static unsigned long host_idt_base;
++
++/*
++ * Though SYSCALL is only supported in 64-bit mode on Intel CPUs, kvm
++ * will emulate SYSCALL in legacy mode if the vendor string in guest
++ * CPUID.0:{EBX,ECX,EDX} is "AuthenticAMD" or "AMDisbetter!" To
++ * support this emulation, IA32_STAR must always be included in
++ * vmx_msr_index[], even in i386 builds.
++ */
++const u32 vmx_msr_index[] = {
++#ifdef CONFIG_X86_64
++	MSR_SYSCALL_MASK, MSR_LSTAR, MSR_CSTAR,
++#endif
++	MSR_EFER, MSR_TSC_AUX, MSR_STAR,
++	MSR_IA32_TSX_CTRL,
++};
++
++#if IS_ENABLED(CONFIG_HYPERV)
++static bool __read_mostly enlightened_vmcs = true;
++module_param(enlightened_vmcs, bool, 0444);
++
++/* check_ept_pointer() should be under protection of ept_pointer_lock. */
++static void check_ept_pointer_match(struct kvm *kvm)
++{
++	struct kvm_vcpu *vcpu;
++	u64 tmp_eptp = INVALID_PAGE;
++	int i;
++
++	kvm_for_each_vcpu(i, vcpu, kvm) {
++		if (!VALID_PAGE(tmp_eptp)) {
++			tmp_eptp = to_vmx(vcpu)->ept_pointer;
++		} else if (tmp_eptp != to_vmx(vcpu)->ept_pointer) {
++			to_kvm_vmx(kvm)->ept_pointers_match
++				= EPT_POINTERS_MISMATCH;
++			return;
++		}
++	}
++
++	to_kvm_vmx(kvm)->ept_pointers_match = EPT_POINTERS_MATCH;
++}
++
++static int kvm_fill_hv_flush_list_func(struct hv_guest_mapping_flush_list *flush,
++		void *data)
++{
++	struct kvm_tlb_range *range = data;
++
++	return hyperv_fill_flush_guest_mapping_list(flush, range->start_gfn,
++			range->pages);
++}
++
++static inline int __hv_remote_flush_tlb_with_range(struct kvm *kvm,
++		struct kvm_vcpu *vcpu, struct kvm_tlb_range *range)
++{
++	u64 ept_pointer = to_vmx(vcpu)->ept_pointer;
++
++	/*
++	 * FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE hypercall needs address
++	 * of the base of EPT PML4 table, strip off EPT configuration
++	 * information.
++	 */
++	if (range)
++		return hyperv_flush_guest_mapping_range(ept_pointer & PAGE_MASK,
++				kvm_fill_hv_flush_list_func, (void *)range);
++	else
++		return hyperv_flush_guest_mapping(ept_pointer & PAGE_MASK);
++}
++
++static int hv_remote_flush_tlb_with_range(struct kvm *kvm,
++		struct kvm_tlb_range *range)
++{
++	struct kvm_vcpu *vcpu;
++	int ret = 0, i;
++
++	spin_lock(&to_kvm_vmx(kvm)->ept_pointer_lock);
++
++	if (to_kvm_vmx(kvm)->ept_pointers_match == EPT_POINTERS_CHECK)
++		check_ept_pointer_match(kvm);
++
++	if (to_kvm_vmx(kvm)->ept_pointers_match != EPT_POINTERS_MATCH) {
++		kvm_for_each_vcpu(i, vcpu, kvm) {
++			/* If ept_pointer is invalid pointer, bypass flush request. */
++			if (VALID_PAGE(to_vmx(vcpu)->ept_pointer))
++				ret |= __hv_remote_flush_tlb_with_range(
++					kvm, vcpu, range);
++		}
++	} else {
++		ret = __hv_remote_flush_tlb_with_range(kvm,
++				kvm_get_vcpu(kvm, 0), range);
++	}
++
++	spin_unlock(&to_kvm_vmx(kvm)->ept_pointer_lock);
++	return ret;
++}
++static int hv_remote_flush_tlb(struct kvm *kvm)
++{
++	return hv_remote_flush_tlb_with_range(kvm, NULL);
++}
++
++static int hv_enable_direct_tlbflush(struct kvm_vcpu *vcpu)
++{
++	struct hv_enlightened_vmcs *evmcs;
++	struct hv_partition_assist_pg **p_hv_pa_pg =
++			&vcpu->kvm->arch.hyperv.hv_pa_pg;
++	/*
++	 * Synthetic VM-Exit is not enabled in current code and so All
++	 * evmcs in singe VM shares same assist page.
++	 */
++	if (!*p_hv_pa_pg)
++		*p_hv_pa_pg = kzalloc(PAGE_SIZE, GFP_KERNEL);
++
++	if (!*p_hv_pa_pg)
++		return -ENOMEM;
++
++	evmcs = (struct hv_enlightened_vmcs *)to_vmx(vcpu)->loaded_vmcs->vmcs;
++
++	evmcs->partition_assist_page =
++		__pa(*p_hv_pa_pg);
++	evmcs->hv_vm_id = (unsigned long)vcpu->kvm;
++	evmcs->hv_enlightenments_control.nested_flush_hypercall = 1;
++
++	return 0;
++}
++
++#endif /* IS_ENABLED(CONFIG_HYPERV) */
++
++/*
++ * Comment's format: document - errata name - stepping - processor name.
++ * Refer from
++ * https://www.virtualbox.org/svn/vbox/trunk/src/VBox/VMM/VMMR0/HMR0.cpp
++ */
++static u32 vmx_preemption_cpu_tfms[] = {
++/* 323344.pdf - BA86   - D0 - Xeon 7500 Series */
++0x000206E6,
++/* 323056.pdf - AAX65  - C2 - Xeon L3406 */
++/* 322814.pdf - AAT59  - C2 - i7-600, i5-500, i5-400 and i3-300 Mobile */
++/* 322911.pdf - AAU65  - C2 - i5-600, i3-500 Desktop and Pentium G6950 */
++0x00020652,
++/* 322911.pdf - AAU65  - K0 - i5-600, i3-500 Desktop and Pentium G6950 */
++0x00020655,
++/* 322373.pdf - AAO95  - B1 - Xeon 3400 Series */
++/* 322166.pdf - AAN92  - B1 - i7-800 and i5-700 Desktop */
++/*
++ * 320767.pdf - AAP86  - B1 -
++ * i7-900 Mobile Extreme, i7-800 and i7-700 Mobile
++ */
++0x000106E5,
++/* 321333.pdf - AAM126 - C0 - Xeon 3500 */
++0x000106A0,
++/* 321333.pdf - AAM126 - C1 - Xeon 3500 */
++0x000106A1,
++/* 320836.pdf - AAJ124 - C0 - i7-900 Desktop Extreme and i7-900 Desktop */
++0x000106A4,
++ /* 321333.pdf - AAM126 - D0 - Xeon 3500 */
++ /* 321324.pdf - AAK139 - D0 - Xeon 5500 */
++ /* 320836.pdf - AAJ124 - D0 - i7-900 Extreme and i7-900 Desktop */
++0x000106A5,
++ /* Xeon E3-1220 V2 */
++0x000306A8,
++};
++
++static inline bool cpu_has_broken_vmx_preemption_timer(void)
++{
++	u32 eax = cpuid_eax(0x00000001), i;
++
++	/* Clear the reserved bits */
++	eax &= ~(0x3U << 14 | 0xfU << 28);
++	for (i = 0; i < ARRAY_SIZE(vmx_preemption_cpu_tfms); i++)
++		if (eax == vmx_preemption_cpu_tfms[i])
++			return true;
++
++	return false;
++}
++
++static inline bool cpu_need_virtualize_apic_accesses(struct kvm_vcpu *vcpu)
++{
++	return flexpriority_enabled && lapic_in_kernel(vcpu);
++}
++
++static inline bool report_flexpriority(void)
++{
++	return flexpriority_enabled;
++}
++
++static inline int __find_msr_index(struct vcpu_vmx *vmx, u32 msr)
++{
++	int i;
++
++	for (i = 0; i < vmx->nmsrs; ++i)
++		if (vmx_msr_index[vmx->guest_msrs[i].index] == msr)
++			return i;
++	return -1;
++}
++
++struct shared_msr_entry *find_msr_entry(struct vcpu_vmx *vmx, u32 msr)
++{
++	int i;
++
++	i = __find_msr_index(vmx, msr);
++	if (i >= 0)
++		return &vmx->guest_msrs[i];
++	return NULL;
++}
++
++static int vmx_set_guest_msr(struct vcpu_vmx *vmx, struct shared_msr_entry *msr, u64 data)
++{
++	int ret = 0;
++
++	u64 old_msr_data = msr->data;
++	msr->data = data;
++	if (msr - vmx->guest_msrs < vmx->save_nmsrs) {
++		preempt_disable();
++		ret = kvm_set_shared_msr(msr->index, msr->data,
++					 msr->mask);
++		preempt_enable();
++		if (ret)
++			msr->data = old_msr_data;
++	}
++	return ret;
++}
++
++void loaded_vmcs_init(struct loaded_vmcs *loaded_vmcs)
++{
++	vmcs_clear(loaded_vmcs->vmcs);
++	if (loaded_vmcs->shadow_vmcs && loaded_vmcs->launched)
++		vmcs_clear(loaded_vmcs->shadow_vmcs);
++	loaded_vmcs->cpu = -1;
++	loaded_vmcs->launched = 0;
++}
++
++#ifdef CONFIG_KEXEC_CORE
++/*
++ * This bitmap is used to indicate whether the vmclear
++ * operation is enabled on all cpus. All disabled by
++ * default.
++ */
++static cpumask_t crash_vmclear_enabled_bitmap = CPU_MASK_NONE;
++
++static inline void crash_enable_local_vmclear(int cpu)
++{
++	cpumask_set_cpu(cpu, &crash_vmclear_enabled_bitmap);
++}
++
++static inline void crash_disable_local_vmclear(int cpu)
++{
++	cpumask_clear_cpu(cpu, &crash_vmclear_enabled_bitmap);
++}
++
++static inline int crash_local_vmclear_enabled(int cpu)
++{
++	return cpumask_test_cpu(cpu, &crash_vmclear_enabled_bitmap);
++}
++
++static void crash_vmclear_local_loaded_vmcss(void)
++{
++	int cpu = raw_smp_processor_id();
++	struct loaded_vmcs *v;
++
++	if (!crash_local_vmclear_enabled(cpu))
++		return;
++
++	list_for_each_entry(v, &per_cpu(loaded_vmcss_on_cpu, cpu),
++			    loaded_vmcss_on_cpu_link)
++		vmcs_clear(v->vmcs);
++}
++#else
++static inline void crash_enable_local_vmclear(int cpu) { }
++static inline void crash_disable_local_vmclear(int cpu) { }
++#endif /* CONFIG_KEXEC_CORE */
++
++static void __loaded_vmcs_clear(void *arg)
++{
++	struct loaded_vmcs *loaded_vmcs = arg;
++	int cpu = raw_smp_processor_id();
++
++	if (loaded_vmcs->cpu != cpu)
++		return; /* vcpu migration can race with cpu offline */
++	if (per_cpu(current_vmcs, cpu) == loaded_vmcs->vmcs)
++		per_cpu(current_vmcs, cpu) = NULL;
++	crash_disable_local_vmclear(cpu);
++	list_del(&loaded_vmcs->loaded_vmcss_on_cpu_link);
++
++	/*
++	 * we should ensure updating loaded_vmcs->loaded_vmcss_on_cpu_link
++	 * is before setting loaded_vmcs->vcpu to -1 which is done in
++	 * loaded_vmcs_init. Otherwise, other cpu can see vcpu = -1 fist
++	 * then adds the vmcs into percpu list before it is deleted.
++	 */
++	smp_wmb();
++
++	loaded_vmcs_init(loaded_vmcs);
++	crash_enable_local_vmclear(cpu);
++}
++
++void loaded_vmcs_clear(struct loaded_vmcs *loaded_vmcs)
++{
++	int cpu = loaded_vmcs->cpu;
++
++	if (cpu != -1)
++		smp_call_function_single(cpu,
++			 __loaded_vmcs_clear, loaded_vmcs, 1);
++}
++
++static bool vmx_segment_cache_test_set(struct vcpu_vmx *vmx, unsigned seg,
++				       unsigned field)
++{
++	bool ret;
++	u32 mask = 1 << (seg * SEG_FIELD_NR + field);
++
++	if (!kvm_register_is_available(&vmx->vcpu, VCPU_EXREG_SEGMENTS)) {
++		kvm_register_mark_available(&vmx->vcpu, VCPU_EXREG_SEGMENTS);
++		vmx->segment_cache.bitmask = 0;
++	}
++	ret = vmx->segment_cache.bitmask & mask;
++	vmx->segment_cache.bitmask |= mask;
++	return ret;
++}
++
++static u16 vmx_read_guest_seg_selector(struct vcpu_vmx *vmx, unsigned seg)
++{
++	u16 *p = &vmx->segment_cache.seg[seg].selector;
++
++	if (!vmx_segment_cache_test_set(vmx, seg, SEG_FIELD_SEL))
++		*p = vmcs_read16(kvm_vmx_segment_fields[seg].selector);
++	return *p;
++}
++
++static ulong vmx_read_guest_seg_base(struct vcpu_vmx *vmx, unsigned seg)
++{
++	ulong *p = &vmx->segment_cache.seg[seg].base;
++
++	if (!vmx_segment_cache_test_set(vmx, seg, SEG_FIELD_BASE))
++		*p = vmcs_readl(kvm_vmx_segment_fields[seg].base);
++	return *p;
++}
++
++static u32 vmx_read_guest_seg_limit(struct vcpu_vmx *vmx, unsigned seg)
++{
++	u32 *p = &vmx->segment_cache.seg[seg].limit;
++
++	if (!vmx_segment_cache_test_set(vmx, seg, SEG_FIELD_LIMIT))
++		*p = vmcs_read32(kvm_vmx_segment_fields[seg].limit);
++	return *p;
++}
++
++static u32 vmx_read_guest_seg_ar(struct vcpu_vmx *vmx, unsigned seg)
++{
++	u32 *p = &vmx->segment_cache.seg[seg].ar;
++
++	if (!vmx_segment_cache_test_set(vmx, seg, SEG_FIELD_AR))
++		*p = vmcs_read32(kvm_vmx_segment_fields[seg].ar_bytes);
++	return *p;
++}
++
++void update_exception_bitmap(struct kvm_vcpu *vcpu)
++{
++	u32 eb;
++
++	eb = (1u << PF_VECTOR) | (1u << UD_VECTOR) | (1u << MC_VECTOR) |
++	     (1u << DB_VECTOR) | (1u << AC_VECTOR);
++	/*
++	 * Guest access to VMware backdoor ports could legitimately
++	 * trigger #GP because of TSS I/O permission bitmap.
++	 * We intercept those #GP and allow access to them anyway
++	 * as VMware does.
++	 */
++	if (enable_vmware_backdoor)
++		eb |= (1u << GP_VECTOR);
++	if ((vcpu->guest_debug &
++	     (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP)) ==
++	    (KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP))
++		eb |= 1u << BP_VECTOR;
++	if (to_vmx(vcpu)->rmode.vm86_active)
++		eb = ~0;
++	if (enable_ept)
++		eb &= ~(1u << PF_VECTOR); /* bypass_guest_pf = 0 */
++
++	/* When we are running a nested L2 guest and L1 specified for it a
++	 * certain exception bitmap, we must trap the same exceptions and pass
++	 * them to L1. When running L2, we will only handle the exceptions
++	 * specified above if L1 did not want them.
++	 */
++	if (is_guest_mode(vcpu))
++		eb |= get_vmcs12(vcpu)->exception_bitmap;
++
++	vmcs_write32(EXCEPTION_BITMAP, eb);
++}
++
++/*
++ * Check if MSR is intercepted for currently loaded MSR bitmap.
++ */
++static bool msr_write_intercepted(struct kvm_vcpu *vcpu, u32 msr)
++{
++	unsigned long *msr_bitmap;
++	int f = sizeof(unsigned long);
++
++	if (!cpu_has_vmx_msr_bitmap())
++		return true;
++
++	msr_bitmap = to_vmx(vcpu)->loaded_vmcs->msr_bitmap;
++
++	if (msr <= 0x1fff) {
++		return !!test_bit(msr, msr_bitmap + 0x800 / f);
++	} else if ((msr >= 0xc0000000) && (msr <= 0xc0001fff)) {
++		msr &= 0x1fff;
++		return !!test_bit(msr, msr_bitmap + 0xc00 / f);
++	}
++
++	return true;
++}
++
++static void clear_atomic_switch_msr_special(struct vcpu_vmx *vmx,
++		unsigned long entry, unsigned long exit)
++{
++	vm_entry_controls_clearbit(vmx, entry);
++	vm_exit_controls_clearbit(vmx, exit);
++}
++
++int vmx_find_msr_index(struct vmx_msrs *m, u32 msr)
++{
++	unsigned int i;
++
++	for (i = 0; i < m->nr; ++i) {
++		if (m->val[i].index == msr)
++			return i;
++	}
++	return -ENOENT;
++}
++
++static void clear_atomic_switch_msr(struct vcpu_vmx *vmx, unsigned msr)
++{
++	int i;
++	struct msr_autoload *m = &vmx->msr_autoload;
++
++	switch (msr) {
++	case MSR_EFER:
++		if (cpu_has_load_ia32_efer()) {
++			clear_atomic_switch_msr_special(vmx,
++					VM_ENTRY_LOAD_IA32_EFER,
++					VM_EXIT_LOAD_IA32_EFER);
++			return;
++		}
++		break;
++	case MSR_CORE_PERF_GLOBAL_CTRL:
++		if (cpu_has_load_perf_global_ctrl()) {
++			clear_atomic_switch_msr_special(vmx,
++					VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL,
++					VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL);
++			return;
++		}
++		break;
++	}
++	i = vmx_find_msr_index(&m->guest, msr);
++	if (i < 0)
++		goto skip_guest;
++	--m->guest.nr;
++	m->guest.val[i] = m->guest.val[m->guest.nr];
++	vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, m->guest.nr);
++
++skip_guest:
++	i = vmx_find_msr_index(&m->host, msr);
++	if (i < 0)
++		return;
++
++	--m->host.nr;
++	m->host.val[i] = m->host.val[m->host.nr];
++	vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, m->host.nr);
++}
++
++static void add_atomic_switch_msr_special(struct vcpu_vmx *vmx,
++		unsigned long entry, unsigned long exit,
++		unsigned long guest_val_vmcs, unsigned long host_val_vmcs,
++		u64 guest_val, u64 host_val)
++{
++	vmcs_write64(guest_val_vmcs, guest_val);
++	if (host_val_vmcs != HOST_IA32_EFER)
++		vmcs_write64(host_val_vmcs, host_val);
++	vm_entry_controls_setbit(vmx, entry);
++	vm_exit_controls_setbit(vmx, exit);
++}
++
++static void add_atomic_switch_msr(struct vcpu_vmx *vmx, unsigned msr,
++				  u64 guest_val, u64 host_val, bool entry_only)
++{
++	int i, j = 0;
++	struct msr_autoload *m = &vmx->msr_autoload;
++
++	switch (msr) {
++	case MSR_EFER:
++		if (cpu_has_load_ia32_efer()) {
++			add_atomic_switch_msr_special(vmx,
++					VM_ENTRY_LOAD_IA32_EFER,
++					VM_EXIT_LOAD_IA32_EFER,
++					GUEST_IA32_EFER,
++					HOST_IA32_EFER,
++					guest_val, host_val);
++			return;
++		}
++		break;
++	case MSR_CORE_PERF_GLOBAL_CTRL:
++		if (cpu_has_load_perf_global_ctrl()) {
++			add_atomic_switch_msr_special(vmx,
++					VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL,
++					VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL,
++					GUEST_IA32_PERF_GLOBAL_CTRL,
++					HOST_IA32_PERF_GLOBAL_CTRL,
++					guest_val, host_val);
++			return;
++		}
++		break;
++	case MSR_IA32_PEBS_ENABLE:
++		/* PEBS needs a quiescent period after being disabled (to write
++		 * a record).  Disabling PEBS through VMX MSR swapping doesn't
++		 * provide that period, so a CPU could write host's record into
++		 * guest's memory.
++		 */
++		wrmsrl(MSR_IA32_PEBS_ENABLE, 0);
++	}
++
++	i = vmx_find_msr_index(&m->guest, msr);
++	if (!entry_only)
++		j = vmx_find_msr_index(&m->host, msr);
++
++	if ((i < 0 && m->guest.nr == NR_LOADSTORE_MSRS) ||
++		(j < 0 &&  m->host.nr == NR_LOADSTORE_MSRS)) {
++		printk_once(KERN_WARNING "Not enough msr switch entries. "
++				"Can't add msr %x\n", msr);
++		return;
++	}
++	if (i < 0) {
++		i = m->guest.nr++;
++		vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, m->guest.nr);
++	}
++	m->guest.val[i].index = msr;
++	m->guest.val[i].value = guest_val;
++
++	if (entry_only)
++		return;
++
++	if (j < 0) {
++		j = m->host.nr++;
++		vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, m->host.nr);
++	}
++	m->host.val[j].index = msr;
++	m->host.val[j].value = host_val;
++}
++
++static bool update_transition_efer(struct vcpu_vmx *vmx, int efer_offset)
++{
++	u64 guest_efer = vmx->vcpu.arch.efer;
++	u64 ignore_bits = 0;
++
++	/* Shadow paging assumes NX to be available.  */
++	if (!enable_ept)
++		guest_efer |= EFER_NX;
++
++	/*
++	 * LMA and LME handled by hardware; SCE meaningless outside long mode.
++	 */
++	ignore_bits |= EFER_SCE;
++#ifdef CONFIG_X86_64
++	ignore_bits |= EFER_LMA | EFER_LME;
++	/* SCE is meaningful only in long mode on Intel */
++	if (guest_efer & EFER_LMA)
++		ignore_bits &= ~(u64)EFER_SCE;
++#endif
++
++	/*
++	 * On EPT, we can't emulate NX, so we must switch EFER atomically.
++	 * On CPUs that support "load IA32_EFER", always switch EFER
++	 * atomically, since it's faster than switching it manually.
++	 */
++	if (cpu_has_load_ia32_efer() ||
++	    (enable_ept && ((vmx->vcpu.arch.efer ^ host_efer) & EFER_NX))) {
++		if (!(guest_efer & EFER_LMA))
++			guest_efer &= ~EFER_LME;
++		if (guest_efer != host_efer)
++			add_atomic_switch_msr(vmx, MSR_EFER,
++					      guest_efer, host_efer, false);
++		else
++			clear_atomic_switch_msr(vmx, MSR_EFER);
++		return false;
++	} else {
++		clear_atomic_switch_msr(vmx, MSR_EFER);
++
++		guest_efer &= ~ignore_bits;
++		guest_efer |= host_efer & ignore_bits;
++
++		vmx->guest_msrs[efer_offset].data = guest_efer;
++		vmx->guest_msrs[efer_offset].mask = ~ignore_bits;
++
++		return true;
++	}
++}
++
++#ifdef CONFIG_X86_32
++/*
++ * On 32-bit kernels, VM exits still load the FS and GS bases from the
++ * VMCS rather than the segment table.  KVM uses this helper to figure
++ * out the current bases to poke them into the VMCS before entry.
++ */
++static unsigned long segment_base(u16 selector)
++{
++	struct desc_struct *table;
++	unsigned long v;
++
++	if (!(selector & ~SEGMENT_RPL_MASK))
++		return 0;
++
++	table = get_current_gdt_ro();
++
++	if ((selector & SEGMENT_TI_MASK) == SEGMENT_LDT) {
++		u16 ldt_selector = kvm_read_ldt();
++
++		if (!(ldt_selector & ~SEGMENT_RPL_MASK))
++			return 0;
++
++		table = (struct desc_struct *)segment_base(ldt_selector);
++	}
++	v = get_desc_base(&table[selector >> 3]);
++	return v;
++}
++#endif
++
++static inline void pt_load_msr(struct pt_ctx *ctx, u32 addr_range)
++{
++	u32 i;
++
++	wrmsrl(MSR_IA32_RTIT_STATUS, ctx->status);
++	wrmsrl(MSR_IA32_RTIT_OUTPUT_BASE, ctx->output_base);
++	wrmsrl(MSR_IA32_RTIT_OUTPUT_MASK, ctx->output_mask);
++	wrmsrl(MSR_IA32_RTIT_CR3_MATCH, ctx->cr3_match);
++	for (i = 0; i < addr_range; i++) {
++		wrmsrl(MSR_IA32_RTIT_ADDR0_A + i * 2, ctx->addr_a[i]);
++		wrmsrl(MSR_IA32_RTIT_ADDR0_B + i * 2, ctx->addr_b[i]);
++	}
++}
++
++static inline void pt_save_msr(struct pt_ctx *ctx, u32 addr_range)
++{
++	u32 i;
++
++	rdmsrl(MSR_IA32_RTIT_STATUS, ctx->status);
++	rdmsrl(MSR_IA32_RTIT_OUTPUT_BASE, ctx->output_base);
++	rdmsrl(MSR_IA32_RTIT_OUTPUT_MASK, ctx->output_mask);
++	rdmsrl(MSR_IA32_RTIT_CR3_MATCH, ctx->cr3_match);
++	for (i = 0; i < addr_range; i++) {
++		rdmsrl(MSR_IA32_RTIT_ADDR0_A + i * 2, ctx->addr_a[i]);
++		rdmsrl(MSR_IA32_RTIT_ADDR0_B + i * 2, ctx->addr_b[i]);
++	}
++}
++
++static void pt_guest_enter(struct vcpu_vmx *vmx)
++{
++	if (pt_mode == PT_MODE_SYSTEM)
++		return;
++
++	/*
++	 * GUEST_IA32_RTIT_CTL is already set in the VMCS.
++	 * Save host state before VM entry.
++	 */
++	rdmsrl(MSR_IA32_RTIT_CTL, vmx->pt_desc.host.ctl);
++	if (vmx->pt_desc.guest.ctl & RTIT_CTL_TRACEEN) {
++		wrmsrl(MSR_IA32_RTIT_CTL, 0);
++		pt_save_msr(&vmx->pt_desc.host, vmx->pt_desc.addr_range);
++		pt_load_msr(&vmx->pt_desc.guest, vmx->pt_desc.addr_range);
++	}
++}
++
++static void pt_guest_exit(struct vcpu_vmx *vmx)
++{
++	if (pt_mode == PT_MODE_SYSTEM)
++		return;
++
++	if (vmx->pt_desc.guest.ctl & RTIT_CTL_TRACEEN) {
++		pt_save_msr(&vmx->pt_desc.guest, vmx->pt_desc.addr_range);
++		pt_load_msr(&vmx->pt_desc.host, vmx->pt_desc.addr_range);
++	}
++
++	/* Reload host state (IA32_RTIT_CTL will be cleared on VM exit). */
++	wrmsrl(MSR_IA32_RTIT_CTL, vmx->pt_desc.host.ctl);
++}
++
++void vmx_set_host_fs_gs(struct vmcs_host_state *host, u16 fs_sel, u16 gs_sel,
++			unsigned long fs_base, unsigned long gs_base)
++{
++	if (unlikely(fs_sel != host->fs_sel)) {
++		if (!(fs_sel & 7))
++			vmcs_write16(HOST_FS_SELECTOR, fs_sel);
++		else
++			vmcs_write16(HOST_FS_SELECTOR, 0);
++		host->fs_sel = fs_sel;
++	}
++	if (unlikely(gs_sel != host->gs_sel)) {
++		if (!(gs_sel & 7))
++			vmcs_write16(HOST_GS_SELECTOR, gs_sel);
++		else
++			vmcs_write16(HOST_GS_SELECTOR, 0);
++		host->gs_sel = gs_sel;
++	}
++	if (unlikely(fs_base != host->fs_base)) {
++		vmcs_writel(HOST_FS_BASE, fs_base);
++		host->fs_base = fs_base;
++	}
++	if (unlikely(gs_base != host->gs_base)) {
++		vmcs_writel(HOST_GS_BASE, gs_base);
++		host->gs_base = gs_base;
++	}
++}
++
++void vmx_prepare_switch_to_guest(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	struct vmcs_host_state *host_state;
++#ifdef CONFIG_X86_64
++	int cpu = raw_smp_processor_id();
++#endif
++	unsigned long fs_base, gs_base;
++	u16 fs_sel, gs_sel;
++	int i;
++
++	vmx->req_immediate_exit = false;
++
++	/*
++	 * Note that guest MSRs to be saved/restored can also be changed
++	 * when guest state is loaded. This happens when guest transitions
++	 * to/from long-mode by setting MSR_EFER.LMA.
++	 */
++	if (!vmx->guest_msrs_ready) {
++		vmx->guest_msrs_ready = true;
++		for (i = 0; i < vmx->save_nmsrs; ++i)
++			kvm_set_shared_msr(vmx->guest_msrs[i].index,
++					   vmx->guest_msrs[i].data,
++					   vmx->guest_msrs[i].mask);
++
++	}
++	if (vmx->guest_state_loaded)
++		return;
++
++	host_state = &vmx->loaded_vmcs->host_state;
++
++	/*
++	 * Set host fs and gs selectors.  Unfortunately, 22.2.3 does not
++	 * allow segment selectors with cpl > 0 or ti == 1.
++	 */
++	host_state->ldt_sel = kvm_read_ldt();
++
++#ifdef CONFIG_X86_64
++	savesegment(ds, host_state->ds_sel);
++	savesegment(es, host_state->es_sel);
++
++	gs_base = cpu_kernelmode_gs_base(cpu);
++	if (likely(is_64bit_mm(current->mm))) {
++		save_fsgs_for_kvm();
++		fs_sel = current->thread.fsindex;
++		gs_sel = current->thread.gsindex;
++		fs_base = current->thread.fsbase;
++		vmx->msr_host_kernel_gs_base = current->thread.gsbase;
++	} else {
++		savesegment(fs, fs_sel);
++		savesegment(gs, gs_sel);
++		fs_base = read_msr(MSR_FS_BASE);
++		vmx->msr_host_kernel_gs_base = read_msr(MSR_KERNEL_GS_BASE);
++	}
++
++	wrmsrl(MSR_KERNEL_GS_BASE, vmx->msr_guest_kernel_gs_base);
++#else
++	savesegment(fs, fs_sel);
++	savesegment(gs, gs_sel);
++	fs_base = segment_base(fs_sel);
++	gs_base = segment_base(gs_sel);
++#endif
++
++	vmx_set_host_fs_gs(host_state, fs_sel, gs_sel, fs_base, gs_base);
++	vmx->guest_state_loaded = true;
++}
++
++static void vmx_prepare_switch_to_host(struct vcpu_vmx *vmx)
++{
++	struct vmcs_host_state *host_state;
++
++	if (!vmx->guest_state_loaded)
++		return;
++
++	host_state = &vmx->loaded_vmcs->host_state;
++
++	++vmx->vcpu.stat.host_state_reload;
++
++#ifdef CONFIG_X86_64
++	rdmsrl(MSR_KERNEL_GS_BASE, vmx->msr_guest_kernel_gs_base);
++#endif
++	if (host_state->ldt_sel || (host_state->gs_sel & 7)) {
++		kvm_load_ldt(host_state->ldt_sel);
++#ifdef CONFIG_X86_64
++		load_gs_index(host_state->gs_sel);
++#else
++		loadsegment(gs, host_state->gs_sel);
++#endif
++	}
++	if (host_state->fs_sel & 7)
++		loadsegment(fs, host_state->fs_sel);
++#ifdef CONFIG_X86_64
++	if (unlikely(host_state->ds_sel | host_state->es_sel)) {
++		loadsegment(ds, host_state->ds_sel);
++		loadsegment(es, host_state->es_sel);
++	}
++#endif
++	invalidate_tss_limit();
++#ifdef CONFIG_X86_64
++	wrmsrl(MSR_KERNEL_GS_BASE, vmx->msr_host_kernel_gs_base);
++#endif
++	load_fixmap_gdt(raw_smp_processor_id());
++	vmx->guest_state_loaded = false;
++	vmx->guest_msrs_ready = false;
++}
++
++#ifdef CONFIG_X86_64
++static u64 vmx_read_guest_kernel_gs_base(struct vcpu_vmx *vmx)
++{
++	preempt_disable();
++	if (vmx->guest_state_loaded)
++		rdmsrl(MSR_KERNEL_GS_BASE, vmx->msr_guest_kernel_gs_base);
++	preempt_enable();
++	return vmx->msr_guest_kernel_gs_base;
++}
++
++static void vmx_write_guest_kernel_gs_base(struct vcpu_vmx *vmx, u64 data)
++{
++	preempt_disable();
++	if (vmx->guest_state_loaded)
++		wrmsrl(MSR_KERNEL_GS_BASE, data);
++	preempt_enable();
++	vmx->msr_guest_kernel_gs_base = data;
++}
++#endif
++
++static void vmx_vcpu_pi_load(struct kvm_vcpu *vcpu, int cpu)
++{
++	struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
++	struct pi_desc old, new;
++	unsigned int dest;
++
++	/*
++	 * In case of hot-plug or hot-unplug, we may have to undo
++	 * vmx_vcpu_pi_put even if there is no assigned device.  And we
++	 * always keep PI.NDST up to date for simplicity: it makes the
++	 * code easier, and CPU migration is not a fast path.
++	 */
++	if (!pi_test_sn(pi_desc) && vcpu->cpu == cpu)
++		return;
++
++	/*
++	 * If the 'nv' field is POSTED_INTR_WAKEUP_VECTOR, do not change
++	 * PI.NDST: pi_post_block is the one expected to change PID.NDST and the
++	 * wakeup handler expects the vCPU to be on the blocked_vcpu_list that
++	 * matches PI.NDST. Otherwise, a vcpu may not be able to be woken up
++	 * correctly.
++	 */
++	if (pi_desc->nv == POSTED_INTR_WAKEUP_VECTOR || vcpu->cpu == cpu) {
++		pi_clear_sn(pi_desc);
++		goto after_clear_sn;
++	}
++
++	/* The full case.  */
++	do {
++		old.control = new.control = pi_desc->control;
++
++		dest = cpu_physical_id(cpu);
++
++		if (x2apic_enabled())
++			new.ndst = dest;
++		else
++			new.ndst = (dest << 8) & 0xFF00;
++
++		new.sn = 0;
++	} while (cmpxchg64(&pi_desc->control, old.control,
++			   new.control) != old.control);
++
++after_clear_sn:
++
++	/*
++	 * Clear SN before reading the bitmap.  The VT-d firmware
++	 * writes the bitmap and reads SN atomically (5.2.3 in the
++	 * spec), so it doesn't really have a memory barrier that
++	 * pairs with this, but we cannot do that and we need one.
++	 */
++	smp_mb__after_atomic();
++
++	if (!pi_is_pir_empty(pi_desc))
++		pi_set_on(pi_desc);
++}
++
++void vmx_vcpu_load_vmcs(struct kvm_vcpu *vcpu, int cpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	bool already_loaded = vmx->loaded_vmcs->cpu == cpu;
++
++	if (!already_loaded) {
++		loaded_vmcs_clear(vmx->loaded_vmcs);
++		local_irq_disable();
++		crash_disable_local_vmclear(cpu);
++
++		/*
++		 * Read loaded_vmcs->cpu should be before fetching
++		 * loaded_vmcs->loaded_vmcss_on_cpu_link.
++		 * See the comments in __loaded_vmcs_clear().
++		 */
++		smp_rmb();
++
++		list_add(&vmx->loaded_vmcs->loaded_vmcss_on_cpu_link,
++			 &per_cpu(loaded_vmcss_on_cpu, cpu));
++		crash_enable_local_vmclear(cpu);
++		local_irq_enable();
++	}
++
++	if (per_cpu(current_vmcs, cpu) != vmx->loaded_vmcs->vmcs) {
++		per_cpu(current_vmcs, cpu) = vmx->loaded_vmcs->vmcs;
++		vmcs_load(vmx->loaded_vmcs->vmcs);
++		indirect_branch_prediction_barrier();
++	}
++
++	if (!already_loaded) {
++		void *gdt = get_current_gdt_ro();
++		unsigned long sysenter_esp;
++
++		kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
++
++		/*
++		 * Linux uses per-cpu TSS and GDT, so set these when switching
++		 * processors.  See 22.2.4.
++		 */
++		vmcs_writel(HOST_TR_BASE,
++			    (unsigned long)&get_cpu_entry_area(cpu)->tss.x86_tss);
++		vmcs_writel(HOST_GDTR_BASE, (unsigned long)gdt);   /* 22.2.4 */
++
++		rdmsrl(MSR_IA32_SYSENTER_ESP, sysenter_esp);
++		vmcs_writel(HOST_IA32_SYSENTER_ESP, sysenter_esp); /* 22.2.3 */
++
++		vmx->loaded_vmcs->cpu = cpu;
++	}
++
++	/* Setup TSC multiplier */
++	if (kvm_has_tsc_control &&
++	    vmx->current_tsc_ratio != vcpu->arch.tsc_scaling_ratio)
++		decache_tsc_multiplier(vmx);
++}
++
++/*
++ * Switches to specified vcpu, until a matching vcpu_put(), but assumes
++ * vcpu mutex is already taken.
++ */
++void vmx_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++
++	vmx_vcpu_load_vmcs(vcpu, cpu);
++
++	vmx_vcpu_pi_load(vcpu, cpu);
++
++	vmx->host_pkru = read_pkru();
++	vmx->host_debugctlmsr = get_debugctlmsr();
++}
++
++static void vmx_vcpu_pi_put(struct kvm_vcpu *vcpu)
++{
++	struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
++
++	if (!kvm_arch_has_assigned_device(vcpu->kvm) ||
++		!irq_remapping_cap(IRQ_POSTING_CAP)  ||
++		!kvm_vcpu_apicv_active(vcpu))
++		return;
++
++	/* Set SN when the vCPU is preempted */
++	if (vcpu->preempted)
++		pi_set_sn(pi_desc);
++}
++
++static void vmx_vcpu_put(struct kvm_vcpu *vcpu)
++{
++	vmx_vcpu_pi_put(vcpu);
++
++	vmx_prepare_switch_to_host(to_vmx(vcpu));
++}
++
++static bool emulation_required(struct kvm_vcpu *vcpu)
++{
++	return emulate_invalid_guest_state && !guest_state_valid(vcpu);
++}
++
++static void vmx_decache_cr0_guest_bits(struct kvm_vcpu *vcpu);
++
++unsigned long vmx_get_rflags(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	unsigned long rflags, save_rflags;
++
++	if (!kvm_register_is_available(vcpu, VCPU_EXREG_RFLAGS)) {
++		kvm_register_mark_available(vcpu, VCPU_EXREG_RFLAGS);
++		rflags = vmcs_readl(GUEST_RFLAGS);
++		if (vmx->rmode.vm86_active) {
++			rflags &= RMODE_GUEST_OWNED_EFLAGS_BITS;
++			save_rflags = vmx->rmode.save_rflags;
++			rflags |= save_rflags & ~RMODE_GUEST_OWNED_EFLAGS_BITS;
++		}
++		vmx->rflags = rflags;
++	}
++	return vmx->rflags;
++}
++
++void vmx_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	unsigned long old_rflags;
++
++	if (enable_unrestricted_guest) {
++		kvm_register_mark_available(vcpu, VCPU_EXREG_RFLAGS);
++		vmx->rflags = rflags;
++		vmcs_writel(GUEST_RFLAGS, rflags);
++		return;
++	}
++
++	old_rflags = vmx_get_rflags(vcpu);
++	vmx->rflags = rflags;
++	if (vmx->rmode.vm86_active) {
++		vmx->rmode.save_rflags = rflags;
++		rflags |= X86_EFLAGS_IOPL | X86_EFLAGS_VM;
++	}
++	vmcs_writel(GUEST_RFLAGS, rflags);
++
++	if ((old_rflags ^ vmx->rflags) & X86_EFLAGS_VM)
++		vmx->emulation_required = emulation_required(vcpu);
++}
++
++u32 vmx_get_interrupt_shadow(struct kvm_vcpu *vcpu)
++{
++	u32 interruptibility = vmcs_read32(GUEST_INTERRUPTIBILITY_INFO);
++	int ret = 0;
++
++	if (interruptibility & GUEST_INTR_STATE_STI)
++		ret |= KVM_X86_SHADOW_INT_STI;
++	if (interruptibility & GUEST_INTR_STATE_MOV_SS)
++		ret |= KVM_X86_SHADOW_INT_MOV_SS;
++
++	return ret;
++}
++
++void vmx_set_interrupt_shadow(struct kvm_vcpu *vcpu, int mask)
++{
++	u32 interruptibility_old = vmcs_read32(GUEST_INTERRUPTIBILITY_INFO);
++	u32 interruptibility = interruptibility_old;
++
++	interruptibility &= ~(GUEST_INTR_STATE_STI | GUEST_INTR_STATE_MOV_SS);
++
++	if (mask & KVM_X86_SHADOW_INT_MOV_SS)
++		interruptibility |= GUEST_INTR_STATE_MOV_SS;
++	else if (mask & KVM_X86_SHADOW_INT_STI)
++		interruptibility |= GUEST_INTR_STATE_STI;
++
++	if ((interruptibility != interruptibility_old))
++		vmcs_write32(GUEST_INTERRUPTIBILITY_INFO, interruptibility);
++}
++
++static int vmx_rtit_ctl_check(struct kvm_vcpu *vcpu, u64 data)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	unsigned long value;
++
++	/*
++	 * Any MSR write that attempts to change bits marked reserved will
++	 * case a #GP fault.
++	 */
++	if (data & vmx->pt_desc.ctl_bitmask)
++		return 1;
++
++	/*
++	 * Any attempt to modify IA32_RTIT_CTL while TraceEn is set will
++	 * result in a #GP unless the same write also clears TraceEn.
++	 */
++	if ((vmx->pt_desc.guest.ctl & RTIT_CTL_TRACEEN) &&
++		((vmx->pt_desc.guest.ctl ^ data) & ~RTIT_CTL_TRACEEN))
++		return 1;
++
++	/*
++	 * WRMSR to IA32_RTIT_CTL that sets TraceEn but clears this bit
++	 * and FabricEn would cause #GP, if
++	 * CPUID.(EAX=14H, ECX=0):ECX.SNGLRGNOUT[bit 2] = 0
++	 */
++	if ((data & RTIT_CTL_TRACEEN) && !(data & RTIT_CTL_TOPA) &&
++		!(data & RTIT_CTL_FABRIC_EN) &&
++		!intel_pt_validate_cap(vmx->pt_desc.caps,
++					PT_CAP_single_range_output))
++		return 1;
++
++	/*
++	 * MTCFreq, CycThresh and PSBFreq encodings check, any MSR write that
++	 * utilize encodings marked reserved will casue a #GP fault.
++	 */
++	value = intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_mtc_periods);
++	if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_mtc) &&
++			!test_bit((data & RTIT_CTL_MTC_RANGE) >>
++			RTIT_CTL_MTC_RANGE_OFFSET, &value))
++		return 1;
++	value = intel_pt_validate_cap(vmx->pt_desc.caps,
++						PT_CAP_cycle_thresholds);
++	if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_psb_cyc) &&
++			!test_bit((data & RTIT_CTL_CYC_THRESH) >>
++			RTIT_CTL_CYC_THRESH_OFFSET, &value))
++		return 1;
++	value = intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_psb_periods);
++	if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_psb_cyc) &&
++			!test_bit((data & RTIT_CTL_PSB_FREQ) >>
++			RTIT_CTL_PSB_FREQ_OFFSET, &value))
++		return 1;
++
++	/*
++	 * If ADDRx_CFG is reserved or the encodings is >2 will
++	 * cause a #GP fault.
++	 */
++	value = (data & RTIT_CTL_ADDR0) >> RTIT_CTL_ADDR0_OFFSET;
++	if ((value && (vmx->pt_desc.addr_range < 1)) || (value > 2))
++		return 1;
++	value = (data & RTIT_CTL_ADDR1) >> RTIT_CTL_ADDR1_OFFSET;
++	if ((value && (vmx->pt_desc.addr_range < 2)) || (value > 2))
++		return 1;
++	value = (data & RTIT_CTL_ADDR2) >> RTIT_CTL_ADDR2_OFFSET;
++	if ((value && (vmx->pt_desc.addr_range < 3)) || (value > 2))
++		return 1;
++	value = (data & RTIT_CTL_ADDR3) >> RTIT_CTL_ADDR3_OFFSET;
++	if ((value && (vmx->pt_desc.addr_range < 4)) || (value > 2))
++		return 1;
++
++	return 0;
++}
++
++static int skip_emulated_instruction(struct kvm_vcpu *vcpu)
++{
++	unsigned long rip;
++
++	/*
++	 * Using VMCS.VM_EXIT_INSTRUCTION_LEN on EPT misconfig depends on
++	 * undefined behavior: Intel's SDM doesn't mandate the VMCS field be
++	 * set when EPT misconfig occurs.  In practice, real hardware updates
++	 * VM_EXIT_INSTRUCTION_LEN on EPT misconfig, but other hypervisors
++	 * (namely Hyper-V) don't set it due to it being undefined behavior,
++	 * i.e. we end up advancing IP with some random value.
++	 */
++	if (!static_cpu_has(X86_FEATURE_HYPERVISOR) ||
++	    to_vmx(vcpu)->exit_reason != EXIT_REASON_EPT_MISCONFIG) {
++		rip = kvm_rip_read(vcpu);
++		rip += vmcs_read32(VM_EXIT_INSTRUCTION_LEN);
++		kvm_rip_write(vcpu, rip);
++	} else {
++		if (!kvm_emulate_instruction(vcpu, EMULTYPE_SKIP))
++			return 0;
++	}
++
++	/* skipping an emulated instruction also counts */
++	vmx_set_interrupt_shadow(vcpu, 0);
++
++	return 1;
++}
++
++static void vmx_clear_hlt(struct kvm_vcpu *vcpu)
++{
++	/*
++	 * Ensure that we clear the HLT state in the VMCS.  We don't need to
++	 * explicitly skip the instruction because if the HLT state is set,
++	 * then the instruction is already executing and RIP has already been
++	 * advanced.
++	 */
++	if (kvm_hlt_in_guest(vcpu->kvm) &&
++			vmcs_read32(GUEST_ACTIVITY_STATE) == GUEST_ACTIVITY_HLT)
++		vmcs_write32(GUEST_ACTIVITY_STATE, GUEST_ACTIVITY_ACTIVE);
++}
++
++static void vmx_queue_exception(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	unsigned nr = vcpu->arch.exception.nr;
++	bool has_error_code = vcpu->arch.exception.has_error_code;
++	u32 error_code = vcpu->arch.exception.error_code;
++	u32 intr_info = nr | INTR_INFO_VALID_MASK;
++
++	kvm_deliver_exception_payload(vcpu);
++
++	if (has_error_code) {
++		vmcs_write32(VM_ENTRY_EXCEPTION_ERROR_CODE, error_code);
++		intr_info |= INTR_INFO_DELIVER_CODE_MASK;
++	}
++
++	if (vmx->rmode.vm86_active) {
++		int inc_eip = 0;
++		if (kvm_exception_is_soft(nr))
++			inc_eip = vcpu->arch.event_exit_inst_len;
++		kvm_inject_realmode_interrupt(vcpu, nr, inc_eip);
++		return;
++	}
++
++	WARN_ON_ONCE(vmx->emulation_required);
++
++	if (kvm_exception_is_soft(nr)) {
++		vmcs_write32(VM_ENTRY_INSTRUCTION_LEN,
++			     vmx->vcpu.arch.event_exit_inst_len);
++		intr_info |= INTR_TYPE_SOFT_EXCEPTION;
++	} else
++		intr_info |= INTR_TYPE_HARD_EXCEPTION;
++
++	vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, intr_info);
++
++	vmx_clear_hlt(vcpu);
++}
++
++static bool vmx_rdtscp_supported(void)
++{
++	return cpu_has_vmx_rdtscp();
++}
++
++static bool vmx_invpcid_supported(void)
++{
++	return cpu_has_vmx_invpcid();
++}
++
++/*
++ * Swap MSR entry in host/guest MSR entry array.
++ */
++static void move_msr_up(struct vcpu_vmx *vmx, int from, int to)
++{
++	struct shared_msr_entry tmp;
++
++	tmp = vmx->guest_msrs[to];
++	vmx->guest_msrs[to] = vmx->guest_msrs[from];
++	vmx->guest_msrs[from] = tmp;
++}
++
++/*
++ * Set up the vmcs to automatically save and restore system
++ * msrs.  Don't touch the 64-bit msrs if the guest is in legacy
++ * mode, as fiddling with msrs is very expensive.
++ */
++static void setup_msrs(struct vcpu_vmx *vmx)
++{
++	int save_nmsrs, index;
++
++	save_nmsrs = 0;
++#ifdef CONFIG_X86_64
++	/*
++	 * The SYSCALL MSRs are only needed on long mode guests, and only
++	 * when EFER.SCE is set.
++	 */
++	if (is_long_mode(&vmx->vcpu) && (vmx->vcpu.arch.efer & EFER_SCE)) {
++		index = __find_msr_index(vmx, MSR_STAR);
++		if (index >= 0)
++			move_msr_up(vmx, index, save_nmsrs++);
++		index = __find_msr_index(vmx, MSR_LSTAR);
++		if (index >= 0)
++			move_msr_up(vmx, index, save_nmsrs++);
++		index = __find_msr_index(vmx, MSR_SYSCALL_MASK);
++		if (index >= 0)
++			move_msr_up(vmx, index, save_nmsrs++);
++	}
++#endif
++	index = __find_msr_index(vmx, MSR_EFER);
++	if (index >= 0 && update_transition_efer(vmx, index))
++		move_msr_up(vmx, index, save_nmsrs++);
++	index = __find_msr_index(vmx, MSR_TSC_AUX);
++	if (index >= 0 && guest_cpuid_has(&vmx->vcpu, X86_FEATURE_RDTSCP))
++		move_msr_up(vmx, index, save_nmsrs++);
++	index = __find_msr_index(vmx, MSR_IA32_TSX_CTRL);
++	if (index >= 0)
++		move_msr_up(vmx, index, save_nmsrs++);
++
++	vmx->save_nmsrs = save_nmsrs;
++	vmx->guest_msrs_ready = false;
++
++	if (cpu_has_vmx_msr_bitmap())
++		vmx_update_msr_bitmap(&vmx->vcpu);
++}
++
++static u64 vmx_read_l1_tsc_offset(struct kvm_vcpu *vcpu)
++{
++	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
++
++	if (is_guest_mode(vcpu) &&
++	    (vmcs12->cpu_based_vm_exec_control & CPU_BASED_USE_TSC_OFFSETTING))
++		return vcpu->arch.tsc_offset - vmcs12->tsc_offset;
++
++	return vcpu->arch.tsc_offset;
++}
++
++static u64 vmx_write_l1_tsc_offset(struct kvm_vcpu *vcpu, u64 offset)
++{
++	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
++	u64 g_tsc_offset = 0;
++
++	/*
++	 * We're here if L1 chose not to trap WRMSR to TSC. According
++	 * to the spec, this should set L1's TSC; The offset that L1
++	 * set for L2 remains unchanged, and still needs to be added
++	 * to the newly set TSC to get L2's TSC.
++	 */
++	if (is_guest_mode(vcpu) &&
++	    (vmcs12->cpu_based_vm_exec_control & CPU_BASED_USE_TSC_OFFSETTING))
++		g_tsc_offset = vmcs12->tsc_offset;
++
++	trace_kvm_write_tsc_offset(vcpu->vcpu_id,
++				   vcpu->arch.tsc_offset - g_tsc_offset,
++				   offset);
++	vmcs_write64(TSC_OFFSET, offset + g_tsc_offset);
++	return offset + g_tsc_offset;
++}
++
++/*
++ * nested_vmx_allowed() checks whether a guest should be allowed to use VMX
++ * instructions and MSRs (i.e., nested VMX). Nested VMX is disabled for
++ * all guests if the "nested" module option is off, and can also be disabled
++ * for a single guest by disabling its VMX cpuid bit.
++ */
++bool nested_vmx_allowed(struct kvm_vcpu *vcpu)
++{
++	return nested && guest_cpuid_has(vcpu, X86_FEATURE_VMX);
++}
++
++static inline bool vmx_feature_control_msr_valid(struct kvm_vcpu *vcpu,
++						 uint64_t val)
++{
++	uint64_t valid_bits = to_vmx(vcpu)->msr_ia32_feature_control_valid_bits;
++
++	return !(val & ~valid_bits);
++}
++
++static int vmx_get_msr_feature(struct kvm_msr_entry *msr)
++{
++	switch (msr->index) {
++	case MSR_IA32_VMX_BASIC ... MSR_IA32_VMX_VMFUNC:
++		if (!nested)
++			return 1;
++		return vmx_get_vmx_msr(&vmcs_config.nested, msr->index, &msr->data);
++	default:
++		return 1;
++	}
++}
++
++/*
++ * Reads an msr value (of 'msr_index') into 'pdata'.
++ * Returns 0 on success, non-0 otherwise.
++ * Assumes vcpu_load() was already called.
++ */
++static int vmx_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	struct shared_msr_entry *msr;
++	u32 index;
++
++	switch (msr_info->index) {
++#ifdef CONFIG_X86_64
++	case MSR_FS_BASE:
++		msr_info->data = vmcs_readl(GUEST_FS_BASE);
++		break;
++	case MSR_GS_BASE:
++		msr_info->data = vmcs_readl(GUEST_GS_BASE);
++		break;
++	case MSR_KERNEL_GS_BASE:
++		msr_info->data = vmx_read_guest_kernel_gs_base(vmx);
++		break;
++#endif
++	case MSR_EFER:
++		return kvm_get_msr_common(vcpu, msr_info);
++	case MSR_IA32_TSX_CTRL:
++		if (!msr_info->host_initiated &&
++		    !(vcpu->arch.arch_capabilities & ARCH_CAP_TSX_CTRL_MSR))
++			return 1;
++		goto find_shared_msr;
++	case MSR_IA32_UMWAIT_CONTROL:
++		if (!msr_info->host_initiated && !vmx_has_waitpkg(vmx))
++			return 1;
++
++		msr_info->data = vmx->msr_ia32_umwait_control;
++		break;
++	case MSR_IA32_SPEC_CTRL:
++		if (!msr_info->host_initiated &&
++		    !guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL))
++			return 1;
++
++		msr_info->data = to_vmx(vcpu)->spec_ctrl;
++		break;
++	case MSR_IA32_SYSENTER_CS:
++		msr_info->data = vmcs_read32(GUEST_SYSENTER_CS);
++		break;
++	case MSR_IA32_SYSENTER_EIP:
++		msr_info->data = vmcs_readl(GUEST_SYSENTER_EIP);
++		break;
++	case MSR_IA32_SYSENTER_ESP:
++		msr_info->data = vmcs_readl(GUEST_SYSENTER_ESP);
++		break;
++	case MSR_IA32_BNDCFGS:
++		if (!kvm_mpx_supported() ||
++		    (!msr_info->host_initiated &&
++		     !guest_cpuid_has(vcpu, X86_FEATURE_MPX)))
++			return 1;
++		msr_info->data = vmcs_read64(GUEST_BNDCFGS);
++		break;
++	case MSR_IA32_MCG_EXT_CTL:
++		if (!msr_info->host_initiated &&
++		    !(vmx->msr_ia32_feature_control &
++		      FEATURE_CONTROL_LMCE))
++			return 1;
++		msr_info->data = vcpu->arch.mcg_ext_ctl;
++		break;
++	case MSR_IA32_FEATURE_CONTROL:
++		msr_info->data = vmx->msr_ia32_feature_control;
++		break;
++	case MSR_IA32_VMX_BASIC ... MSR_IA32_VMX_VMFUNC:
++		if (!nested_vmx_allowed(vcpu))
++			return 1;
++		return vmx_get_vmx_msr(&vmx->nested.msrs, msr_info->index,
++				       &msr_info->data);
++	case MSR_IA32_RTIT_CTL:
++		if (pt_mode != PT_MODE_HOST_GUEST)
++			return 1;
++		msr_info->data = vmx->pt_desc.guest.ctl;
++		break;
++	case MSR_IA32_RTIT_STATUS:
++		if (pt_mode != PT_MODE_HOST_GUEST)
++			return 1;
++		msr_info->data = vmx->pt_desc.guest.status;
++		break;
++	case MSR_IA32_RTIT_CR3_MATCH:
++		if ((pt_mode != PT_MODE_HOST_GUEST) ||
++			!intel_pt_validate_cap(vmx->pt_desc.caps,
++						PT_CAP_cr3_filtering))
++			return 1;
++		msr_info->data = vmx->pt_desc.guest.cr3_match;
++		break;
++	case MSR_IA32_RTIT_OUTPUT_BASE:
++		if ((pt_mode != PT_MODE_HOST_GUEST) ||
++			(!intel_pt_validate_cap(vmx->pt_desc.caps,
++					PT_CAP_topa_output) &&
++			 !intel_pt_validate_cap(vmx->pt_desc.caps,
++					PT_CAP_single_range_output)))
++			return 1;
++		msr_info->data = vmx->pt_desc.guest.output_base;
++		break;
++	case MSR_IA32_RTIT_OUTPUT_MASK:
++		if ((pt_mode != PT_MODE_HOST_GUEST) ||
++			(!intel_pt_validate_cap(vmx->pt_desc.caps,
++					PT_CAP_topa_output) &&
++			 !intel_pt_validate_cap(vmx->pt_desc.caps,
++					PT_CAP_single_range_output)))
++			return 1;
++		msr_info->data = vmx->pt_desc.guest.output_mask;
++		break;
++	case MSR_IA32_RTIT_ADDR0_A ... MSR_IA32_RTIT_ADDR3_B:
++		index = msr_info->index - MSR_IA32_RTIT_ADDR0_A;
++		if ((pt_mode != PT_MODE_HOST_GUEST) ||
++			(index >= 2 * intel_pt_validate_cap(vmx->pt_desc.caps,
++					PT_CAP_num_address_ranges)))
++			return 1;
++		if (is_noncanonical_address(data, vcpu))
++			return 1;
++		if (index % 2)
++			msr_info->data = vmx->pt_desc.guest.addr_b[index / 2];
++		else
++			msr_info->data = vmx->pt_desc.guest.addr_a[index / 2];
++		break;
++	case MSR_TSC_AUX:
++		if (!msr_info->host_initiated &&
++		    !guest_cpuid_has(vcpu, X86_FEATURE_RDTSCP))
++			return 1;
++		goto find_shared_msr;
++	default:
++	find_shared_msr:
++		msr = find_msr_entry(vmx, msr_info->index);
++		if (msr) {
++			msr_info->data = msr->data;
++			break;
++		}
++		return kvm_get_msr_common(vcpu, msr_info);
++	}
++
++	return 0;
++}
++
++/*
++ * Writes msr value into the appropriate "register".
++ * Returns 0 on success, non-0 otherwise.
++ * Assumes vcpu_load() was already called.
++ */
++static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	struct shared_msr_entry *msr;
++	int ret = 0;
++	u32 msr_index = msr_info->index;
++	u64 data = msr_info->data;
++	u32 index;
++
++	switch (msr_index) {
++	case MSR_EFER:
++		ret = kvm_set_msr_common(vcpu, msr_info);
++		break;
++#ifdef CONFIG_X86_64
++	case MSR_FS_BASE:
++		vmx_segment_cache_clear(vmx);
++		vmcs_writel(GUEST_FS_BASE, data);
++		break;
++	case MSR_GS_BASE:
++		vmx_segment_cache_clear(vmx);
++		vmcs_writel(GUEST_GS_BASE, data);
++		break;
++	case MSR_KERNEL_GS_BASE:
++		vmx_write_guest_kernel_gs_base(vmx, data);
++		break;
++#endif
++	case MSR_IA32_SYSENTER_CS:
++		if (is_guest_mode(vcpu))
++			get_vmcs12(vcpu)->guest_sysenter_cs = data;
++		vmcs_write32(GUEST_SYSENTER_CS, data);
++		break;
++	case MSR_IA32_SYSENTER_EIP:
++		if (is_guest_mode(vcpu))
++			get_vmcs12(vcpu)->guest_sysenter_eip = data;
++		vmcs_writel(GUEST_SYSENTER_EIP, data);
++		break;
++	case MSR_IA32_SYSENTER_ESP:
++		if (is_guest_mode(vcpu))
++			get_vmcs12(vcpu)->guest_sysenter_esp = data;
++		vmcs_writel(GUEST_SYSENTER_ESP, data);
++		break;
++	case MSR_IA32_DEBUGCTLMSR:
++		if (is_guest_mode(vcpu) && get_vmcs12(vcpu)->vm_exit_controls &
++						VM_EXIT_SAVE_DEBUG_CONTROLS)
++			get_vmcs12(vcpu)->guest_ia32_debugctl = data;
++
++		ret = kvm_set_msr_common(vcpu, msr_info);
++		break;
++
++	case MSR_IA32_BNDCFGS:
++		if (!kvm_mpx_supported() ||
++		    (!msr_info->host_initiated &&
++		     !guest_cpuid_has(vcpu, X86_FEATURE_MPX)))
++			return 1;
++		if (is_noncanonical_address(data & PAGE_MASK, vcpu) ||
++		    (data & MSR_IA32_BNDCFGS_RSVD))
++			return 1;
++		vmcs_write64(GUEST_BNDCFGS, data);
++		break;
++	case MSR_IA32_UMWAIT_CONTROL:
++		if (!msr_info->host_initiated && !vmx_has_waitpkg(vmx))
++			return 1;
++
++		/* The reserved bit 1 and non-32 bit [63:32] should be zero */
++		if (data & (BIT_ULL(1) | GENMASK_ULL(63, 32)))
++			return 1;
++
++		vmx->msr_ia32_umwait_control = data;
++		break;
++	case MSR_IA32_SPEC_CTRL:
++		if (!msr_info->host_initiated &&
++		    !guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL))
++			return 1;
++
++		/* The STIBP bit doesn't fault even if it's not advertised */
++		if (data & ~(SPEC_CTRL_IBRS | SPEC_CTRL_STIBP | SPEC_CTRL_SSBD))
++			return 1;
++
++		vmx->spec_ctrl = data;
++
++		if (!data)
++			break;
++
++		/*
++		 * For non-nested:
++		 * When it's written (to non-zero) for the first time, pass
++		 * it through.
++		 *
++		 * For nested:
++		 * The handling of the MSR bitmap for L2 guests is done in
++		 * nested_vmx_prepare_msr_bitmap. We should not touch the
++		 * vmcs02.msr_bitmap here since it gets completely overwritten
++		 * in the merging. We update the vmcs01 here for L1 as well
++		 * since it will end up touching the MSR anyway now.
++		 */
++		vmx_disable_intercept_for_msr(vmx->vmcs01.msr_bitmap,
++					      MSR_IA32_SPEC_CTRL,
++					      MSR_TYPE_RW);
++		break;
++	case MSR_IA32_TSX_CTRL:
++		if (!msr_info->host_initiated &&
++		    !(vcpu->arch.arch_capabilities & ARCH_CAP_TSX_CTRL_MSR))
++			return 1;
++		if (data & ~(TSX_CTRL_RTM_DISABLE | TSX_CTRL_CPUID_CLEAR))
++			return 1;
++		goto find_shared_msr;
++	case MSR_IA32_PRED_CMD:
++		if (!msr_info->host_initiated &&
++		    !guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL))
++			return 1;
++
++		if (data & ~PRED_CMD_IBPB)
++			return 1;
++
++		if (!data)
++			break;
++
++		wrmsrl(MSR_IA32_PRED_CMD, PRED_CMD_IBPB);
++
++		/*
++		 * For non-nested:
++		 * When it's written (to non-zero) for the first time, pass
++		 * it through.
++		 *
++		 * For nested:
++		 * The handling of the MSR bitmap for L2 guests is done in
++		 * nested_vmx_prepare_msr_bitmap. We should not touch the
++		 * vmcs02.msr_bitmap here since it gets completely overwritten
++		 * in the merging.
++		 */
++		vmx_disable_intercept_for_msr(vmx->vmcs01.msr_bitmap, MSR_IA32_PRED_CMD,
++					      MSR_TYPE_W);
++		break;
++	case MSR_IA32_CR_PAT:
++		if (!kvm_pat_valid(data))
++			return 1;
++
++		if (is_guest_mode(vcpu) &&
++		    get_vmcs12(vcpu)->vm_exit_controls & VM_EXIT_SAVE_IA32_PAT)
++			get_vmcs12(vcpu)->guest_ia32_pat = data;
++
++		if (vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_IA32_PAT) {
++			vmcs_write64(GUEST_IA32_PAT, data);
++			vcpu->arch.pat = data;
++			break;
++		}
++		ret = kvm_set_msr_common(vcpu, msr_info);
++		break;
++	case MSR_IA32_TSC_ADJUST:
++		ret = kvm_set_msr_common(vcpu, msr_info);
++		break;
++	case MSR_IA32_MCG_EXT_CTL:
++		if ((!msr_info->host_initiated &&
++		     !(to_vmx(vcpu)->msr_ia32_feature_control &
++		       FEATURE_CONTROL_LMCE)) ||
++		    (data & ~MCG_EXT_CTL_LMCE_EN))
++			return 1;
++		vcpu->arch.mcg_ext_ctl = data;
++		break;
++	case MSR_IA32_FEATURE_CONTROL:
++		if (!vmx_feature_control_msr_valid(vcpu, data) ||
++		    (to_vmx(vcpu)->msr_ia32_feature_control &
++		     FEATURE_CONTROL_LOCKED && !msr_info->host_initiated))
++			return 1;
++		vmx->msr_ia32_feature_control = data;
++		if (msr_info->host_initiated && data == 0)
++			vmx_leave_nested(vcpu);
++		break;
++	case MSR_IA32_VMX_BASIC ... MSR_IA32_VMX_VMFUNC:
++		if (!msr_info->host_initiated)
++			return 1; /* they are read-only */
++		if (!nested_vmx_allowed(vcpu))
++			return 1;
++		return vmx_set_vmx_msr(vcpu, msr_index, data);
++	case MSR_IA32_RTIT_CTL:
++		if ((pt_mode != PT_MODE_HOST_GUEST) ||
++			vmx_rtit_ctl_check(vcpu, data) ||
++			vmx->nested.vmxon)
++			return 1;
++		vmcs_write64(GUEST_IA32_RTIT_CTL, data);
++		vmx->pt_desc.guest.ctl = data;
++		pt_update_intercept_for_msr(vmx);
++		break;
++	case MSR_IA32_RTIT_STATUS:
++		if ((pt_mode != PT_MODE_HOST_GUEST) ||
++			(vmx->pt_desc.guest.ctl & RTIT_CTL_TRACEEN) ||
++			(data & MSR_IA32_RTIT_STATUS_MASK))
++			return 1;
++		vmx->pt_desc.guest.status = data;
++		break;
++	case MSR_IA32_RTIT_CR3_MATCH:
++		if ((pt_mode != PT_MODE_HOST_GUEST) ||
++			(vmx->pt_desc.guest.ctl & RTIT_CTL_TRACEEN) ||
++			!intel_pt_validate_cap(vmx->pt_desc.caps,
++						PT_CAP_cr3_filtering))
++			return 1;
++		vmx->pt_desc.guest.cr3_match = data;
++		break;
++	case MSR_IA32_RTIT_OUTPUT_BASE:
++		if ((pt_mode != PT_MODE_HOST_GUEST) ||
++			(vmx->pt_desc.guest.ctl & RTIT_CTL_TRACEEN) ||
++			(!intel_pt_validate_cap(vmx->pt_desc.caps,
++					PT_CAP_topa_output) &&
++			 !intel_pt_validate_cap(vmx->pt_desc.caps,
++					PT_CAP_single_range_output)) ||
++			(data & MSR_IA32_RTIT_OUTPUT_BASE_MASK))
++			return 1;
++		vmx->pt_desc.guest.output_base = data;
++		break;
++	case MSR_IA32_RTIT_OUTPUT_MASK:
++		if ((pt_mode != PT_MODE_HOST_GUEST) ||
++			(vmx->pt_desc.guest.ctl & RTIT_CTL_TRACEEN) ||
++			(!intel_pt_validate_cap(vmx->pt_desc.caps,
++					PT_CAP_topa_output) &&
++			 !intel_pt_validate_cap(vmx->pt_desc.caps,
++					PT_CAP_single_range_output)))
++			return 1;
++		vmx->pt_desc.guest.output_mask = data;
++		break;
++	case MSR_IA32_RTIT_ADDR0_A ... MSR_IA32_RTIT_ADDR3_B:
++		index = msr_info->index - MSR_IA32_RTIT_ADDR0_A;
++		if ((pt_mode != PT_MODE_HOST_GUEST) ||
++			(vmx->pt_desc.guest.ctl & RTIT_CTL_TRACEEN) ||
++			(index >= 2 * intel_pt_validate_cap(vmx->pt_desc.caps,
++					PT_CAP_num_address_ranges)))
++			return 1;
++		if (is_noncanonical_address(data, vcpu))
++			return 1;
++		if (index % 2)
++			vmx->pt_desc.guest.addr_b[index / 2] = data;
++		else
++			vmx->pt_desc.guest.addr_a[index / 2] = data;
++		break;
++	case MSR_TSC_AUX:
++		if (!msr_info->host_initiated &&
++		    !guest_cpuid_has(vcpu, X86_FEATURE_RDTSCP))
++			return 1;
++		/* Check reserved bit, higher 32 bits should be zero */
++		if ((data >> 32) != 0)
++			return 1;
++		goto find_shared_msr;
++
++	default:
++	find_shared_msr:
++		msr = find_msr_entry(vmx, msr_index);
++		if (msr)
++			ret = vmx_set_guest_msr(vmx, msr, data);
++		else
++			ret = kvm_set_msr_common(vcpu, msr_info);
++	}
++
++	return ret;
++}
++
++static void vmx_cache_reg(struct kvm_vcpu *vcpu, enum kvm_reg reg)
++{
++	kvm_register_mark_available(vcpu, reg);
++
++	switch (reg) {
++	case VCPU_REGS_RSP:
++		vcpu->arch.regs[VCPU_REGS_RSP] = vmcs_readl(GUEST_RSP);
++		break;
++	case VCPU_REGS_RIP:
++		vcpu->arch.regs[VCPU_REGS_RIP] = vmcs_readl(GUEST_RIP);
++		break;
++	case VCPU_EXREG_PDPTR:
++		if (enable_ept)
++			ept_save_pdptrs(vcpu);
++		break;
++	case VCPU_EXREG_CR3:
++		if (enable_unrestricted_guest || (enable_ept && is_paging(vcpu)))
++			vcpu->arch.cr3 = vmcs_readl(GUEST_CR3);
++		break;
++	default:
++		WARN_ON_ONCE(1);
++		break;
++	}
++}
++
++static __init int cpu_has_kvm_support(void)
++{
++	return cpu_has_vmx();
++}
++
++static __init int vmx_disabled_by_bios(void)
++{
++	u64 msr;
++
++	rdmsrl(MSR_IA32_FEATURE_CONTROL, msr);
++	if (msr & FEATURE_CONTROL_LOCKED) {
++		/* launched w/ TXT and VMX disabled */
++		if (!(msr & FEATURE_CONTROL_VMXON_ENABLED_INSIDE_SMX)
++			&& tboot_enabled())
++			return 1;
++		/* launched w/o TXT and VMX only enabled w/ TXT */
++		if (!(msr & FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX)
++			&& (msr & FEATURE_CONTROL_VMXON_ENABLED_INSIDE_SMX)
++			&& !tboot_enabled()) {
++			printk(KERN_WARNING "kvm: disable TXT in the BIOS or "
++				"activate TXT before enabling KVM\n");
++			return 1;
++		}
++		/* launched w/o TXT and VMX disabled */
++		if (!(msr & FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX)
++			&& !tboot_enabled())
++			return 1;
++	}
++
++	return 0;
++}
++
++static void kvm_cpu_vmxon(u64 addr)
++{
++	cr4_set_bits(X86_CR4_VMXE);
++	intel_pt_handle_vmx(1);
++
++	asm volatile ("vmxon %0" : : "m"(addr));
++}
++
++static int hardware_enable(void)
++{
++	int cpu = raw_smp_processor_id();
++	u64 phys_addr = __pa(per_cpu(vmxarea, cpu));
++	u64 old, test_bits;
++
++	if (cr4_read_shadow() & X86_CR4_VMXE)
++		return -EBUSY;
++
++	/*
++	 * This can happen if we hot-added a CPU but failed to allocate
++	 * VP assist page for it.
++	 */
++	if (static_branch_unlikely(&enable_evmcs) &&
++	    !hv_get_vp_assist_page(cpu))
++		return -EFAULT;
++
++	INIT_LIST_HEAD(&per_cpu(loaded_vmcss_on_cpu, cpu));
++	INIT_LIST_HEAD(&per_cpu(blocked_vcpu_on_cpu, cpu));
++	spin_lock_init(&per_cpu(blocked_vcpu_on_cpu_lock, cpu));
++
++	/*
++	 * Now we can enable the vmclear operation in kdump
++	 * since the loaded_vmcss_on_cpu list on this cpu
++	 * has been initialized.
++	 *
++	 * Though the cpu is not in VMX operation now, there
++	 * is no problem to enable the vmclear operation
++	 * for the loaded_vmcss_on_cpu list is empty!
++	 */
++	crash_enable_local_vmclear(cpu);
++
++	rdmsrl(MSR_IA32_FEATURE_CONTROL, old);
++
++	test_bits = FEATURE_CONTROL_LOCKED;
++	test_bits |= FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX;
++	if (tboot_enabled())
++		test_bits |= FEATURE_CONTROL_VMXON_ENABLED_INSIDE_SMX;
++
++	if ((old & test_bits) != test_bits) {
++		/* enable and lock */
++		wrmsrl(MSR_IA32_FEATURE_CONTROL, old | test_bits);
++	}
++	kvm_cpu_vmxon(phys_addr);
++	if (enable_ept)
++		ept_sync_global();
++
++	return 0;
++}
++
++static void vmclear_local_loaded_vmcss(void)
++{
++	int cpu = raw_smp_processor_id();
++	struct loaded_vmcs *v, *n;
++
++	list_for_each_entry_safe(v, n, &per_cpu(loaded_vmcss_on_cpu, cpu),
++				 loaded_vmcss_on_cpu_link)
++		__loaded_vmcs_clear(v);
++}
++
++
++/* Just like cpu_vmxoff(), but with the __kvm_handle_fault_on_reboot()
++ * tricks.
++ */
++static void kvm_cpu_vmxoff(void)
++{
++	asm volatile (__ex("vmxoff"));
++
++	intel_pt_handle_vmx(0);
++	cr4_clear_bits(X86_CR4_VMXE);
++}
++
++static void hardware_disable(void)
++{
++	vmclear_local_loaded_vmcss();
++	kvm_cpu_vmxoff();
++}
++
++static __init int adjust_vmx_controls(u32 ctl_min, u32 ctl_opt,
++				      u32 msr, u32 *result)
++{
++	u32 vmx_msr_low, vmx_msr_high;
++	u32 ctl = ctl_min | ctl_opt;
++
++	rdmsr(msr, vmx_msr_low, vmx_msr_high);
++
++	ctl &= vmx_msr_high; /* bit == 0 in high word ==> must be zero */
++	ctl |= vmx_msr_low;  /* bit == 1 in low word  ==> must be one  */
++
++	/* Ensure minimum (required) set of control bits are supported. */
++	if (ctl_min & ~ctl)
++		return -EIO;
++
++	*result = ctl;
++	return 0;
++}
++
++static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf,
++				    struct vmx_capability *vmx_cap)
++{
++	u32 vmx_msr_low, vmx_msr_high;
++	u32 min, opt, min2, opt2;
++	u32 _pin_based_exec_control = 0;
++	u32 _cpu_based_exec_control = 0;
++	u32 _cpu_based_2nd_exec_control = 0;
++	u32 _vmexit_control = 0;
++	u32 _vmentry_control = 0;
++
++	memset(vmcs_conf, 0, sizeof(*vmcs_conf));
++	min = CPU_BASED_HLT_EXITING |
++#ifdef CONFIG_X86_64
++	      CPU_BASED_CR8_LOAD_EXITING |
++	      CPU_BASED_CR8_STORE_EXITING |
++#endif
++	      CPU_BASED_CR3_LOAD_EXITING |
++	      CPU_BASED_CR3_STORE_EXITING |
++	      CPU_BASED_UNCOND_IO_EXITING |
++	      CPU_BASED_MOV_DR_EXITING |
++	      CPU_BASED_USE_TSC_OFFSETTING |
++	      CPU_BASED_MWAIT_EXITING |
++	      CPU_BASED_MONITOR_EXITING |
++	      CPU_BASED_INVLPG_EXITING |
++	      CPU_BASED_RDPMC_EXITING;
++
++	opt = CPU_BASED_TPR_SHADOW |
++	      CPU_BASED_USE_MSR_BITMAPS |
++	      CPU_BASED_ACTIVATE_SECONDARY_CONTROLS;
++	if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_PROCBASED_CTLS,
++				&_cpu_based_exec_control) < 0)
++		return -EIO;
++#ifdef CONFIG_X86_64
++	if ((_cpu_based_exec_control & CPU_BASED_TPR_SHADOW))
++		_cpu_based_exec_control &= ~CPU_BASED_CR8_LOAD_EXITING &
++					   ~CPU_BASED_CR8_STORE_EXITING;
++#endif
++	if (_cpu_based_exec_control & CPU_BASED_ACTIVATE_SECONDARY_CONTROLS) {
++		min2 = 0;
++		opt2 = SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |
++			SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE |
++			SECONDARY_EXEC_WBINVD_EXITING |
++			SECONDARY_EXEC_ENABLE_VPID |
++			SECONDARY_EXEC_ENABLE_EPT |
++			SECONDARY_EXEC_UNRESTRICTED_GUEST |
++			SECONDARY_EXEC_PAUSE_LOOP_EXITING |
++			SECONDARY_EXEC_DESC |
++			SECONDARY_EXEC_RDTSCP |
++			SECONDARY_EXEC_ENABLE_INVPCID |
++			SECONDARY_EXEC_APIC_REGISTER_VIRT |
++			SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY |
++			SECONDARY_EXEC_SHADOW_VMCS |
++			SECONDARY_EXEC_XSAVES |
++			SECONDARY_EXEC_RDSEED_EXITING |
++			SECONDARY_EXEC_RDRAND_EXITING |
++			SECONDARY_EXEC_ENABLE_PML |
++			SECONDARY_EXEC_TSC_SCALING |
++			SECONDARY_EXEC_ENABLE_USR_WAIT_PAUSE |
++			SECONDARY_EXEC_PT_USE_GPA |
++			SECONDARY_EXEC_PT_CONCEAL_VMX |
++			SECONDARY_EXEC_ENABLE_VMFUNC |
++			SECONDARY_EXEC_ENCLS_EXITING;
++		if (adjust_vmx_controls(min2, opt2,
++					MSR_IA32_VMX_PROCBASED_CTLS2,
++					&_cpu_based_2nd_exec_control) < 0)
++			return -EIO;
++	}
++#ifndef CONFIG_X86_64
++	if (!(_cpu_based_2nd_exec_control &
++				SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES))
++		_cpu_based_exec_control &= ~CPU_BASED_TPR_SHADOW;
++#endif
++
++	if (!(_cpu_based_exec_control & CPU_BASED_TPR_SHADOW))
++		_cpu_based_2nd_exec_control &= ~(
++				SECONDARY_EXEC_APIC_REGISTER_VIRT |
++				SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE |
++				SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY);
++
++	rdmsr_safe(MSR_IA32_VMX_EPT_VPID_CAP,
++		&vmx_cap->ept, &vmx_cap->vpid);
++
++	if (_cpu_based_2nd_exec_control & SECONDARY_EXEC_ENABLE_EPT) {
++		/* CR3 accesses and invlpg don't need to cause VM Exits when EPT
++		   enabled */
++		_cpu_based_exec_control &= ~(CPU_BASED_CR3_LOAD_EXITING |
++					     CPU_BASED_CR3_STORE_EXITING |
++					     CPU_BASED_INVLPG_EXITING);
++	} else if (vmx_cap->ept) {
++		vmx_cap->ept = 0;
++		pr_warn_once("EPT CAP should not exist if not support "
++				"1-setting enable EPT VM-execution control\n");
++	}
++	if (!(_cpu_based_2nd_exec_control & SECONDARY_EXEC_ENABLE_VPID) &&
++		vmx_cap->vpid) {
++		vmx_cap->vpid = 0;
++		pr_warn_once("VPID CAP should not exist if not support "
++				"1-setting enable VPID VM-execution control\n");
++	}
++
++	min = VM_EXIT_SAVE_DEBUG_CONTROLS | VM_EXIT_ACK_INTR_ON_EXIT;
++#ifdef CONFIG_X86_64
++	min |= VM_EXIT_HOST_ADDR_SPACE_SIZE;
++#endif
++	opt = VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL |
++	      VM_EXIT_LOAD_IA32_PAT |
++	      VM_EXIT_LOAD_IA32_EFER |
++	      VM_EXIT_CLEAR_BNDCFGS |
++	      VM_EXIT_PT_CONCEAL_PIP |
++	      VM_EXIT_CLEAR_IA32_RTIT_CTL;
++	if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_EXIT_CTLS,
++				&_vmexit_control) < 0)
++		return -EIO;
++
++	min = PIN_BASED_EXT_INTR_MASK | PIN_BASED_NMI_EXITING;
++	opt = PIN_BASED_VIRTUAL_NMIS | PIN_BASED_POSTED_INTR |
++		 PIN_BASED_VMX_PREEMPTION_TIMER;
++	if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_PINBASED_CTLS,
++				&_pin_based_exec_control) < 0)
++		return -EIO;
++
++	if (cpu_has_broken_vmx_preemption_timer())
++		_pin_based_exec_control &= ~PIN_BASED_VMX_PREEMPTION_TIMER;
++	if (!(_cpu_based_2nd_exec_control &
++		SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY))
++		_pin_based_exec_control &= ~PIN_BASED_POSTED_INTR;
++
++	min = VM_ENTRY_LOAD_DEBUG_CONTROLS;
++	opt = VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL |
++	      VM_ENTRY_LOAD_IA32_PAT |
++	      VM_ENTRY_LOAD_IA32_EFER |
++	      VM_ENTRY_LOAD_BNDCFGS |
++	      VM_ENTRY_PT_CONCEAL_PIP |
++	      VM_ENTRY_LOAD_IA32_RTIT_CTL;
++	if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_ENTRY_CTLS,
++				&_vmentry_control) < 0)
++		return -EIO;
++
++	/*
++	 * Some cpus support VM_{ENTRY,EXIT}_IA32_PERF_GLOBAL_CTRL but they
++	 * can't be used due to an errata where VM Exit may incorrectly clear
++	 * IA32_PERF_GLOBAL_CTRL[34:32].  Workaround the errata by using the
++	 * MSR load mechanism to switch IA32_PERF_GLOBAL_CTRL.
++	 */
++	if (boot_cpu_data.x86 == 0x6) {
++		switch (boot_cpu_data.x86_model) {
++		case 26: /* AAK155 */
++		case 30: /* AAP115 */
++		case 37: /* AAT100 */
++		case 44: /* BC86,AAY89,BD102 */
++		case 46: /* BA97 */
++			_vmentry_control &= ~VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL;
++			_vmexit_control &= ~VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL;
++			pr_warn_once("kvm: VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL "
++					"does not work properly. Using workaround\n");
++			break;
++		default:
++			break;
++		}
++	}
++
++
++	rdmsr(MSR_IA32_VMX_BASIC, vmx_msr_low, vmx_msr_high);
++
++	/* IA-32 SDM Vol 3B: VMCS size is never greater than 4kB. */
++	if ((vmx_msr_high & 0x1fff) > PAGE_SIZE)
++		return -EIO;
++
++#ifdef CONFIG_X86_64
++	/* IA-32 SDM Vol 3B: 64-bit CPUs always have VMX_BASIC_MSR[48]==0. */
++	if (vmx_msr_high & (1u<<16))
++		return -EIO;
++#endif
++
++	/* Require Write-Back (WB) memory type for VMCS accesses. */
++	if (((vmx_msr_high >> 18) & 15) != 6)
++		return -EIO;
++
++	vmcs_conf->size = vmx_msr_high & 0x1fff;
++	vmcs_conf->order = get_order(vmcs_conf->size);
++	vmcs_conf->basic_cap = vmx_msr_high & ~0x1fff;
++
++	vmcs_conf->revision_id = vmx_msr_low;
++
++	vmcs_conf->pin_based_exec_ctrl = _pin_based_exec_control;
++	vmcs_conf->cpu_based_exec_ctrl = _cpu_based_exec_control;
++	vmcs_conf->cpu_based_2nd_exec_ctrl = _cpu_based_2nd_exec_control;
++	vmcs_conf->vmexit_ctrl         = _vmexit_control;
++	vmcs_conf->vmentry_ctrl        = _vmentry_control;
++
++	if (static_branch_unlikely(&enable_evmcs))
++		evmcs_sanitize_exec_ctrls(vmcs_conf);
++
++	return 0;
++}
++
++struct vmcs *alloc_vmcs_cpu(bool shadow, int cpu, gfp_t flags)
++{
++	int node = cpu_to_node(cpu);
++	struct page *pages;
++	struct vmcs *vmcs;
++
++	pages = __alloc_pages_node(node, flags, vmcs_config.order);
++	if (!pages)
++		return NULL;
++	vmcs = page_address(pages);
++	memset(vmcs, 0, vmcs_config.size);
++
++	/* KVM supports Enlightened VMCS v1 only */
++	if (static_branch_unlikely(&enable_evmcs))
++		vmcs->hdr.revision_id = KVM_EVMCS_VERSION;
++	else
++		vmcs->hdr.revision_id = vmcs_config.revision_id;
++
++	if (shadow)
++		vmcs->hdr.shadow_vmcs = 1;
++	return vmcs;
++}
++
++void free_vmcs(struct vmcs *vmcs)
++{
++	free_pages((unsigned long)vmcs, vmcs_config.order);
++}
++
++/*
++ * Free a VMCS, but before that VMCLEAR it on the CPU where it was last loaded
++ */
++void free_loaded_vmcs(struct loaded_vmcs *loaded_vmcs)
++{
++	if (!loaded_vmcs->vmcs)
++		return;
++	loaded_vmcs_clear(loaded_vmcs);
++	free_vmcs(loaded_vmcs->vmcs);
++	loaded_vmcs->vmcs = NULL;
++	if (loaded_vmcs->msr_bitmap)
++		free_page((unsigned long)loaded_vmcs->msr_bitmap);
++	WARN_ON(loaded_vmcs->shadow_vmcs != NULL);
++}
++
++int alloc_loaded_vmcs(struct loaded_vmcs *loaded_vmcs)
++{
++	loaded_vmcs->vmcs = alloc_vmcs(false);
++	if (!loaded_vmcs->vmcs)
++		return -ENOMEM;
++
++	loaded_vmcs->shadow_vmcs = NULL;
++	loaded_vmcs->hv_timer_soft_disabled = false;
++	loaded_vmcs_init(loaded_vmcs);
++
++	if (cpu_has_vmx_msr_bitmap()) {
++		loaded_vmcs->msr_bitmap = (unsigned long *)
++				__get_free_page(GFP_KERNEL_ACCOUNT);
++		if (!loaded_vmcs->msr_bitmap)
++			goto out_vmcs;
++		memset(loaded_vmcs->msr_bitmap, 0xff, PAGE_SIZE);
++
++		if (IS_ENABLED(CONFIG_HYPERV) &&
++		    static_branch_unlikely(&enable_evmcs) &&
++		    (ms_hyperv.nested_features & HV_X64_NESTED_MSR_BITMAP)) {
++			struct hv_enlightened_vmcs *evmcs =
++				(struct hv_enlightened_vmcs *)loaded_vmcs->vmcs;
++
++			evmcs->hv_enlightenments_control.msr_bitmap = 1;
++		}
++	}
++
++	memset(&loaded_vmcs->host_state, 0, sizeof(struct vmcs_host_state));
++	memset(&loaded_vmcs->controls_shadow, 0,
++		sizeof(struct vmcs_controls_shadow));
++
++	return 0;
++
++out_vmcs:
++	free_loaded_vmcs(loaded_vmcs);
++	return -ENOMEM;
++}
++
++static void free_kvm_area(void)
++{
++	int cpu;
++
++	for_each_possible_cpu(cpu) {
++		free_vmcs(per_cpu(vmxarea, cpu));
++		per_cpu(vmxarea, cpu) = NULL;
++	}
++}
++
++static __init int alloc_kvm_area(void)
++{
++	int cpu;
++
++	for_each_possible_cpu(cpu) {
++		struct vmcs *vmcs;
++
++		vmcs = alloc_vmcs_cpu(false, cpu, GFP_KERNEL);
++		if (!vmcs) {
++			free_kvm_area();
++			return -ENOMEM;
++		}
++
++		/*
++		 * When eVMCS is enabled, alloc_vmcs_cpu() sets
++		 * vmcs->revision_id to KVM_EVMCS_VERSION instead of
++		 * revision_id reported by MSR_IA32_VMX_BASIC.
++		 *
++		 * However, even though not explicitly documented by
++		 * TLFS, VMXArea passed as VMXON argument should
++		 * still be marked with revision_id reported by
++		 * physical CPU.
++		 */
++		if (static_branch_unlikely(&enable_evmcs))
++			vmcs->hdr.revision_id = vmcs_config.revision_id;
++
++		per_cpu(vmxarea, cpu) = vmcs;
++	}
++	return 0;
++}
++
++static void fix_pmode_seg(struct kvm_vcpu *vcpu, int seg,
++		struct kvm_segment *save)
++{
++	if (!emulate_invalid_guest_state) {
++		/*
++		 * CS and SS RPL should be equal during guest entry according
++		 * to VMX spec, but in reality it is not always so. Since vcpu
++		 * is in the middle of the transition from real mode to
++		 * protected mode it is safe to assume that RPL 0 is a good
++		 * default value.
++		 */
++		if (seg == VCPU_SREG_CS || seg == VCPU_SREG_SS)
++			save->selector &= ~SEGMENT_RPL_MASK;
++		save->dpl = save->selector & SEGMENT_RPL_MASK;
++		save->s = 1;
++	}
++	vmx_set_segment(vcpu, save, seg);
++}
++
++static void enter_pmode(struct kvm_vcpu *vcpu)
++{
++	unsigned long flags;
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++
++	/*
++	 * Update real mode segment cache. It may be not up-to-date if sement
++	 * register was written while vcpu was in a guest mode.
++	 */
++	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_ES], VCPU_SREG_ES);
++	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_DS], VCPU_SREG_DS);
++	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_FS], VCPU_SREG_FS);
++	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_GS], VCPU_SREG_GS);
++	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_SS], VCPU_SREG_SS);
++	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_CS], VCPU_SREG_CS);
++
++	vmx->rmode.vm86_active = 0;
++
++	vmx_segment_cache_clear(vmx);
++
++	vmx_set_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_TR], VCPU_SREG_TR);
++
++	flags = vmcs_readl(GUEST_RFLAGS);
++	flags &= RMODE_GUEST_OWNED_EFLAGS_BITS;
++	flags |= vmx->rmode.save_rflags & ~RMODE_GUEST_OWNED_EFLAGS_BITS;
++	vmcs_writel(GUEST_RFLAGS, flags);
++
++	vmcs_writel(GUEST_CR4, (vmcs_readl(GUEST_CR4) & ~X86_CR4_VME) |
++			(vmcs_readl(CR4_READ_SHADOW) & X86_CR4_VME));
++
++	update_exception_bitmap(vcpu);
++
++	fix_pmode_seg(vcpu, VCPU_SREG_CS, &vmx->rmode.segs[VCPU_SREG_CS]);
++	fix_pmode_seg(vcpu, VCPU_SREG_SS, &vmx->rmode.segs[VCPU_SREG_SS]);
++	fix_pmode_seg(vcpu, VCPU_SREG_ES, &vmx->rmode.segs[VCPU_SREG_ES]);
++	fix_pmode_seg(vcpu, VCPU_SREG_DS, &vmx->rmode.segs[VCPU_SREG_DS]);
++	fix_pmode_seg(vcpu, VCPU_SREG_FS, &vmx->rmode.segs[VCPU_SREG_FS]);
++	fix_pmode_seg(vcpu, VCPU_SREG_GS, &vmx->rmode.segs[VCPU_SREG_GS]);
++}
++
++static void fix_rmode_seg(int seg, struct kvm_segment *save)
++{
++	const struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
++	struct kvm_segment var = *save;
++
++	var.dpl = 0x3;
++	if (seg == VCPU_SREG_CS)
++		var.type = 0x3;
++
++	if (!emulate_invalid_guest_state) {
++		var.selector = var.base >> 4;
++		var.base = var.base & 0xffff0;
++		var.limit = 0xffff;
++		var.g = 0;
++		var.db = 0;
++		var.present = 1;
++		var.s = 1;
++		var.l = 0;
++		var.unusable = 0;
++		var.type = 0x3;
++		var.avl = 0;
++		if (save->base & 0xf)
++			printk_once(KERN_WARNING "kvm: segment base is not "
++					"paragraph aligned when entering "
++					"protected mode (seg=%d)", seg);
++	}
++
++	vmcs_write16(sf->selector, var.selector);
++	vmcs_writel(sf->base, var.base);
++	vmcs_write32(sf->limit, var.limit);
++	vmcs_write32(sf->ar_bytes, vmx_segment_access_rights(&var));
++}
++
++static void enter_rmode(struct kvm_vcpu *vcpu)
++{
++	unsigned long flags;
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	struct kvm_vmx *kvm_vmx = to_kvm_vmx(vcpu->kvm);
++
++	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_TR], VCPU_SREG_TR);
++	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_ES], VCPU_SREG_ES);
++	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_DS], VCPU_SREG_DS);
++	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_FS], VCPU_SREG_FS);
++	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_GS], VCPU_SREG_GS);
++	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_SS], VCPU_SREG_SS);
++	vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_CS], VCPU_SREG_CS);
++
++	vmx->rmode.vm86_active = 1;
++
++	/*
++	 * Very old userspace does not call KVM_SET_TSS_ADDR before entering
++	 * vcpu. Warn the user that an update is overdue.
++	 */
++	if (!kvm_vmx->tss_addr)
++		printk_once(KERN_WARNING "kvm: KVM_SET_TSS_ADDR need to be "
++			     "called before entering vcpu\n");
++
++	vmx_segment_cache_clear(vmx);
++
++	vmcs_writel(GUEST_TR_BASE, kvm_vmx->tss_addr);
++	vmcs_write32(GUEST_TR_LIMIT, RMODE_TSS_SIZE - 1);
++	vmcs_write32(GUEST_TR_AR_BYTES, 0x008b);
++
++	flags = vmcs_readl(GUEST_RFLAGS);
++	vmx->rmode.save_rflags = flags;
++
++	flags |= X86_EFLAGS_IOPL | X86_EFLAGS_VM;
++
++	vmcs_writel(GUEST_RFLAGS, flags);
++	vmcs_writel(GUEST_CR4, vmcs_readl(GUEST_CR4) | X86_CR4_VME);
++	update_exception_bitmap(vcpu);
++
++	fix_rmode_seg(VCPU_SREG_SS, &vmx->rmode.segs[VCPU_SREG_SS]);
++	fix_rmode_seg(VCPU_SREG_CS, &vmx->rmode.segs[VCPU_SREG_CS]);
++	fix_rmode_seg(VCPU_SREG_ES, &vmx->rmode.segs[VCPU_SREG_ES]);
++	fix_rmode_seg(VCPU_SREG_DS, &vmx->rmode.segs[VCPU_SREG_DS]);
++	fix_rmode_seg(VCPU_SREG_GS, &vmx->rmode.segs[VCPU_SREG_GS]);
++	fix_rmode_seg(VCPU_SREG_FS, &vmx->rmode.segs[VCPU_SREG_FS]);
++
++	kvm_mmu_reset_context(vcpu);
++}
++
++void vmx_set_efer(struct kvm_vcpu *vcpu, u64 efer)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	struct shared_msr_entry *msr = find_msr_entry(vmx, MSR_EFER);
++
++	if (!msr)
++		return;
++
++	vcpu->arch.efer = efer;
++	if (efer & EFER_LMA) {
++		vm_entry_controls_setbit(to_vmx(vcpu), VM_ENTRY_IA32E_MODE);
++		msr->data = efer;
++	} else {
++		vm_entry_controls_clearbit(to_vmx(vcpu), VM_ENTRY_IA32E_MODE);
++
++		msr->data = efer & ~EFER_LME;
++	}
++	setup_msrs(vmx);
++}
++
++#ifdef CONFIG_X86_64
++
++static void enter_lmode(struct kvm_vcpu *vcpu)
++{
++	u32 guest_tr_ar;
++
++	vmx_segment_cache_clear(to_vmx(vcpu));
++
++	guest_tr_ar = vmcs_read32(GUEST_TR_AR_BYTES);
++	if ((guest_tr_ar & VMX_AR_TYPE_MASK) != VMX_AR_TYPE_BUSY_64_TSS) {
++		pr_debug_ratelimited("%s: tss fixup for long mode. \n",
++				     __func__);
++		vmcs_write32(GUEST_TR_AR_BYTES,
++			     (guest_tr_ar & ~VMX_AR_TYPE_MASK)
++			     | VMX_AR_TYPE_BUSY_64_TSS);
++	}
++	vmx_set_efer(vcpu, vcpu->arch.efer | EFER_LMA);
++}
++
++static void exit_lmode(struct kvm_vcpu *vcpu)
++{
++	vm_entry_controls_clearbit(to_vmx(vcpu), VM_ENTRY_IA32E_MODE);
++	vmx_set_efer(vcpu, vcpu->arch.efer & ~EFER_LMA);
++}
++
++#endif
++
++static void vmx_flush_tlb_gva(struct kvm_vcpu *vcpu, gva_t addr)
++{
++	int vpid = to_vmx(vcpu)->vpid;
++
++	if (!vpid_sync_vcpu_addr(vpid, addr))
++		vpid_sync_context(vpid);
++
++	/*
++	 * If VPIDs are not supported or enabled, then the above is a no-op.
++	 * But we don't really need a TLB flush in that case anyway, because
++	 * each VM entry/exit includes an implicit flush when VPID is 0.
++	 */
++}
++
++static void vmx_decache_cr0_guest_bits(struct kvm_vcpu *vcpu)
++{
++	ulong cr0_guest_owned_bits = vcpu->arch.cr0_guest_owned_bits;
++
++	vcpu->arch.cr0 &= ~cr0_guest_owned_bits;
++	vcpu->arch.cr0 |= vmcs_readl(GUEST_CR0) & cr0_guest_owned_bits;
++}
++
++static void vmx_decache_cr4_guest_bits(struct kvm_vcpu *vcpu)
++{
++	ulong cr4_guest_owned_bits = vcpu->arch.cr4_guest_owned_bits;
++
++	vcpu->arch.cr4 &= ~cr4_guest_owned_bits;
++	vcpu->arch.cr4 |= vmcs_readl(GUEST_CR4) & cr4_guest_owned_bits;
++}
++
++static void ept_load_pdptrs(struct kvm_vcpu *vcpu)
++{
++	struct kvm_mmu *mmu = vcpu->arch.walk_mmu;
++
++	if (!kvm_register_is_dirty(vcpu, VCPU_EXREG_PDPTR))
++		return;
++
++	if (is_pae_paging(vcpu)) {
++		vmcs_write64(GUEST_PDPTR0, mmu->pdptrs[0]);
++		vmcs_write64(GUEST_PDPTR1, mmu->pdptrs[1]);
++		vmcs_write64(GUEST_PDPTR2, mmu->pdptrs[2]);
++		vmcs_write64(GUEST_PDPTR3, mmu->pdptrs[3]);
++	}
++}
++
++void ept_save_pdptrs(struct kvm_vcpu *vcpu)
++{
++	struct kvm_mmu *mmu = vcpu->arch.walk_mmu;
++
++	if (is_pae_paging(vcpu)) {
++		mmu->pdptrs[0] = vmcs_read64(GUEST_PDPTR0);
++		mmu->pdptrs[1] = vmcs_read64(GUEST_PDPTR1);
++		mmu->pdptrs[2] = vmcs_read64(GUEST_PDPTR2);
++		mmu->pdptrs[3] = vmcs_read64(GUEST_PDPTR3);
++	}
++
++	kvm_register_mark_dirty(vcpu, VCPU_EXREG_PDPTR);
++}
++
++static void ept_update_paging_mode_cr0(unsigned long *hw_cr0,
++					unsigned long cr0,
++					struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++
++	if (!kvm_register_is_available(vcpu, VCPU_EXREG_CR3))
++		vmx_cache_reg(vcpu, VCPU_EXREG_CR3);
++	if (!(cr0 & X86_CR0_PG)) {
++		/* From paging/starting to nonpaging */
++		exec_controls_setbit(vmx, CPU_BASED_CR3_LOAD_EXITING |
++					  CPU_BASED_CR3_STORE_EXITING);
++		vcpu->arch.cr0 = cr0;
++		vmx_set_cr4(vcpu, kvm_read_cr4(vcpu));
++	} else if (!is_paging(vcpu)) {
++		/* From nonpaging to paging */
++		exec_controls_clearbit(vmx, CPU_BASED_CR3_LOAD_EXITING |
++					    CPU_BASED_CR3_STORE_EXITING);
++		vcpu->arch.cr0 = cr0;
++		vmx_set_cr4(vcpu, kvm_read_cr4(vcpu));
++	}
++
++	if (!(cr0 & X86_CR0_WP))
++		*hw_cr0 &= ~X86_CR0_WP;
++}
++
++void vmx_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	unsigned long hw_cr0;
++
++	hw_cr0 = (cr0 & ~KVM_VM_CR0_ALWAYS_OFF);
++	if (enable_unrestricted_guest)
++		hw_cr0 |= KVM_VM_CR0_ALWAYS_ON_UNRESTRICTED_GUEST;
++	else {
++		hw_cr0 |= KVM_VM_CR0_ALWAYS_ON;
++
++		if (vmx->rmode.vm86_active && (cr0 & X86_CR0_PE))
++			enter_pmode(vcpu);
++
++		if (!vmx->rmode.vm86_active && !(cr0 & X86_CR0_PE))
++			enter_rmode(vcpu);
++	}
++
++#ifdef CONFIG_X86_64
++	if (vcpu->arch.efer & EFER_LME) {
++		if (!is_paging(vcpu) && (cr0 & X86_CR0_PG))
++			enter_lmode(vcpu);
++		if (is_paging(vcpu) && !(cr0 & X86_CR0_PG))
++			exit_lmode(vcpu);
++	}
++#endif
++
++	if (enable_ept && !enable_unrestricted_guest)
++		ept_update_paging_mode_cr0(&hw_cr0, cr0, vcpu);
++
++	vmcs_writel(CR0_READ_SHADOW, cr0);
++	vmcs_writel(GUEST_CR0, hw_cr0);
++	vcpu->arch.cr0 = cr0;
++
++	/* depends on vcpu->arch.cr0 to be set to a new value */
++	vmx->emulation_required = emulation_required(vcpu);
++}
++
++static int get_ept_level(struct kvm_vcpu *vcpu)
++{
++	if (cpu_has_vmx_ept_5levels() && (cpuid_maxphyaddr(vcpu) > 48))
++		return 5;
++	return 4;
++}
++
++u64 construct_eptp(struct kvm_vcpu *vcpu, unsigned long root_hpa)
++{
++	u64 eptp = VMX_EPTP_MT_WB;
++
++	eptp |= (get_ept_level(vcpu) == 5) ? VMX_EPTP_PWL_5 : VMX_EPTP_PWL_4;
++
++	if (enable_ept_ad_bits &&
++	    (!is_guest_mode(vcpu) || nested_ept_ad_enabled(vcpu)))
++		eptp |= VMX_EPTP_AD_ENABLE_BIT;
++	eptp |= (root_hpa & PAGE_MASK);
++
++	return eptp;
++}
++
++void vmx_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3)
++{
++	struct kvm *kvm = vcpu->kvm;
++	bool update_guest_cr3 = true;
++	unsigned long guest_cr3;
++	u64 eptp;
++
++	guest_cr3 = cr3;
++	if (enable_ept) {
++		eptp = construct_eptp(vcpu, cr3);
++		vmcs_write64(EPT_POINTER, eptp);
++
++		if (kvm_x86_ops->tlb_remote_flush) {
++			spin_lock(&to_kvm_vmx(kvm)->ept_pointer_lock);
++			to_vmx(vcpu)->ept_pointer = eptp;
++			to_kvm_vmx(kvm)->ept_pointers_match
++				= EPT_POINTERS_CHECK;
++			spin_unlock(&to_kvm_vmx(kvm)->ept_pointer_lock);
++		}
++
++		/* Loading vmcs02.GUEST_CR3 is handled by nested VM-Enter. */
++		if (is_guest_mode(vcpu))
++			update_guest_cr3 = false;
++		else if (!enable_unrestricted_guest && !is_paging(vcpu))
++			guest_cr3 = to_kvm_vmx(kvm)->ept_identity_map_addr;
++		else if (test_bit(VCPU_EXREG_CR3, (ulong *)&vcpu->arch.regs_avail))
++			guest_cr3 = vcpu->arch.cr3;
++		else /* vmcs01.GUEST_CR3 is already up-to-date. */
++			update_guest_cr3 = false;
++		ept_load_pdptrs(vcpu);
++	}
++
++	if (update_guest_cr3)
++		vmcs_writel(GUEST_CR3, guest_cr3);
++}
++
++int vmx_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	/*
++	 * Pass through host's Machine Check Enable value to hw_cr4, which
++	 * is in force while we are in guest mode.  Do not let guests control
++	 * this bit, even if host CR4.MCE == 0.
++	 */
++	unsigned long hw_cr4;
++
++	hw_cr4 = (cr4_read_shadow() & X86_CR4_MCE) | (cr4 & ~X86_CR4_MCE);
++	if (enable_unrestricted_guest)
++		hw_cr4 |= KVM_VM_CR4_ALWAYS_ON_UNRESTRICTED_GUEST;
++	else if (vmx->rmode.vm86_active)
++		hw_cr4 |= KVM_RMODE_VM_CR4_ALWAYS_ON;
++	else
++		hw_cr4 |= KVM_PMODE_VM_CR4_ALWAYS_ON;
++
++	if (!boot_cpu_has(X86_FEATURE_UMIP) && vmx_umip_emulated()) {
++		if (cr4 & X86_CR4_UMIP) {
++			secondary_exec_controls_setbit(vmx, SECONDARY_EXEC_DESC);
++			hw_cr4 &= ~X86_CR4_UMIP;
++		} else if (!is_guest_mode(vcpu) ||
++			!nested_cpu_has2(get_vmcs12(vcpu), SECONDARY_EXEC_DESC)) {
++			secondary_exec_controls_clearbit(vmx, SECONDARY_EXEC_DESC);
++		}
++	}
++
++	if (cr4 & X86_CR4_VMXE) {
++		/*
++		 * To use VMXON (and later other VMX instructions), a guest
++		 * must first be able to turn on cr4.VMXE (see handle_vmon()).
++		 * So basically the check on whether to allow nested VMX
++		 * is here.  We operate under the default treatment of SMM,
++		 * so VMX cannot be enabled under SMM.
++		 */
++		if (!nested_vmx_allowed(vcpu) || is_smm(vcpu))
++			return 1;
++	}
++
++	if (vmx->nested.vmxon && !nested_cr4_valid(vcpu, cr4))
++		return 1;
++
++	vcpu->arch.cr4 = cr4;
++
++	if (!enable_unrestricted_guest) {
++		if (enable_ept) {
++			if (!is_paging(vcpu)) {
++				hw_cr4 &= ~X86_CR4_PAE;
++				hw_cr4 |= X86_CR4_PSE;
++			} else if (!(cr4 & X86_CR4_PAE)) {
++				hw_cr4 &= ~X86_CR4_PAE;
++			}
++		}
++
++		/*
++		 * SMEP/SMAP/PKU is disabled if CPU is in non-paging mode in
++		 * hardware.  To emulate this behavior, SMEP/SMAP/PKU needs
++		 * to be manually disabled when guest switches to non-paging
++		 * mode.
++		 *
++		 * If !enable_unrestricted_guest, the CPU is always running
++		 * with CR0.PG=1 and CR4 needs to be modified.
++		 * If enable_unrestricted_guest, the CPU automatically
++		 * disables SMEP/SMAP/PKU when the guest sets CR0.PG=0.
++		 */
++		if (!is_paging(vcpu))
++			hw_cr4 &= ~(X86_CR4_SMEP | X86_CR4_SMAP | X86_CR4_PKE);
++	}
++
++	vmcs_writel(CR4_READ_SHADOW, cr4);
++	vmcs_writel(GUEST_CR4, hw_cr4);
++	return 0;
++}
++
++void vmx_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	u32 ar;
++
++	if (vmx->rmode.vm86_active && seg != VCPU_SREG_LDTR) {
++		*var = vmx->rmode.segs[seg];
++		if (seg == VCPU_SREG_TR
++		    || var->selector == vmx_read_guest_seg_selector(vmx, seg))
++			return;
++		var->base = vmx_read_guest_seg_base(vmx, seg);
++		var->selector = vmx_read_guest_seg_selector(vmx, seg);
++		return;
++	}
++	var->base = vmx_read_guest_seg_base(vmx, seg);
++	var->limit = vmx_read_guest_seg_limit(vmx, seg);
++	var->selector = vmx_read_guest_seg_selector(vmx, seg);
++	ar = vmx_read_guest_seg_ar(vmx, seg);
++	var->unusable = (ar >> 16) & 1;
++	var->type = ar & 15;
++	var->s = (ar >> 4) & 1;
++	var->dpl = (ar >> 5) & 3;
++	/*
++	 * Some userspaces do not preserve unusable property. Since usable
++	 * segment has to be present according to VMX spec we can use present
++	 * property to amend userspace bug by making unusable segment always
++	 * nonpresent. vmx_segment_access_rights() already marks nonpresent
++	 * segment as unusable.
++	 */
++	var->present = !var->unusable;
++	var->avl = (ar >> 12) & 1;
++	var->l = (ar >> 13) & 1;
++	var->db = (ar >> 14) & 1;
++	var->g = (ar >> 15) & 1;
++}
++
++static u64 vmx_get_segment_base(struct kvm_vcpu *vcpu, int seg)
++{
++	struct kvm_segment s;
++
++	if (to_vmx(vcpu)->rmode.vm86_active) {
++		vmx_get_segment(vcpu, &s, seg);
++		return s.base;
++	}
++	return vmx_read_guest_seg_base(to_vmx(vcpu), seg);
++}
++
++int vmx_get_cpl(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++
++	if (unlikely(vmx->rmode.vm86_active))
++		return 0;
++	else {
++		int ar = vmx_read_guest_seg_ar(vmx, VCPU_SREG_SS);
++		return VMX_AR_DPL(ar);
++	}
++}
++
++static u32 vmx_segment_access_rights(struct kvm_segment *var)
++{
++	u32 ar;
++
++	if (var->unusable || !var->present)
++		ar = 1 << 16;
++	else {
++		ar = var->type & 15;
++		ar |= (var->s & 1) << 4;
++		ar |= (var->dpl & 3) << 5;
++		ar |= (var->present & 1) << 7;
++		ar |= (var->avl & 1) << 12;
++		ar |= (var->l & 1) << 13;
++		ar |= (var->db & 1) << 14;
++		ar |= (var->g & 1) << 15;
++	}
++
++	return ar;
++}
++
++void vmx_set_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	const struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
++
++	vmx_segment_cache_clear(vmx);
++
++	if (vmx->rmode.vm86_active && seg != VCPU_SREG_LDTR) {
++		vmx->rmode.segs[seg] = *var;
++		if (seg == VCPU_SREG_TR)
++			vmcs_write16(sf->selector, var->selector);
++		else if (var->s)
++			fix_rmode_seg(seg, &vmx->rmode.segs[seg]);
++		goto out;
++	}
++
++	vmcs_writel(sf->base, var->base);
++	vmcs_write32(sf->limit, var->limit);
++	vmcs_write16(sf->selector, var->selector);
++
++	/*
++	 *   Fix the "Accessed" bit in AR field of segment registers for older
++	 * qemu binaries.
++	 *   IA32 arch specifies that at the time of processor reset the
++	 * "Accessed" bit in the AR field of segment registers is 1. And qemu
++	 * is setting it to 0 in the userland code. This causes invalid guest
++	 * state vmexit when "unrestricted guest" mode is turned on.
++	 *    Fix for this setup issue in cpu_reset is being pushed in the qemu
++	 * tree. Newer qemu binaries with that qemu fix would not need this
++	 * kvm hack.
++	 */
++	if (enable_unrestricted_guest && (seg != VCPU_SREG_LDTR))
++		var->type |= 0x1; /* Accessed */
++
++	vmcs_write32(sf->ar_bytes, vmx_segment_access_rights(var));
++
++out:
++	vmx->emulation_required = emulation_required(vcpu);
++}
++
++static void vmx_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l)
++{
++	u32 ar = vmx_read_guest_seg_ar(to_vmx(vcpu), VCPU_SREG_CS);
++
++	*db = (ar >> 14) & 1;
++	*l = (ar >> 13) & 1;
++}
++
++static void vmx_get_idt(struct kvm_vcpu *vcpu, struct desc_ptr *dt)
++{
++	dt->size = vmcs_read32(GUEST_IDTR_LIMIT);
++	dt->address = vmcs_readl(GUEST_IDTR_BASE);
++}
++
++static void vmx_set_idt(struct kvm_vcpu *vcpu, struct desc_ptr *dt)
++{
++	vmcs_write32(GUEST_IDTR_LIMIT, dt->size);
++	vmcs_writel(GUEST_IDTR_BASE, dt->address);
++}
++
++static void vmx_get_gdt(struct kvm_vcpu *vcpu, struct desc_ptr *dt)
++{
++	dt->size = vmcs_read32(GUEST_GDTR_LIMIT);
++	dt->address = vmcs_readl(GUEST_GDTR_BASE);
++}
++
++static void vmx_set_gdt(struct kvm_vcpu *vcpu, struct desc_ptr *dt)
++{
++	vmcs_write32(GUEST_GDTR_LIMIT, dt->size);
++	vmcs_writel(GUEST_GDTR_BASE, dt->address);
++}
++
++static bool rmode_segment_valid(struct kvm_vcpu *vcpu, int seg)
++{
++	struct kvm_segment var;
++	u32 ar;
++
++	vmx_get_segment(vcpu, &var, seg);
++	var.dpl = 0x3;
++	if (seg == VCPU_SREG_CS)
++		var.type = 0x3;
++	ar = vmx_segment_access_rights(&var);
++
++	if (var.base != (var.selector << 4))
++		return false;
++	if (var.limit != 0xffff)
++		return false;
++	if (ar != 0xf3)
++		return false;
++
++	return true;
++}
++
++static bool code_segment_valid(struct kvm_vcpu *vcpu)
++{
++	struct kvm_segment cs;
++	unsigned int cs_rpl;
++
++	vmx_get_segment(vcpu, &cs, VCPU_SREG_CS);
++	cs_rpl = cs.selector & SEGMENT_RPL_MASK;
++
++	if (cs.unusable)
++		return false;
++	if (~cs.type & (VMX_AR_TYPE_CODE_MASK|VMX_AR_TYPE_ACCESSES_MASK))
++		return false;
++	if (!cs.s)
++		return false;
++	if (cs.type & VMX_AR_TYPE_WRITEABLE_MASK) {
++		if (cs.dpl > cs_rpl)
++			return false;
++	} else {
++		if (cs.dpl != cs_rpl)
++			return false;
++	}
++	if (!cs.present)
++		return false;
++
++	/* TODO: Add Reserved field check, this'll require a new member in the kvm_segment_field structure */
++	return true;
++}
++
++static bool stack_segment_valid(struct kvm_vcpu *vcpu)
++{
++	struct kvm_segment ss;
++	unsigned int ss_rpl;
++
++	vmx_get_segment(vcpu, &ss, VCPU_SREG_SS);
++	ss_rpl = ss.selector & SEGMENT_RPL_MASK;
++
++	if (ss.unusable)
++		return true;
++	if (ss.type != 3 && ss.type != 7)
++		return false;
++	if (!ss.s)
++		return false;
++	if (ss.dpl != ss_rpl) /* DPL != RPL */
++		return false;
++	if (!ss.present)
++		return false;
++
++	return true;
++}
++
++static bool data_segment_valid(struct kvm_vcpu *vcpu, int seg)
++{
++	struct kvm_segment var;
++	unsigned int rpl;
++
++	vmx_get_segment(vcpu, &var, seg);
++	rpl = var.selector & SEGMENT_RPL_MASK;
++
++	if (var.unusable)
++		return true;
++	if (!var.s)
++		return false;
++	if (!var.present)
++		return false;
++	if (~var.type & (VMX_AR_TYPE_CODE_MASK|VMX_AR_TYPE_WRITEABLE_MASK)) {
++		if (var.dpl < rpl) /* DPL < RPL */
++			return false;
++	}
++
++	/* TODO: Add other members to kvm_segment_field to allow checking for other access
++	 * rights flags
++	 */
++	return true;
++}
++
++static bool tr_valid(struct kvm_vcpu *vcpu)
++{
++	struct kvm_segment tr;
++
++	vmx_get_segment(vcpu, &tr, VCPU_SREG_TR);
++
++	if (tr.unusable)
++		return false;
++	if (tr.selector & SEGMENT_TI_MASK)	/* TI = 1 */
++		return false;
++	if (tr.type != 3 && tr.type != 11) /* TODO: Check if guest is in IA32e mode */
++		return false;
++	if (!tr.present)
++		return false;
++
++	return true;
++}
++
++static bool ldtr_valid(struct kvm_vcpu *vcpu)
++{
++	struct kvm_segment ldtr;
++
++	vmx_get_segment(vcpu, &ldtr, VCPU_SREG_LDTR);
++
++	if (ldtr.unusable)
++		return true;
++	if (ldtr.selector & SEGMENT_TI_MASK)	/* TI = 1 */
++		return false;
++	if (ldtr.type != 2)
++		return false;
++	if (!ldtr.present)
++		return false;
++
++	return true;
++}
++
++static bool cs_ss_rpl_check(struct kvm_vcpu *vcpu)
++{
++	struct kvm_segment cs, ss;
++
++	vmx_get_segment(vcpu, &cs, VCPU_SREG_CS);
++	vmx_get_segment(vcpu, &ss, VCPU_SREG_SS);
++
++	return ((cs.selector & SEGMENT_RPL_MASK) ==
++		 (ss.selector & SEGMENT_RPL_MASK));
++}
++
++/*
++ * Check if guest state is valid. Returns true if valid, false if
++ * not.
++ * We assume that registers are always usable
++ */
++static bool guest_state_valid(struct kvm_vcpu *vcpu)
++{
++	if (enable_unrestricted_guest)
++		return true;
++
++	/* real mode guest state checks */
++	if (!is_protmode(vcpu) || (vmx_get_rflags(vcpu) & X86_EFLAGS_VM)) {
++		if (!rmode_segment_valid(vcpu, VCPU_SREG_CS))
++			return false;
++		if (!rmode_segment_valid(vcpu, VCPU_SREG_SS))
++			return false;
++		if (!rmode_segment_valid(vcpu, VCPU_SREG_DS))
++			return false;
++		if (!rmode_segment_valid(vcpu, VCPU_SREG_ES))
++			return false;
++		if (!rmode_segment_valid(vcpu, VCPU_SREG_FS))
++			return false;
++		if (!rmode_segment_valid(vcpu, VCPU_SREG_GS))
++			return false;
++	} else {
++	/* protected mode guest state checks */
++		if (!cs_ss_rpl_check(vcpu))
++			return false;
++		if (!code_segment_valid(vcpu))
++			return false;
++		if (!stack_segment_valid(vcpu))
++			return false;
++		if (!data_segment_valid(vcpu, VCPU_SREG_DS))
++			return false;
++		if (!data_segment_valid(vcpu, VCPU_SREG_ES))
++			return false;
++		if (!data_segment_valid(vcpu, VCPU_SREG_FS))
++			return false;
++		if (!data_segment_valid(vcpu, VCPU_SREG_GS))
++			return false;
++		if (!tr_valid(vcpu))
++			return false;
++		if (!ldtr_valid(vcpu))
++			return false;
++	}
++	/* TODO:
++	 * - Add checks on RIP
++	 * - Add checks on RFLAGS
++	 */
++
++	return true;
++}
++
++static int init_rmode_tss(struct kvm *kvm)
++{
++	gfn_t fn;
++	u16 data = 0;
++	int idx, r;
++
++	idx = srcu_read_lock(&kvm->srcu);
++	fn = to_kvm_vmx(kvm)->tss_addr >> PAGE_SHIFT;
++	r = kvm_clear_guest_page(kvm, fn, 0, PAGE_SIZE);
++	if (r < 0)
++		goto out;
++	data = TSS_BASE_SIZE + TSS_REDIRECTION_SIZE;
++	r = kvm_write_guest_page(kvm, fn++, &data,
++			TSS_IOPB_BASE_OFFSET, sizeof(u16));
++	if (r < 0)
++		goto out;
++	r = kvm_clear_guest_page(kvm, fn++, 0, PAGE_SIZE);
++	if (r < 0)
++		goto out;
++	r = kvm_clear_guest_page(kvm, fn, 0, PAGE_SIZE);
++	if (r < 0)
++		goto out;
++	data = ~0;
++	r = kvm_write_guest_page(kvm, fn, &data,
++				 RMODE_TSS_SIZE - 2 * PAGE_SIZE - 1,
++				 sizeof(u8));
++out:
++	srcu_read_unlock(&kvm->srcu, idx);
++	return r;
++}
++
++static int init_rmode_identity_map(struct kvm *kvm)
++{
++	struct kvm_vmx *kvm_vmx = to_kvm_vmx(kvm);
++	int i, idx, r = 0;
++	kvm_pfn_t identity_map_pfn;
++	u32 tmp;
++
++	/* Protect kvm_vmx->ept_identity_pagetable_done. */
++	mutex_lock(&kvm->slots_lock);
++
++	if (likely(kvm_vmx->ept_identity_pagetable_done))
++		goto out2;
++
++	if (!kvm_vmx->ept_identity_map_addr)
++		kvm_vmx->ept_identity_map_addr = VMX_EPT_IDENTITY_PAGETABLE_ADDR;
++	identity_map_pfn = kvm_vmx->ept_identity_map_addr >> PAGE_SHIFT;
++
++	r = __x86_set_memory_region(kvm, IDENTITY_PAGETABLE_PRIVATE_MEMSLOT,
++				    kvm_vmx->ept_identity_map_addr, PAGE_SIZE);
++	if (r < 0)
++		goto out2;
++
++	idx = srcu_read_lock(&kvm->srcu);
++	r = kvm_clear_guest_page(kvm, identity_map_pfn, 0, PAGE_SIZE);
++	if (r < 0)
++		goto out;
++	/* Set up identity-mapping pagetable for EPT in real mode */
++	for (i = 0; i < PT32_ENT_PER_PAGE; i++) {
++		tmp = (i << 22) + (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER |
++			_PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_PSE);
++		r = kvm_write_guest_page(kvm, identity_map_pfn,
++				&tmp, i * sizeof(tmp), sizeof(tmp));
++		if (r < 0)
++			goto out;
++	}
++	kvm_vmx->ept_identity_pagetable_done = true;
++
++out:
++	srcu_read_unlock(&kvm->srcu, idx);
++
++out2:
++	mutex_unlock(&kvm->slots_lock);
++	return r;
++}
++
++static void seg_setup(int seg)
++{
++	const struct kvm_vmx_segment_field *sf = &kvm_vmx_segment_fields[seg];
++	unsigned int ar;
++
++	vmcs_write16(sf->selector, 0);
++	vmcs_writel(sf->base, 0);
++	vmcs_write32(sf->limit, 0xffff);
++	ar = 0x93;
++	if (seg == VCPU_SREG_CS)
++		ar |= 0x08; /* code segment */
++
++	vmcs_write32(sf->ar_bytes, ar);
++}
++
++static int alloc_apic_access_page(struct kvm *kvm)
++{
++	struct page *page;
++	int r = 0;
++
++	mutex_lock(&kvm->slots_lock);
++	if (kvm->arch.apic_access_page_done)
++		goto out;
++	r = __x86_set_memory_region(kvm, APIC_ACCESS_PAGE_PRIVATE_MEMSLOT,
++				    APIC_DEFAULT_PHYS_BASE, PAGE_SIZE);
++	if (r)
++		goto out;
++
++	page = gfn_to_page(kvm, APIC_DEFAULT_PHYS_BASE >> PAGE_SHIFT);
++	if (is_error_page(page)) {
++		r = -EFAULT;
++		goto out;
++	}
++
++	/*
++	 * Do not pin the page in memory, so that memory hot-unplug
++	 * is able to migrate it.
++	 */
++	put_page(page);
++	kvm->arch.apic_access_page_done = true;
++out:
++	mutex_unlock(&kvm->slots_lock);
++	return r;
++}
++
++int allocate_vpid(void)
++{
++	int vpid;
++
++	if (!enable_vpid)
++		return 0;
++	spin_lock(&vmx_vpid_lock);
++	vpid = find_first_zero_bit(vmx_vpid_bitmap, VMX_NR_VPIDS);
++	if (vpid < VMX_NR_VPIDS)
++		__set_bit(vpid, vmx_vpid_bitmap);
++	else
++		vpid = 0;
++	spin_unlock(&vmx_vpid_lock);
++	return vpid;
++}
++
++void free_vpid(int vpid)
++{
++	if (!enable_vpid || vpid == 0)
++		return;
++	spin_lock(&vmx_vpid_lock);
++	__clear_bit(vpid, vmx_vpid_bitmap);
++	spin_unlock(&vmx_vpid_lock);
++}
++
++static __always_inline void vmx_disable_intercept_for_msr(unsigned long *msr_bitmap,
++							  u32 msr, int type)
++{
++	int f = sizeof(unsigned long);
++
++	if (!cpu_has_vmx_msr_bitmap())
++		return;
++
++	if (static_branch_unlikely(&enable_evmcs))
++		evmcs_touch_msr_bitmap();
++
++	/*
++	 * See Intel PRM Vol. 3, 20.6.9 (MSR-Bitmap Address). Early manuals
++	 * have the write-low and read-high bitmap offsets the wrong way round.
++	 * We can control MSRs 0x00000000-0x00001fff and 0xc0000000-0xc0001fff.
++	 */
++	if (msr <= 0x1fff) {
++		if (type & MSR_TYPE_R)
++			/* read-low */
++			__clear_bit(msr, msr_bitmap + 0x000 / f);
++
++		if (type & MSR_TYPE_W)
++			/* write-low */
++			__clear_bit(msr, msr_bitmap + 0x800 / f);
++
++	} else if ((msr >= 0xc0000000) && (msr <= 0xc0001fff)) {
++		msr &= 0x1fff;
++		if (type & MSR_TYPE_R)
++			/* read-high */
++			__clear_bit(msr, msr_bitmap + 0x400 / f);
++
++		if (type & MSR_TYPE_W)
++			/* write-high */
++			__clear_bit(msr, msr_bitmap + 0xc00 / f);
++
++	}
++}
++
++static __always_inline void vmx_enable_intercept_for_msr(unsigned long *msr_bitmap,
++							 u32 msr, int type)
++{
++	int f = sizeof(unsigned long);
++
++	if (!cpu_has_vmx_msr_bitmap())
++		return;
++
++	if (static_branch_unlikely(&enable_evmcs))
++		evmcs_touch_msr_bitmap();
++
++	/*
++	 * See Intel PRM Vol. 3, 20.6.9 (MSR-Bitmap Address). Early manuals
++	 * have the write-low and read-high bitmap offsets the wrong way round.
++	 * We can control MSRs 0x00000000-0x00001fff and 0xc0000000-0xc0001fff.
++	 */
++	if (msr <= 0x1fff) {
++		if (type & MSR_TYPE_R)
++			/* read-low */
++			__set_bit(msr, msr_bitmap + 0x000 / f);
++
++		if (type & MSR_TYPE_W)
++			/* write-low */
++			__set_bit(msr, msr_bitmap + 0x800 / f);
++
++	} else if ((msr >= 0xc0000000) && (msr <= 0xc0001fff)) {
++		msr &= 0x1fff;
++		if (type & MSR_TYPE_R)
++			/* read-high */
++			__set_bit(msr, msr_bitmap + 0x400 / f);
++
++		if (type & MSR_TYPE_W)
++			/* write-high */
++			__set_bit(msr, msr_bitmap + 0xc00 / f);
++
++	}
++}
++
++static __always_inline void vmx_set_intercept_for_msr(unsigned long *msr_bitmap,
++			     			      u32 msr, int type, bool value)
++{
++	if (value)
++		vmx_enable_intercept_for_msr(msr_bitmap, msr, type);
++	else
++		vmx_disable_intercept_for_msr(msr_bitmap, msr, type);
++}
++
++static u8 vmx_msr_bitmap_mode(struct kvm_vcpu *vcpu)
++{
++	u8 mode = 0;
++
++	if (cpu_has_secondary_exec_ctrls() &&
++	    (secondary_exec_controls_get(to_vmx(vcpu)) &
++	     SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE)) {
++		mode |= MSR_BITMAP_MODE_X2APIC;
++		if (enable_apicv && kvm_vcpu_apicv_active(vcpu))
++			mode |= MSR_BITMAP_MODE_X2APIC_APICV;
++	}
++
++	return mode;
++}
++
++static void vmx_update_msr_bitmap_x2apic(unsigned long *msr_bitmap,
++					 u8 mode)
++{
++	int msr;
++
++	for (msr = 0x800; msr <= 0x8ff; msr += BITS_PER_LONG) {
++		unsigned word = msr / BITS_PER_LONG;
++		msr_bitmap[word] = (mode & MSR_BITMAP_MODE_X2APIC_APICV) ? 0 : ~0;
++		msr_bitmap[word + (0x800 / sizeof(long))] = ~0;
++	}
++
++	if (mode & MSR_BITMAP_MODE_X2APIC) {
++		/*
++		 * TPR reads and writes can be virtualized even if virtual interrupt
++		 * delivery is not in use.
++		 */
++		vmx_disable_intercept_for_msr(msr_bitmap, X2APIC_MSR(APIC_TASKPRI), MSR_TYPE_RW);
++		if (mode & MSR_BITMAP_MODE_X2APIC_APICV) {
++			vmx_enable_intercept_for_msr(msr_bitmap, X2APIC_MSR(APIC_TMCCT), MSR_TYPE_R);
++			vmx_disable_intercept_for_msr(msr_bitmap, X2APIC_MSR(APIC_EOI), MSR_TYPE_W);
++			vmx_disable_intercept_for_msr(msr_bitmap, X2APIC_MSR(APIC_SELF_IPI), MSR_TYPE_W);
++		}
++	}
++}
++
++void vmx_update_msr_bitmap(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	unsigned long *msr_bitmap = vmx->vmcs01.msr_bitmap;
++	u8 mode = vmx_msr_bitmap_mode(vcpu);
++	u8 changed = mode ^ vmx->msr_bitmap_mode;
++
++	if (!changed)
++		return;
++
++	if (changed & (MSR_BITMAP_MODE_X2APIC | MSR_BITMAP_MODE_X2APIC_APICV))
++		vmx_update_msr_bitmap_x2apic(msr_bitmap, mode);
++
++	vmx->msr_bitmap_mode = mode;
++}
++
++void pt_update_intercept_for_msr(struct vcpu_vmx *vmx)
++{
++	unsigned long *msr_bitmap = vmx->vmcs01.msr_bitmap;
++	bool flag = !(vmx->pt_desc.guest.ctl & RTIT_CTL_TRACEEN);
++	u32 i;
++
++	vmx_set_intercept_for_msr(msr_bitmap, MSR_IA32_RTIT_STATUS,
++							MSR_TYPE_RW, flag);
++	vmx_set_intercept_for_msr(msr_bitmap, MSR_IA32_RTIT_OUTPUT_BASE,
++							MSR_TYPE_RW, flag);
++	vmx_set_intercept_for_msr(msr_bitmap, MSR_IA32_RTIT_OUTPUT_MASK,
++							MSR_TYPE_RW, flag);
++	vmx_set_intercept_for_msr(msr_bitmap, MSR_IA32_RTIT_CR3_MATCH,
++							MSR_TYPE_RW, flag);
++	for (i = 0; i < vmx->pt_desc.addr_range; i++) {
++		vmx_set_intercept_for_msr(msr_bitmap,
++			MSR_IA32_RTIT_ADDR0_A + i * 2, MSR_TYPE_RW, flag);
++		vmx_set_intercept_for_msr(msr_bitmap,
++			MSR_IA32_RTIT_ADDR0_B + i * 2, MSR_TYPE_RW, flag);
++	}
++}
++
++static bool vmx_get_enable_apicv(struct kvm *kvm)
++{
++	return enable_apicv;
++}
++
++static bool vmx_guest_apic_has_interrupt(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	void *vapic_page;
++	u32 vppr;
++	int rvi;
++
++	if (WARN_ON_ONCE(!is_guest_mode(vcpu)) ||
++		!nested_cpu_has_vid(get_vmcs12(vcpu)) ||
++		WARN_ON_ONCE(!vmx->nested.virtual_apic_map.gfn))
++		return false;
++
++	rvi = vmx_get_rvi();
++
++	vapic_page = vmx->nested.virtual_apic_map.hva;
++	vppr = *((u32 *)(vapic_page + APIC_PROCPRI));
++
++	return ((rvi & 0xf0) > (vppr & 0xf0));
++}
++
++static inline bool kvm_vcpu_trigger_posted_interrupt(struct kvm_vcpu *vcpu,
++						     bool nested)
++{
++#ifdef CONFIG_SMP
++	int pi_vec = nested ? POSTED_INTR_NESTED_VECTOR : POSTED_INTR_VECTOR;
++
++	if (vcpu->mode == IN_GUEST_MODE) {
++		/*
++		 * The vector of interrupt to be delivered to vcpu had
++		 * been set in PIR before this function.
++		 *
++		 * Following cases will be reached in this block, and
++		 * we always send a notification event in all cases as
++		 * explained below.
++		 *
++		 * Case 1: vcpu keeps in non-root mode. Sending a
++		 * notification event posts the interrupt to vcpu.
++		 *
++		 * Case 2: vcpu exits to root mode and is still
++		 * runnable. PIR will be synced to vIRR before the
++		 * next vcpu entry. Sending a notification event in
++		 * this case has no effect, as vcpu is not in root
++		 * mode.
++		 *
++		 * Case 3: vcpu exits to root mode and is blocked.
++		 * vcpu_block() has already synced PIR to vIRR and
++		 * never blocks vcpu if vIRR is not cleared. Therefore,
++		 * a blocked vcpu here does not wait for any requested
++		 * interrupts in PIR, and sending a notification event
++		 * which has no effect is safe here.
++		 */
++
++		apic->send_IPI_mask(get_cpu_mask(vcpu->cpu), pi_vec);
++		return true;
++	}
++#endif
++	return false;
++}
++
++static int vmx_deliver_nested_posted_interrupt(struct kvm_vcpu *vcpu,
++						int vector)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++
++	if (is_guest_mode(vcpu) &&
++	    vector == vmx->nested.posted_intr_nv) {
++		/*
++		 * If a posted intr is not recognized by hardware,
++		 * we will accomplish it in the next vmentry.
++		 */
++		vmx->nested.pi_pending = true;
++		kvm_make_request(KVM_REQ_EVENT, vcpu);
++		/* the PIR and ON have been set by L1. */
++		if (!kvm_vcpu_trigger_posted_interrupt(vcpu, true))
++			kvm_vcpu_kick(vcpu);
++		return 0;
++	}
++	return -1;
++}
++/*
++ * Send interrupt to vcpu via posted interrupt way.
++ * 1. If target vcpu is running(non-root mode), send posted interrupt
++ * notification to vcpu and hardware will sync PIR to vIRR atomically.
++ * 2. If target vcpu isn't running(root mode), kick it to pick up the
++ * interrupt from PIR in next vmentry.
++ */
++static void vmx_deliver_posted_interrupt(struct kvm_vcpu *vcpu, int vector)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	int r;
++
++	r = vmx_deliver_nested_posted_interrupt(vcpu, vector);
++	if (!r)
++		return;
++
++	if (pi_test_and_set_pir(vector, &vmx->pi_desc))
++		return;
++
++	/* If a previous notification has sent the IPI, nothing to do.  */
++	if (pi_test_and_set_on(&vmx->pi_desc))
++		return;
++
++	if (!kvm_vcpu_trigger_posted_interrupt(vcpu, false))
++		kvm_vcpu_kick(vcpu);
++}
++
++/*
++ * Set up the vmcs's constant host-state fields, i.e., host-state fields that
++ * will not change in the lifetime of the guest.
++ * Note that host-state that does change is set elsewhere. E.g., host-state
++ * that is set differently for each CPU is set in vmx_vcpu_load(), not here.
++ */
++void vmx_set_constant_host_state(struct vcpu_vmx *vmx)
++{
++	u32 low32, high32;
++	unsigned long tmpl;
++	unsigned long cr0, cr3, cr4;
++
++	cr0 = read_cr0();
++	WARN_ON(cr0 & X86_CR0_TS);
++	vmcs_writel(HOST_CR0, cr0);  /* 22.2.3 */
++
++	/*
++	 * Save the most likely value for this task's CR3 in the VMCS.
++	 * We can't use __get_current_cr3_fast() because we're not atomic.
++	 */
++	cr3 = __read_cr3();
++	vmcs_writel(HOST_CR3, cr3);		/* 22.2.3  FIXME: shadow tables */
++	vmx->loaded_vmcs->host_state.cr3 = cr3;
++
++	/* Save the most likely value for this task's CR4 in the VMCS. */
++	cr4 = cr4_read_shadow();
++	vmcs_writel(HOST_CR4, cr4);			/* 22.2.3, 22.2.5 */
++	vmx->loaded_vmcs->host_state.cr4 = cr4;
++
++	vmcs_write16(HOST_CS_SELECTOR, __KERNEL_CS);  /* 22.2.4 */
++#ifdef CONFIG_X86_64
++	/*
++	 * Load null selectors, so we can avoid reloading them in
++	 * vmx_prepare_switch_to_host(), in case userspace uses
++	 * the null selectors too (the expected case).
++	 */
++	vmcs_write16(HOST_DS_SELECTOR, 0);
++	vmcs_write16(HOST_ES_SELECTOR, 0);
++#else
++	vmcs_write16(HOST_DS_SELECTOR, __KERNEL_DS);  /* 22.2.4 */
++	vmcs_write16(HOST_ES_SELECTOR, __KERNEL_DS);  /* 22.2.4 */
++#endif
++	vmcs_write16(HOST_SS_SELECTOR, __KERNEL_DS);  /* 22.2.4 */
++	vmcs_write16(HOST_TR_SELECTOR, GDT_ENTRY_TSS*8);  /* 22.2.4 */
++
++	vmcs_writel(HOST_IDTR_BASE, host_idt_base);   /* 22.2.4 */
++
++	vmcs_writel(HOST_RIP, (unsigned long)vmx_vmexit); /* 22.2.5 */
++
++	rdmsr(MSR_IA32_SYSENTER_CS, low32, high32);
++	vmcs_write32(HOST_IA32_SYSENTER_CS, low32);
++	rdmsrl(MSR_IA32_SYSENTER_EIP, tmpl);
++	vmcs_writel(HOST_IA32_SYSENTER_EIP, tmpl);   /* 22.2.3 */
++
++	if (vmcs_config.vmexit_ctrl & VM_EXIT_LOAD_IA32_PAT) {
++		rdmsr(MSR_IA32_CR_PAT, low32, high32);
++		vmcs_write64(HOST_IA32_PAT, low32 | ((u64) high32 << 32));
++	}
++
++	if (cpu_has_load_ia32_efer())
++		vmcs_write64(HOST_IA32_EFER, host_efer);
++}
++
++void set_cr4_guest_host_mask(struct vcpu_vmx *vmx)
++{
++	vmx->vcpu.arch.cr4_guest_owned_bits = KVM_CR4_GUEST_OWNED_BITS;
++	if (enable_ept)
++		vmx->vcpu.arch.cr4_guest_owned_bits |= X86_CR4_PGE;
++	if (is_guest_mode(&vmx->vcpu))
++		vmx->vcpu.arch.cr4_guest_owned_bits &=
++			~get_vmcs12(&vmx->vcpu)->cr4_guest_host_mask;
++	vmcs_writel(CR4_GUEST_HOST_MASK, ~vmx->vcpu.arch.cr4_guest_owned_bits);
++}
++
++u32 vmx_pin_based_exec_ctrl(struct vcpu_vmx *vmx)
++{
++	u32 pin_based_exec_ctrl = vmcs_config.pin_based_exec_ctrl;
++
++	if (!kvm_vcpu_apicv_active(&vmx->vcpu))
++		pin_based_exec_ctrl &= ~PIN_BASED_POSTED_INTR;
++
++	if (!enable_vnmi)
++		pin_based_exec_ctrl &= ~PIN_BASED_VIRTUAL_NMIS;
++
++	if (!enable_preemption_timer)
++		pin_based_exec_ctrl &= ~PIN_BASED_VMX_PREEMPTION_TIMER;
++
++	return pin_based_exec_ctrl;
++}
++
++static void vmx_refresh_apicv_exec_ctrl(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++
++	pin_controls_set(vmx, vmx_pin_based_exec_ctrl(vmx));
++	if (cpu_has_secondary_exec_ctrls()) {
++		if (kvm_vcpu_apicv_active(vcpu))
++			secondary_exec_controls_setbit(vmx,
++				      SECONDARY_EXEC_APIC_REGISTER_VIRT |
++				      SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY);
++		else
++			secondary_exec_controls_clearbit(vmx,
++					SECONDARY_EXEC_APIC_REGISTER_VIRT |
++					SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY);
++	}
++
++	if (cpu_has_vmx_msr_bitmap())
++		vmx_update_msr_bitmap(vcpu);
++}
++
++u32 vmx_exec_control(struct vcpu_vmx *vmx)
++{
++	u32 exec_control = vmcs_config.cpu_based_exec_ctrl;
++
++	if (vmx->vcpu.arch.switch_db_regs & KVM_DEBUGREG_WONT_EXIT)
++		exec_control &= ~CPU_BASED_MOV_DR_EXITING;
++
++	if (!cpu_need_tpr_shadow(&vmx->vcpu)) {
++		exec_control &= ~CPU_BASED_TPR_SHADOW;
++#ifdef CONFIG_X86_64
++		exec_control |= CPU_BASED_CR8_STORE_EXITING |
++				CPU_BASED_CR8_LOAD_EXITING;
++#endif
++	}
++	if (!enable_ept)
++		exec_control |= CPU_BASED_CR3_STORE_EXITING |
++				CPU_BASED_CR3_LOAD_EXITING  |
++				CPU_BASED_INVLPG_EXITING;
++	if (kvm_mwait_in_guest(vmx->vcpu.kvm))
++		exec_control &= ~(CPU_BASED_MWAIT_EXITING |
++				CPU_BASED_MONITOR_EXITING);
++	if (kvm_hlt_in_guest(vmx->vcpu.kvm))
++		exec_control &= ~CPU_BASED_HLT_EXITING;
++	return exec_control;
++}
++
++
++static void vmx_compute_secondary_exec_control(struct vcpu_vmx *vmx)
++{
++	struct kvm_vcpu *vcpu = &vmx->vcpu;
++
++	u32 exec_control = vmcs_config.cpu_based_2nd_exec_ctrl;
++
++	if (pt_mode == PT_MODE_SYSTEM)
++		exec_control &= ~(SECONDARY_EXEC_PT_USE_GPA | SECONDARY_EXEC_PT_CONCEAL_VMX);
++	if (!cpu_need_virtualize_apic_accesses(vcpu))
++		exec_control &= ~SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES;
++	if (vmx->vpid == 0)
++		exec_control &= ~SECONDARY_EXEC_ENABLE_VPID;
++	if (!enable_ept) {
++		exec_control &= ~SECONDARY_EXEC_ENABLE_EPT;
++		enable_unrestricted_guest = 0;
++	}
++	if (!enable_unrestricted_guest)
++		exec_control &= ~SECONDARY_EXEC_UNRESTRICTED_GUEST;
++	if (kvm_pause_in_guest(vmx->vcpu.kvm))
++		exec_control &= ~SECONDARY_EXEC_PAUSE_LOOP_EXITING;
++	if (!kvm_vcpu_apicv_active(vcpu))
++		exec_control &= ~(SECONDARY_EXEC_APIC_REGISTER_VIRT |
++				  SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY);
++	exec_control &= ~SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE;
++
++	/* SECONDARY_EXEC_DESC is enabled/disabled on writes to CR4.UMIP,
++	 * in vmx_set_cr4.  */
++	exec_control &= ~SECONDARY_EXEC_DESC;
++
++	/* SECONDARY_EXEC_SHADOW_VMCS is enabled when L1 executes VMPTRLD
++	   (handle_vmptrld).
++	   We can NOT enable shadow_vmcs here because we don't have yet
++	   a current VMCS12
++	*/
++	exec_control &= ~SECONDARY_EXEC_SHADOW_VMCS;
++
++	if (!enable_pml)
++		exec_control &= ~SECONDARY_EXEC_ENABLE_PML;
++
++	if (vmx_xsaves_supported()) {
++		/* Exposing XSAVES only when XSAVE is exposed */
++		bool xsaves_enabled =
++			guest_cpuid_has(vcpu, X86_FEATURE_XSAVE) &&
++			guest_cpuid_has(vcpu, X86_FEATURE_XSAVES);
++
++		vcpu->arch.xsaves_enabled = xsaves_enabled;
++
++		if (!xsaves_enabled)
++			exec_control &= ~SECONDARY_EXEC_XSAVES;
++
++		if (nested) {
++			if (xsaves_enabled)
++				vmx->nested.msrs.secondary_ctls_high |=
++					SECONDARY_EXEC_XSAVES;
++			else
++				vmx->nested.msrs.secondary_ctls_high &=
++					~SECONDARY_EXEC_XSAVES;
++		}
++	}
++
++	if (vmx_rdtscp_supported()) {
++		bool rdtscp_enabled = guest_cpuid_has(vcpu, X86_FEATURE_RDTSCP);
++		if (!rdtscp_enabled)
++			exec_control &= ~SECONDARY_EXEC_RDTSCP;
++
++		if (nested) {
++			if (rdtscp_enabled)
++				vmx->nested.msrs.secondary_ctls_high |=
++					SECONDARY_EXEC_RDTSCP;
++			else
++				vmx->nested.msrs.secondary_ctls_high &=
++					~SECONDARY_EXEC_RDTSCP;
++		}
++	}
++
++	if (vmx_invpcid_supported()) {
++		/* Exposing INVPCID only when PCID is exposed */
++		bool invpcid_enabled =
++			guest_cpuid_has(vcpu, X86_FEATURE_INVPCID) &&
++			guest_cpuid_has(vcpu, X86_FEATURE_PCID);
++
++		if (!invpcid_enabled) {
++			exec_control &= ~SECONDARY_EXEC_ENABLE_INVPCID;
++			guest_cpuid_clear(vcpu, X86_FEATURE_INVPCID);
++		}
++
++		if (nested) {
++			if (invpcid_enabled)
++				vmx->nested.msrs.secondary_ctls_high |=
++					SECONDARY_EXEC_ENABLE_INVPCID;
++			else
++				vmx->nested.msrs.secondary_ctls_high &=
++					~SECONDARY_EXEC_ENABLE_INVPCID;
++		}
++	}
++
++	if (vmx_rdrand_supported()) {
++		bool rdrand_enabled = guest_cpuid_has(vcpu, X86_FEATURE_RDRAND);
++		if (rdrand_enabled)
++			exec_control &= ~SECONDARY_EXEC_RDRAND_EXITING;
++
++		if (nested) {
++			if (rdrand_enabled)
++				vmx->nested.msrs.secondary_ctls_high |=
++					SECONDARY_EXEC_RDRAND_EXITING;
++			else
++				vmx->nested.msrs.secondary_ctls_high &=
++					~SECONDARY_EXEC_RDRAND_EXITING;
++		}
++	}
++
++	if (vmx_rdseed_supported()) {
++		bool rdseed_enabled = guest_cpuid_has(vcpu, X86_FEATURE_RDSEED);
++		if (rdseed_enabled)
++			exec_control &= ~SECONDARY_EXEC_RDSEED_EXITING;
++
++		if (nested) {
++			if (rdseed_enabled)
++				vmx->nested.msrs.secondary_ctls_high |=
++					SECONDARY_EXEC_RDSEED_EXITING;
++			else
++				vmx->nested.msrs.secondary_ctls_high &=
++					~SECONDARY_EXEC_RDSEED_EXITING;
++		}
++	}
++
++	if (vmx_waitpkg_supported()) {
++		bool waitpkg_enabled =
++			guest_cpuid_has(vcpu, X86_FEATURE_WAITPKG);
++
++		if (!waitpkg_enabled)
++			exec_control &= ~SECONDARY_EXEC_ENABLE_USR_WAIT_PAUSE;
++
++		if (nested) {
++			if (waitpkg_enabled)
++				vmx->nested.msrs.secondary_ctls_high |=
++					SECONDARY_EXEC_ENABLE_USR_WAIT_PAUSE;
++			else
++				vmx->nested.msrs.secondary_ctls_high &=
++					~SECONDARY_EXEC_ENABLE_USR_WAIT_PAUSE;
++		}
++	}
++
++	vmx->secondary_exec_control = exec_control;
++}
++
++static void ept_set_mmio_spte_mask(void)
++{
++	/*
++	 * EPT Misconfigurations can be generated if the value of bits 2:0
++	 * of an EPT paging-structure entry is 110b (write/execute).
++	 */
++	kvm_mmu_set_mmio_spte_mask(VMX_EPT_RWX_MASK,
++				   VMX_EPT_MISCONFIG_WX_VALUE, 0);
++}
++
++#define VMX_XSS_EXIT_BITMAP 0
++
++/*
++ * Noting that the initialization of Guest-state Area of VMCS is in
++ * vmx_vcpu_reset().
++ */
++static void init_vmcs(struct vcpu_vmx *vmx)
++{
++	if (nested)
++		nested_vmx_set_vmcs_shadowing_bitmap();
++
++	if (cpu_has_vmx_msr_bitmap())
++		vmcs_write64(MSR_BITMAP, __pa(vmx->vmcs01.msr_bitmap));
++
++	vmcs_write64(VMCS_LINK_POINTER, -1ull); /* 22.3.1.5 */
++
++	/* Control */
++	pin_controls_set(vmx, vmx_pin_based_exec_ctrl(vmx));
++
++	exec_controls_set(vmx, vmx_exec_control(vmx));
++
++	if (cpu_has_secondary_exec_ctrls()) {
++		vmx_compute_secondary_exec_control(vmx);
++		secondary_exec_controls_set(vmx, vmx->secondary_exec_control);
++	}
++
++	if (kvm_vcpu_apicv_active(&vmx->vcpu)) {
++		vmcs_write64(EOI_EXIT_BITMAP0, 0);
++		vmcs_write64(EOI_EXIT_BITMAP1, 0);
++		vmcs_write64(EOI_EXIT_BITMAP2, 0);
++		vmcs_write64(EOI_EXIT_BITMAP3, 0);
++
++		vmcs_write16(GUEST_INTR_STATUS, 0);
++
++		vmcs_write16(POSTED_INTR_NV, POSTED_INTR_VECTOR);
++		vmcs_write64(POSTED_INTR_DESC_ADDR, __pa((&vmx->pi_desc)));
++	}
++
++	if (!kvm_pause_in_guest(vmx->vcpu.kvm)) {
++		vmcs_write32(PLE_GAP, ple_gap);
++		vmx->ple_window = ple_window;
++		vmx->ple_window_dirty = true;
++	}
++
++	vmcs_write32(PAGE_FAULT_ERROR_CODE_MASK, 0);
++	vmcs_write32(PAGE_FAULT_ERROR_CODE_MATCH, 0);
++	vmcs_write32(CR3_TARGET_COUNT, 0);           /* 22.2.1 */
++
++	vmcs_write16(HOST_FS_SELECTOR, 0);            /* 22.2.4 */
++	vmcs_write16(HOST_GS_SELECTOR, 0);            /* 22.2.4 */
++	vmx_set_constant_host_state(vmx);
++	vmcs_writel(HOST_FS_BASE, 0); /* 22.2.4 */
++	vmcs_writel(HOST_GS_BASE, 0); /* 22.2.4 */
++
++	if (cpu_has_vmx_vmfunc())
++		vmcs_write64(VM_FUNCTION_CONTROL, 0);
++
++	vmcs_write32(VM_EXIT_MSR_STORE_COUNT, 0);
++	vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, 0);
++	vmcs_write64(VM_EXIT_MSR_LOAD_ADDR, __pa(vmx->msr_autoload.host.val));
++	vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, 0);
++	vmcs_write64(VM_ENTRY_MSR_LOAD_ADDR, __pa(vmx->msr_autoload.guest.val));
++
++	if (vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_IA32_PAT)
++		vmcs_write64(GUEST_IA32_PAT, vmx->vcpu.arch.pat);
++
++	vm_exit_controls_set(vmx, vmx_vmexit_ctrl());
++
++	/* 22.2.1, 20.8.1 */
++	vm_entry_controls_set(vmx, vmx_vmentry_ctrl());
++
++	vmx->vcpu.arch.cr0_guest_owned_bits = X86_CR0_TS;
++	vmcs_writel(CR0_GUEST_HOST_MASK, ~X86_CR0_TS);
++
++	set_cr4_guest_host_mask(vmx);
++
++	if (vmx->vpid != 0)
++		vmcs_write16(VIRTUAL_PROCESSOR_ID, vmx->vpid);
++
++	if (vmx_xsaves_supported())
++		vmcs_write64(XSS_EXIT_BITMAP, VMX_XSS_EXIT_BITMAP);
++
++	if (enable_pml) {
++		vmcs_write64(PML_ADDRESS, page_to_phys(vmx->pml_pg));
++		vmcs_write16(GUEST_PML_INDEX, PML_ENTITY_NUM - 1);
++	}
++
++	if (cpu_has_vmx_encls_vmexit())
++		vmcs_write64(ENCLS_EXITING_BITMAP, -1ull);
++
++	if (pt_mode == PT_MODE_HOST_GUEST) {
++		memset(&vmx->pt_desc, 0, sizeof(vmx->pt_desc));
++		/* Bit[6~0] are forced to 1, writes are ignored. */
++		vmx->pt_desc.guest.output_mask = 0x7F;
++		vmcs_write64(GUEST_IA32_RTIT_CTL, 0);
++	}
++}
++
++static void vmx_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	struct msr_data apic_base_msr;
++	u64 cr0;
++
++	vmx->rmode.vm86_active = 0;
++	vmx->spec_ctrl = 0;
++
++	vmx->msr_ia32_umwait_control = 0;
++
++	vcpu->arch.microcode_version = 0x100000000ULL;
++	vmx->vcpu.arch.regs[VCPU_REGS_RDX] = get_rdx_init_val();
++	vmx->hv_deadline_tsc = -1;
++	kvm_set_cr8(vcpu, 0);
++
++	if (!init_event) {
++		apic_base_msr.data = APIC_DEFAULT_PHYS_BASE |
++				     MSR_IA32_APICBASE_ENABLE;
++		if (kvm_vcpu_is_reset_bsp(vcpu))
++			apic_base_msr.data |= MSR_IA32_APICBASE_BSP;
++		apic_base_msr.host_initiated = true;
++		kvm_set_apic_base(vcpu, &apic_base_msr);
++	}
++
++	vmx_segment_cache_clear(vmx);
++
++	seg_setup(VCPU_SREG_CS);
++	vmcs_write16(GUEST_CS_SELECTOR, 0xf000);
++	vmcs_writel(GUEST_CS_BASE, 0xffff0000ul);
++
++	seg_setup(VCPU_SREG_DS);
++	seg_setup(VCPU_SREG_ES);
++	seg_setup(VCPU_SREG_FS);
++	seg_setup(VCPU_SREG_GS);
++	seg_setup(VCPU_SREG_SS);
++
++	vmcs_write16(GUEST_TR_SELECTOR, 0);
++	vmcs_writel(GUEST_TR_BASE, 0);
++	vmcs_write32(GUEST_TR_LIMIT, 0xffff);
++	vmcs_write32(GUEST_TR_AR_BYTES, 0x008b);
++
++	vmcs_write16(GUEST_LDTR_SELECTOR, 0);
++	vmcs_writel(GUEST_LDTR_BASE, 0);
++	vmcs_write32(GUEST_LDTR_LIMIT, 0xffff);
++	vmcs_write32(GUEST_LDTR_AR_BYTES, 0x00082);
++
++	if (!init_event) {
++		vmcs_write32(GUEST_SYSENTER_CS, 0);
++		vmcs_writel(GUEST_SYSENTER_ESP, 0);
++		vmcs_writel(GUEST_SYSENTER_EIP, 0);
++		vmcs_write64(GUEST_IA32_DEBUGCTL, 0);
++	}
++
++	kvm_set_rflags(vcpu, X86_EFLAGS_FIXED);
++	kvm_rip_write(vcpu, 0xfff0);
++
++	vmcs_writel(GUEST_GDTR_BASE, 0);
++	vmcs_write32(GUEST_GDTR_LIMIT, 0xffff);
++
++	vmcs_writel(GUEST_IDTR_BASE, 0);
++	vmcs_write32(GUEST_IDTR_LIMIT, 0xffff);
++
++	vmcs_write32(GUEST_ACTIVITY_STATE, GUEST_ACTIVITY_ACTIVE);
++	vmcs_write32(GUEST_INTERRUPTIBILITY_INFO, 0);
++	vmcs_writel(GUEST_PENDING_DBG_EXCEPTIONS, 0);
++	if (kvm_mpx_supported())
++		vmcs_write64(GUEST_BNDCFGS, 0);
++
++	setup_msrs(vmx);
++
++	vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, 0);  /* 22.2.1 */
++
++	if (cpu_has_vmx_tpr_shadow() && !init_event) {
++		vmcs_write64(VIRTUAL_APIC_PAGE_ADDR, 0);
++		if (cpu_need_tpr_shadow(vcpu))
++			vmcs_write64(VIRTUAL_APIC_PAGE_ADDR,
++				     __pa(vcpu->arch.apic->regs));
++		vmcs_write32(TPR_THRESHOLD, 0);
++	}
++
++	kvm_make_request(KVM_REQ_APIC_PAGE_RELOAD, vcpu);
++
++	cr0 = X86_CR0_NW | X86_CR0_CD | X86_CR0_ET;
++	vmx->vcpu.arch.cr0 = cr0;
++	vmx_set_cr0(vcpu, cr0); /* enter rmode */
++	vmx_set_cr4(vcpu, 0);
++	vmx_set_efer(vcpu, 0);
++
++	update_exception_bitmap(vcpu);
++
++	vpid_sync_context(vmx->vpid);
++	if (init_event)
++		vmx_clear_hlt(vcpu);
++}
++
++static void enable_irq_window(struct kvm_vcpu *vcpu)
++{
++	exec_controls_setbit(to_vmx(vcpu), CPU_BASED_INTR_WINDOW_EXITING);
++}
++
++static void enable_nmi_window(struct kvm_vcpu *vcpu)
++{
++	if (!enable_vnmi ||
++	    vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & GUEST_INTR_STATE_STI) {
++		enable_irq_window(vcpu);
++		return;
++	}
++
++	exec_controls_setbit(to_vmx(vcpu), CPU_BASED_NMI_WINDOW_EXITING);
++}
++
++static void vmx_inject_irq(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	uint32_t intr;
++	int irq = vcpu->arch.interrupt.nr;
++
++	trace_kvm_inj_virq(irq);
++
++	++vcpu->stat.irq_injections;
++	if (vmx->rmode.vm86_active) {
++		int inc_eip = 0;
++		if (vcpu->arch.interrupt.soft)
++			inc_eip = vcpu->arch.event_exit_inst_len;
++		kvm_inject_realmode_interrupt(vcpu, irq, inc_eip);
++		return;
++	}
++	intr = irq | INTR_INFO_VALID_MASK;
++	if (vcpu->arch.interrupt.soft) {
++		intr |= INTR_TYPE_SOFT_INTR;
++		vmcs_write32(VM_ENTRY_INSTRUCTION_LEN,
++			     vmx->vcpu.arch.event_exit_inst_len);
++	} else
++		intr |= INTR_TYPE_EXT_INTR;
++	vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, intr);
++
++	vmx_clear_hlt(vcpu);
++}
++
++static void vmx_inject_nmi(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++
++	if (!enable_vnmi) {
++		/*
++		 * Tracking the NMI-blocked state in software is built upon
++		 * finding the next open IRQ window. This, in turn, depends on
++		 * well-behaving guests: They have to keep IRQs disabled at
++		 * least as long as the NMI handler runs. Otherwise we may
++		 * cause NMI nesting, maybe breaking the guest. But as this is
++		 * highly unlikely, we can live with the residual risk.
++		 */
++		vmx->loaded_vmcs->soft_vnmi_blocked = 1;
++		vmx->loaded_vmcs->vnmi_blocked_time = 0;
++	}
++
++	++vcpu->stat.nmi_injections;
++	vmx->loaded_vmcs->nmi_known_unmasked = false;
++
++	if (vmx->rmode.vm86_active) {
++		kvm_inject_realmode_interrupt(vcpu, NMI_VECTOR, 0);
++		return;
++	}
++
++	vmcs_write32(VM_ENTRY_INTR_INFO_FIELD,
++			INTR_TYPE_NMI_INTR | INTR_INFO_VALID_MASK | NMI_VECTOR);
++
++	vmx_clear_hlt(vcpu);
++}
++
++bool vmx_get_nmi_mask(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	bool masked;
++
++	if (!enable_vnmi)
++		return vmx->loaded_vmcs->soft_vnmi_blocked;
++	if (vmx->loaded_vmcs->nmi_known_unmasked)
++		return false;
++	masked = vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & GUEST_INTR_STATE_NMI;
++	vmx->loaded_vmcs->nmi_known_unmasked = !masked;
++	return masked;
++}
++
++void vmx_set_nmi_mask(struct kvm_vcpu *vcpu, bool masked)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++
++	if (!enable_vnmi) {
++		if (vmx->loaded_vmcs->soft_vnmi_blocked != masked) {
++			vmx->loaded_vmcs->soft_vnmi_blocked = masked;
++			vmx->loaded_vmcs->vnmi_blocked_time = 0;
++		}
++	} else {
++		vmx->loaded_vmcs->nmi_known_unmasked = !masked;
++		if (masked)
++			vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO,
++				      GUEST_INTR_STATE_NMI);
++		else
++			vmcs_clear_bits(GUEST_INTERRUPTIBILITY_INFO,
++					GUEST_INTR_STATE_NMI);
++	}
++}
++
++static int vmx_nmi_allowed(struct kvm_vcpu *vcpu)
++{
++	if (to_vmx(vcpu)->nested.nested_run_pending)
++		return 0;
++
++	if (!enable_vnmi &&
++	    to_vmx(vcpu)->loaded_vmcs->soft_vnmi_blocked)
++		return 0;
++
++	return	!(vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) &
++		  (GUEST_INTR_STATE_MOV_SS | GUEST_INTR_STATE_STI
++		   | GUEST_INTR_STATE_NMI));
++}
++
++static int vmx_interrupt_allowed(struct kvm_vcpu *vcpu)
++{
++	return (!to_vmx(vcpu)->nested.nested_run_pending &&
++		vmcs_readl(GUEST_RFLAGS) & X86_EFLAGS_IF) &&
++		!(vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) &
++			(GUEST_INTR_STATE_STI | GUEST_INTR_STATE_MOV_SS));
++}
++
++static int vmx_set_tss_addr(struct kvm *kvm, unsigned int addr)
++{
++	int ret;
++
++	if (enable_unrestricted_guest)
++		return 0;
++
++	ret = x86_set_memory_region(kvm, TSS_PRIVATE_MEMSLOT, addr,
++				    PAGE_SIZE * 3);
++	if (ret)
++		return ret;
++	to_kvm_vmx(kvm)->tss_addr = addr;
++	return init_rmode_tss(kvm);
++}
++
++static int vmx_set_identity_map_addr(struct kvm *kvm, u64 ident_addr)
++{
++	to_kvm_vmx(kvm)->ept_identity_map_addr = ident_addr;
++	return 0;
++}
++
++static bool rmode_exception(struct kvm_vcpu *vcpu, int vec)
++{
++	switch (vec) {
++	case BP_VECTOR:
++		/*
++		 * Update instruction length as we may reinject the exception
++		 * from user space while in guest debugging mode.
++		 */
++		to_vmx(vcpu)->vcpu.arch.event_exit_inst_len =
++			vmcs_read32(VM_EXIT_INSTRUCTION_LEN);
++		if (vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP)
++			return false;
++		/* fall through */
++	case DB_VECTOR:
++		if (vcpu->guest_debug &
++			(KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP))
++			return false;
++		/* fall through */
++	case DE_VECTOR:
++	case OF_VECTOR:
++	case BR_VECTOR:
++	case UD_VECTOR:
++	case DF_VECTOR:
++	case SS_VECTOR:
++	case GP_VECTOR:
++	case MF_VECTOR:
++		return true;
++	break;
++	}
++	return false;
++}
++
++static int handle_rmode_exception(struct kvm_vcpu *vcpu,
++				  int vec, u32 err_code)
++{
++	/*
++	 * Instruction with address size override prefix opcode 0x67
++	 * Cause the #SS fault with 0 error code in VM86 mode.
++	 */
++	if (((vec == GP_VECTOR) || (vec == SS_VECTOR)) && err_code == 0) {
++		if (kvm_emulate_instruction(vcpu, 0)) {
++			if (vcpu->arch.halt_request) {
++				vcpu->arch.halt_request = 0;
++				return kvm_vcpu_halt(vcpu);
++			}
++			return 1;
++		}
++		return 0;
++	}
++
++	/*
++	 * Forward all other exceptions that are valid in real mode.
++	 * FIXME: Breaks guest debugging in real mode, needs to be fixed with
++	 *        the required debugging infrastructure rework.
++	 */
++	kvm_queue_exception(vcpu, vec);
++	return 1;
++}
++
++/*
++ * Trigger machine check on the host. We assume all the MSRs are already set up
++ * by the CPU and that we still run on the same CPU as the MCE occurred on.
++ * We pass a fake environment to the machine check handler because we want
++ * the guest to be always treated like user space, no matter what context
++ * it used internally.
++ */
++static void kvm_machine_check(void)
++{
++#if defined(CONFIG_X86_MCE) && defined(CONFIG_X86_64)
++	struct pt_regs regs = {
++		.cs = 3, /* Fake ring 3 no matter what the guest ran on */
++		.flags = X86_EFLAGS_IF,
++	};
++
++	do_machine_check(&regs, 0);
++#endif
++}
++
++static int handle_machine_check(struct kvm_vcpu *vcpu)
++{
++	/* handled by vmx_vcpu_run() */
++	return 1;
++}
++
++static int handle_exception_nmi(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	struct kvm_run *kvm_run = vcpu->run;
++	u32 intr_info, ex_no, error_code;
++	unsigned long cr2, rip, dr6;
++	u32 vect_info;
++
++	vect_info = vmx->idt_vectoring_info;
++	intr_info = vmx->exit_intr_info;
++
++	if (is_machine_check(intr_info) || is_nmi(intr_info))
++		return 1; /* handled by handle_exception_nmi_irqoff() */
++
++	if (is_invalid_opcode(intr_info))
++		return handle_ud(vcpu);
++
++	error_code = 0;
++	if (intr_info & INTR_INFO_DELIVER_CODE_MASK)
++		error_code = vmcs_read32(VM_EXIT_INTR_ERROR_CODE);
++
++	if (!vmx->rmode.vm86_active && is_gp_fault(intr_info)) {
++		WARN_ON_ONCE(!enable_vmware_backdoor);
++
++		/*
++		 * VMware backdoor emulation on #GP interception only handles
++		 * IN{S}, OUT{S}, and RDPMC, none of which generate a non-zero
++		 * error code on #GP.
++		 */
++		if (error_code) {
++			kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
++			return 1;
++		}
++		return kvm_emulate_instruction(vcpu, EMULTYPE_VMWARE_GP);
++	}
++
++	/*
++	 * The #PF with PFEC.RSVD = 1 indicates the guest is accessing
++	 * MMIO, it is better to report an internal error.
++	 * See the comments in vmx_handle_exit.
++	 */
++	if ((vect_info & VECTORING_INFO_VALID_MASK) &&
++	    !(is_page_fault(intr_info) && !(error_code & PFERR_RSVD_MASK))) {
++		vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
++		vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_SIMUL_EX;
++		vcpu->run->internal.ndata = 3;
++		vcpu->run->internal.data[0] = vect_info;
++		vcpu->run->internal.data[1] = intr_info;
++		vcpu->run->internal.data[2] = error_code;
++		return 0;
++	}
++
++	if (is_page_fault(intr_info)) {
++		cr2 = vmcs_readl(EXIT_QUALIFICATION);
++		/* EPT won't cause page fault directly */
++		WARN_ON_ONCE(!vcpu->arch.apf.host_apf_reason && enable_ept);
++		return kvm_handle_page_fault(vcpu, error_code, cr2, NULL, 0);
++	}
++
++	ex_no = intr_info & INTR_INFO_VECTOR_MASK;
++
++	if (vmx->rmode.vm86_active && rmode_exception(vcpu, ex_no))
++		return handle_rmode_exception(vcpu, ex_no, error_code);
++
++	switch (ex_no) {
++	case AC_VECTOR:
++		kvm_queue_exception_e(vcpu, AC_VECTOR, error_code);
++		return 1;
++	case DB_VECTOR:
++		dr6 = vmcs_readl(EXIT_QUALIFICATION);
++		if (!(vcpu->guest_debug &
++		      (KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP))) {
++			vcpu->arch.dr6 &= ~DR_TRAP_BITS;
++			vcpu->arch.dr6 |= dr6 | DR6_RTM;
++			if (is_icebp(intr_info))
++				WARN_ON(!skip_emulated_instruction(vcpu));
++
++			kvm_queue_exception(vcpu, DB_VECTOR);
++			return 1;
++		}
++		kvm_run->debug.arch.dr6 = dr6 | DR6_FIXED_1;
++		kvm_run->debug.arch.dr7 = vmcs_readl(GUEST_DR7);
++		/* fall through */
++	case BP_VECTOR:
++		/*
++		 * Update instruction length as we may reinject #BP from
++		 * user space while in guest debugging mode. Reading it for
++		 * #DB as well causes no harm, it is not used in that case.
++		 */
++		vmx->vcpu.arch.event_exit_inst_len =
++			vmcs_read32(VM_EXIT_INSTRUCTION_LEN);
++		kvm_run->exit_reason = KVM_EXIT_DEBUG;
++		rip = kvm_rip_read(vcpu);
++		kvm_run->debug.arch.pc = vmcs_readl(GUEST_CS_BASE) + rip;
++		kvm_run->debug.arch.exception = ex_no;
++		break;
++	default:
++		kvm_run->exit_reason = KVM_EXIT_EXCEPTION;
++		kvm_run->ex.exception = ex_no;
++		kvm_run->ex.error_code = error_code;
++		break;
++	}
++	return 0;
++}
++
++static __always_inline int handle_external_interrupt(struct kvm_vcpu *vcpu)
++{
++	++vcpu->stat.irq_exits;
++	return 1;
++}
++
++static int handle_triple_fault(struct kvm_vcpu *vcpu)
++{
++	vcpu->run->exit_reason = KVM_EXIT_SHUTDOWN;
++	vcpu->mmio_needed = 0;
++	return 0;
++}
++
++static int handle_io(struct kvm_vcpu *vcpu)
++{
++	unsigned long exit_qualification;
++	int size, in, string;
++	unsigned port;
++
++	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
++	string = (exit_qualification & 16) != 0;
++
++	++vcpu->stat.io_exits;
++
++	if (string)
++		return kvm_emulate_instruction(vcpu, 0);
++
++	port = exit_qualification >> 16;
++	size = (exit_qualification & 7) + 1;
++	in = (exit_qualification & 8) != 0;
++
++	return kvm_fast_pio(vcpu, size, port, in);
++}
++
++static void
++vmx_patch_hypercall(struct kvm_vcpu *vcpu, unsigned char *hypercall)
++{
++	/*
++	 * Patch in the VMCALL instruction:
++	 */
++	hypercall[0] = 0x0f;
++	hypercall[1] = 0x01;
++	hypercall[2] = 0xc1;
++}
++
++/* called to set cr0 as appropriate for a mov-to-cr0 exit. */
++static int handle_set_cr0(struct kvm_vcpu *vcpu, unsigned long val)
++{
++	if (is_guest_mode(vcpu)) {
++		struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
++		unsigned long orig_val = val;
++
++		/*
++		 * We get here when L2 changed cr0 in a way that did not change
++		 * any of L1's shadowed bits (see nested_vmx_exit_handled_cr),
++		 * but did change L0 shadowed bits. So we first calculate the
++		 * effective cr0 value that L1 would like to write into the
++		 * hardware. It consists of the L2-owned bits from the new
++		 * value combined with the L1-owned bits from L1's guest_cr0.
++		 */
++		val = (val & ~vmcs12->cr0_guest_host_mask) |
++			(vmcs12->guest_cr0 & vmcs12->cr0_guest_host_mask);
++
++		if (!nested_guest_cr0_valid(vcpu, val))
++			return 1;
++
++		if (kvm_set_cr0(vcpu, val))
++			return 1;
++		vmcs_writel(CR0_READ_SHADOW, orig_val);
++		return 0;
++	} else {
++		if (to_vmx(vcpu)->nested.vmxon &&
++		    !nested_host_cr0_valid(vcpu, val))
++			return 1;
++
++		return kvm_set_cr0(vcpu, val);
++	}
++}
++
++static int handle_set_cr4(struct kvm_vcpu *vcpu, unsigned long val)
++{
++	if (is_guest_mode(vcpu)) {
++		struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
++		unsigned long orig_val = val;
++
++		/* analogously to handle_set_cr0 */
++		val = (val & ~vmcs12->cr4_guest_host_mask) |
++			(vmcs12->guest_cr4 & vmcs12->cr4_guest_host_mask);
++		if (kvm_set_cr4(vcpu, val))
++			return 1;
++		vmcs_writel(CR4_READ_SHADOW, orig_val);
++		return 0;
++	} else
++		return kvm_set_cr4(vcpu, val);
++}
++
++static int handle_desc(struct kvm_vcpu *vcpu)
++{
++	WARN_ON(!(vcpu->arch.cr4 & X86_CR4_UMIP));
++	return kvm_emulate_instruction(vcpu, 0);
++}
++
++static int handle_cr(struct kvm_vcpu *vcpu)
++{
++	unsigned long exit_qualification, val;
++	int cr;
++	int reg;
++	int err;
++	int ret;
++
++	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
++	cr = exit_qualification & 15;
++	reg = (exit_qualification >> 8) & 15;
++	switch ((exit_qualification >> 4) & 3) {
++	case 0: /* mov to cr */
++		val = kvm_register_readl(vcpu, reg);
++		trace_kvm_cr_write(cr, val);
++		switch (cr) {
++		case 0:
++			err = handle_set_cr0(vcpu, val);
++			return kvm_complete_insn_gp(vcpu, err);
++		case 3:
++			WARN_ON_ONCE(enable_unrestricted_guest);
++			err = kvm_set_cr3(vcpu, val);
++			return kvm_complete_insn_gp(vcpu, err);
++		case 4:
++			err = handle_set_cr4(vcpu, val);
++			return kvm_complete_insn_gp(vcpu, err);
++		case 8: {
++				u8 cr8_prev = kvm_get_cr8(vcpu);
++				u8 cr8 = (u8)val;
++				err = kvm_set_cr8(vcpu, cr8);
++				ret = kvm_complete_insn_gp(vcpu, err);
++				if (lapic_in_kernel(vcpu))
++					return ret;
++				if (cr8_prev <= cr8)
++					return ret;
++				/*
++				 * TODO: we might be squashing a
++				 * KVM_GUESTDBG_SINGLESTEP-triggered
++				 * KVM_EXIT_DEBUG here.
++				 */
++				vcpu->run->exit_reason = KVM_EXIT_SET_TPR;
++				return 0;
++			}
++		}
++		break;
++	case 2: /* clts */
++		WARN_ONCE(1, "Guest should always own CR0.TS");
++		vmx_set_cr0(vcpu, kvm_read_cr0_bits(vcpu, ~X86_CR0_TS));
++		trace_kvm_cr_write(0, kvm_read_cr0(vcpu));
++		return kvm_skip_emulated_instruction(vcpu);
++	case 1: /*mov from cr*/
++		switch (cr) {
++		case 3:
++			WARN_ON_ONCE(enable_unrestricted_guest);
++			val = kvm_read_cr3(vcpu);
++			kvm_register_write(vcpu, reg, val);
++			trace_kvm_cr_read(cr, val);
++			return kvm_skip_emulated_instruction(vcpu);
++		case 8:
++			val = kvm_get_cr8(vcpu);
++			kvm_register_write(vcpu, reg, val);
++			trace_kvm_cr_read(cr, val);
++			return kvm_skip_emulated_instruction(vcpu);
++		}
++		break;
++	case 3: /* lmsw */
++		val = (exit_qualification >> LMSW_SOURCE_DATA_SHIFT) & 0x0f;
++		trace_kvm_cr_write(0, (kvm_read_cr0(vcpu) & ~0xful) | val);
++		kvm_lmsw(vcpu, val);
++
++		return kvm_skip_emulated_instruction(vcpu);
++	default:
++		break;
++	}
++	vcpu->run->exit_reason = 0;
++	vcpu_unimpl(vcpu, "unhandled control register: op %d cr %d\n",
++	       (int)(exit_qualification >> 4) & 3, cr);
++	return 0;
++}
++
++static int handle_dr(struct kvm_vcpu *vcpu)
++{
++	unsigned long exit_qualification;
++	int dr, dr7, reg;
++
++	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
++	dr = exit_qualification & DEBUG_REG_ACCESS_NUM;
++
++	/* First, if DR does not exist, trigger UD */
++	if (!kvm_require_dr(vcpu, dr))
++		return 1;
++
++	/* Do not handle if the CPL > 0, will trigger GP on re-entry */
++	if (!kvm_require_cpl(vcpu, 0))
++		return 1;
++	dr7 = vmcs_readl(GUEST_DR7);
++	if (dr7 & DR7_GD) {
++		/*
++		 * As the vm-exit takes precedence over the debug trap, we
++		 * need to emulate the latter, either for the host or the
++		 * guest debugging itself.
++		 */
++		if (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP) {
++			vcpu->run->debug.arch.dr6 = vcpu->arch.dr6;
++			vcpu->run->debug.arch.dr7 = dr7;
++			vcpu->run->debug.arch.pc = kvm_get_linear_rip(vcpu);
++			vcpu->run->debug.arch.exception = DB_VECTOR;
++			vcpu->run->exit_reason = KVM_EXIT_DEBUG;
++			return 0;
++		} else {
++			vcpu->arch.dr6 &= ~DR_TRAP_BITS;
++			vcpu->arch.dr6 |= DR6_BD | DR6_RTM;
++			kvm_queue_exception(vcpu, DB_VECTOR);
++			return 1;
++		}
++	}
++
++	if (vcpu->guest_debug == 0) {
++		exec_controls_clearbit(to_vmx(vcpu), CPU_BASED_MOV_DR_EXITING);
++
++		/*
++		 * No more DR vmexits; force a reload of the debug registers
++		 * and reenter on this instruction.  The next vmexit will
++		 * retrieve the full state of the debug registers.
++		 */
++		vcpu->arch.switch_db_regs |= KVM_DEBUGREG_WONT_EXIT;
++		return 1;
++	}
++
++	reg = DEBUG_REG_ACCESS_REG(exit_qualification);
++	if (exit_qualification & TYPE_MOV_FROM_DR) {
++		unsigned long val;
++
++		if (kvm_get_dr(vcpu, dr, &val))
++			return 1;
++		kvm_register_write(vcpu, reg, val);
++	} else
++		if (kvm_set_dr(vcpu, dr, kvm_register_readl(vcpu, reg)))
++			return 1;
++
++	return kvm_skip_emulated_instruction(vcpu);
++}
++
++static u64 vmx_get_dr6(struct kvm_vcpu *vcpu)
++{
++	return vcpu->arch.dr6;
++}
++
++static void vmx_set_dr6(struct kvm_vcpu *vcpu, unsigned long val)
++{
++}
++
++static void vmx_sync_dirty_debug_regs(struct kvm_vcpu *vcpu)
++{
++	get_debugreg(vcpu->arch.db[0], 0);
++	get_debugreg(vcpu->arch.db[1], 1);
++	get_debugreg(vcpu->arch.db[2], 2);
++	get_debugreg(vcpu->arch.db[3], 3);
++	get_debugreg(vcpu->arch.dr6, 6);
++	vcpu->arch.dr7 = vmcs_readl(GUEST_DR7);
++
++	vcpu->arch.switch_db_regs &= ~KVM_DEBUGREG_WONT_EXIT;
++	exec_controls_setbit(to_vmx(vcpu), CPU_BASED_MOV_DR_EXITING);
++}
++
++static void vmx_set_dr7(struct kvm_vcpu *vcpu, unsigned long val)
++{
++	vmcs_writel(GUEST_DR7, val);
++}
++
++static int handle_tpr_below_threshold(struct kvm_vcpu *vcpu)
++{
++	kvm_apic_update_ppr(vcpu);
++	return 1;
++}
++
++static int handle_interrupt_window(struct kvm_vcpu *vcpu)
++{
++	exec_controls_clearbit(to_vmx(vcpu), CPU_BASED_INTR_WINDOW_EXITING);
++
++	kvm_make_request(KVM_REQ_EVENT, vcpu);
++
++	++vcpu->stat.irq_window_exits;
++	return 1;
++}
++
++static int handle_vmcall(struct kvm_vcpu *vcpu)
++{
++	return kvm_emulate_hypercall(vcpu);
++}
++
++static int handle_invd(struct kvm_vcpu *vcpu)
++{
++	return kvm_emulate_instruction(vcpu, 0);
++}
++
++static int handle_invlpg(struct kvm_vcpu *vcpu)
++{
++	unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
++
++	kvm_mmu_invlpg(vcpu, exit_qualification);
++	return kvm_skip_emulated_instruction(vcpu);
++}
++
++static int handle_rdpmc(struct kvm_vcpu *vcpu)
++{
++	int err;
++
++	err = kvm_rdpmc(vcpu);
++	return kvm_complete_insn_gp(vcpu, err);
++}
++
++static int handle_wbinvd(struct kvm_vcpu *vcpu)
++{
++	return kvm_emulate_wbinvd(vcpu);
++}
++
++static int handle_xsetbv(struct kvm_vcpu *vcpu)
++{
++	u64 new_bv = kvm_read_edx_eax(vcpu);
++	u32 index = kvm_rcx_read(vcpu);
++
++	if (kvm_set_xcr(vcpu, index, new_bv) == 0)
++		return kvm_skip_emulated_instruction(vcpu);
++	return 1;
++}
++
++static int handle_apic_access(struct kvm_vcpu *vcpu)
++{
++	if (likely(fasteoi)) {
++		unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
++		int access_type, offset;
++
++		access_type = exit_qualification & APIC_ACCESS_TYPE;
++		offset = exit_qualification & APIC_ACCESS_OFFSET;
++		/*
++		 * Sane guest uses MOV to write EOI, with written value
++		 * not cared. So make a short-circuit here by avoiding
++		 * heavy instruction emulation.
++		 */
++		if ((access_type == TYPE_LINEAR_APIC_INST_WRITE) &&
++		    (offset == APIC_EOI)) {
++			kvm_lapic_set_eoi(vcpu);
++			return kvm_skip_emulated_instruction(vcpu);
++		}
++	}
++	return kvm_emulate_instruction(vcpu, 0);
++}
++
++static int handle_apic_eoi_induced(struct kvm_vcpu *vcpu)
++{
++	unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
++	int vector = exit_qualification & 0xff;
++
++	/* EOI-induced VM exit is trap-like and thus no need to adjust IP */
++	kvm_apic_set_eoi_accelerated(vcpu, vector);
++	return 1;
++}
++
++static int handle_apic_write(struct kvm_vcpu *vcpu)
++{
++	unsigned long exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
++	u32 offset = exit_qualification & 0xfff;
++
++	/* APIC-write VM exit is trap-like and thus no need to adjust IP */
++	kvm_apic_write_nodecode(vcpu, offset);
++	return 1;
++}
++
++static int handle_task_switch(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	unsigned long exit_qualification;
++	bool has_error_code = false;
++	u32 error_code = 0;
++	u16 tss_selector;
++	int reason, type, idt_v, idt_index;
++
++	idt_v = (vmx->idt_vectoring_info & VECTORING_INFO_VALID_MASK);
++	idt_index = (vmx->idt_vectoring_info & VECTORING_INFO_VECTOR_MASK);
++	type = (vmx->idt_vectoring_info & VECTORING_INFO_TYPE_MASK);
++
++	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
++
++	reason = (u32)exit_qualification >> 30;
++	if (reason == TASK_SWITCH_GATE && idt_v) {
++		switch (type) {
++		case INTR_TYPE_NMI_INTR:
++			vcpu->arch.nmi_injected = false;
++			vmx_set_nmi_mask(vcpu, true);
++			break;
++		case INTR_TYPE_EXT_INTR:
++		case INTR_TYPE_SOFT_INTR:
++			kvm_clear_interrupt_queue(vcpu);
++			break;
++		case INTR_TYPE_HARD_EXCEPTION:
++			if (vmx->idt_vectoring_info &
++			    VECTORING_INFO_DELIVER_CODE_MASK) {
++				has_error_code = true;
++				error_code =
++					vmcs_read32(IDT_VECTORING_ERROR_CODE);
++			}
++			/* fall through */
++		case INTR_TYPE_SOFT_EXCEPTION:
++			kvm_clear_exception_queue(vcpu);
++			break;
++		default:
++			break;
++		}
++	}
++	tss_selector = exit_qualification;
++
++	if (!idt_v || (type != INTR_TYPE_HARD_EXCEPTION &&
++		       type != INTR_TYPE_EXT_INTR &&
++		       type != INTR_TYPE_NMI_INTR))
++		WARN_ON(!skip_emulated_instruction(vcpu));
++
++	/*
++	 * TODO: What about debug traps on tss switch?
++	 *       Are we supposed to inject them and update dr6?
++	 */
++	return kvm_task_switch(vcpu, tss_selector,
++			       type == INTR_TYPE_SOFT_INTR ? idt_index : -1,
++			       reason, has_error_code, error_code);
++}
++
++static int handle_ept_violation(struct kvm_vcpu *vcpu)
++{
++	unsigned long exit_qualification;
++	gpa_t gpa;
++	u64 error_code;
++
++	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
++
++	/*
++	 * EPT violation happened while executing iret from NMI,
++	 * "blocked by NMI" bit has to be set before next VM entry.
++	 * There are errata that may cause this bit to not be set:
++	 * AAK134, BY25.
++	 */
++	if (!(to_vmx(vcpu)->idt_vectoring_info & VECTORING_INFO_VALID_MASK) &&
++			enable_vnmi &&
++			(exit_qualification & INTR_INFO_UNBLOCK_NMI))
++		vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO, GUEST_INTR_STATE_NMI);
++
++	gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS);
++	trace_kvm_page_fault(gpa, exit_qualification);
++
++	/* Is it a read fault? */
++	error_code = (exit_qualification & EPT_VIOLATION_ACC_READ)
++		     ? PFERR_USER_MASK : 0;
++	/* Is it a write fault? */
++	error_code |= (exit_qualification & EPT_VIOLATION_ACC_WRITE)
++		      ? PFERR_WRITE_MASK : 0;
++	/* Is it a fetch fault? */
++	error_code |= (exit_qualification & EPT_VIOLATION_ACC_INSTR)
++		      ? PFERR_FETCH_MASK : 0;
++	/* ept page table entry is present? */
++	error_code |= (exit_qualification &
++		       (EPT_VIOLATION_READABLE | EPT_VIOLATION_WRITABLE |
++			EPT_VIOLATION_EXECUTABLE))
++		      ? PFERR_PRESENT_MASK : 0;
++
++	error_code |= (exit_qualification & 0x100) != 0 ?
++	       PFERR_GUEST_FINAL_MASK : PFERR_GUEST_PAGE_MASK;
++
++	vcpu->arch.exit_qualification = exit_qualification;
++	return kvm_mmu_page_fault(vcpu, gpa, error_code, NULL, 0);
++}
++
++static int handle_ept_misconfig(struct kvm_vcpu *vcpu)
++{
++	gpa_t gpa;
++
++	/*
++	 * A nested guest cannot optimize MMIO vmexits, because we have an
++	 * nGPA here instead of the required GPA.
++	 */
++	gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS);
++	if (!is_guest_mode(vcpu) &&
++	    !kvm_io_bus_write(vcpu, KVM_FAST_MMIO_BUS, gpa, 0, NULL)) {
++		trace_kvm_fast_mmio(gpa);
++		return kvm_skip_emulated_instruction(vcpu);
++	}
++
++	return kvm_mmu_page_fault(vcpu, gpa, PFERR_RSVD_MASK, NULL, 0);
++}
++
++static int handle_nmi_window(struct kvm_vcpu *vcpu)
++{
++	WARN_ON_ONCE(!enable_vnmi);
++	exec_controls_clearbit(to_vmx(vcpu), CPU_BASED_NMI_WINDOW_EXITING);
++	++vcpu->stat.nmi_window_exits;
++	kvm_make_request(KVM_REQ_EVENT, vcpu);
++
++	return 1;
++}
++
++static int handle_invalid_guest_state(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	bool intr_window_requested;
++	unsigned count = 130;
++
++	/*
++	 * We should never reach the point where we are emulating L2
++	 * due to invalid guest state as that means we incorrectly
++	 * allowed a nested VMEntry with an invalid vmcs12.
++	 */
++	WARN_ON_ONCE(vmx->emulation_required && vmx->nested.nested_run_pending);
++
++	intr_window_requested = exec_controls_get(vmx) &
++				CPU_BASED_INTR_WINDOW_EXITING;
++
++	while (vmx->emulation_required && count-- != 0) {
++		if (intr_window_requested && vmx_interrupt_allowed(vcpu))
++			return handle_interrupt_window(&vmx->vcpu);
++
++		if (kvm_test_request(KVM_REQ_EVENT, vcpu))
++			return 1;
++
++		if (!kvm_emulate_instruction(vcpu, 0))
++			return 0;
++
++		if (vmx->emulation_required && !vmx->rmode.vm86_active &&
++		    vcpu->arch.exception.pending) {
++			vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
++			vcpu->run->internal.suberror =
++						KVM_INTERNAL_ERROR_EMULATION;
++			vcpu->run->internal.ndata = 0;
++			return 0;
++		}
++
++		if (vcpu->arch.halt_request) {
++			vcpu->arch.halt_request = 0;
++			return kvm_vcpu_halt(vcpu);
++		}
++
++		/*
++		 * Note, return 1 and not 0, vcpu_run() is responsible for
++		 * morphing the pending signal into the proper return code.
++		 */
++		if (signal_pending(current))
++			return 1;
++
++		if (need_resched())
++			schedule();
++	}
++
++	return 1;
++}
++
++static void grow_ple_window(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	unsigned int old = vmx->ple_window;
++
++	vmx->ple_window = __grow_ple_window(old, ple_window,
++					    ple_window_grow,
++					    ple_window_max);
++
++	if (vmx->ple_window != old) {
++		vmx->ple_window_dirty = true;
++		trace_kvm_ple_window_update(vcpu->vcpu_id,
++					    vmx->ple_window, old);
++	}
++}
++
++static void shrink_ple_window(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	unsigned int old = vmx->ple_window;
++
++	vmx->ple_window = __shrink_ple_window(old, ple_window,
++					      ple_window_shrink,
++					      ple_window);
++
++	if (vmx->ple_window != old) {
++		vmx->ple_window_dirty = true;
++		trace_kvm_ple_window_update(vcpu->vcpu_id,
++					    vmx->ple_window, old);
++	}
++}
++
++/*
++ * Handler for POSTED_INTERRUPT_WAKEUP_VECTOR.
++ */
++static void wakeup_handler(void)
++{
++	struct kvm_vcpu *vcpu;
++	int cpu = smp_processor_id();
++
++	spin_lock(&per_cpu(blocked_vcpu_on_cpu_lock, cpu));
++	list_for_each_entry(vcpu, &per_cpu(blocked_vcpu_on_cpu, cpu),
++			blocked_vcpu_list) {
++		struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
++
++		if (pi_test_on(pi_desc) == 1)
++			kvm_vcpu_kick(vcpu);
++	}
++	spin_unlock(&per_cpu(blocked_vcpu_on_cpu_lock, cpu));
++}
++
++static void vmx_enable_tdp(void)
++{
++	kvm_mmu_set_mask_ptes(VMX_EPT_READABLE_MASK,
++		enable_ept_ad_bits ? VMX_EPT_ACCESS_BIT : 0ull,
++		enable_ept_ad_bits ? VMX_EPT_DIRTY_BIT : 0ull,
++		0ull, VMX_EPT_EXECUTABLE_MASK,
++		cpu_has_vmx_ept_execute_only() ? 0ull : VMX_EPT_READABLE_MASK,
++		VMX_EPT_RWX_MASK, 0ull);
++
++	ept_set_mmio_spte_mask();
++	kvm_enable_tdp();
++}
++
++/*
++ * Indicate a busy-waiting vcpu in spinlock. We do not enable the PAUSE
++ * exiting, so only get here on cpu with PAUSE-Loop-Exiting.
++ */
++static int handle_pause(struct kvm_vcpu *vcpu)
++{
++	if (!kvm_pause_in_guest(vcpu->kvm))
++		grow_ple_window(vcpu);
++
++	/*
++	 * Intel sdm vol3 ch-25.1.3 says: The "PAUSE-loop exiting"
++	 * VM-execution control is ignored if CPL > 0. OTOH, KVM
++	 * never set PAUSE_EXITING and just set PLE if supported,
++	 * so the vcpu must be CPL=0 if it gets a PAUSE exit.
++	 */
++	kvm_vcpu_on_spin(vcpu, true);
++	return kvm_skip_emulated_instruction(vcpu);
++}
++
++static int handle_nop(struct kvm_vcpu *vcpu)
++{
++	return kvm_skip_emulated_instruction(vcpu);
++}
++
++static int handle_mwait(struct kvm_vcpu *vcpu)
++{
++	printk_once(KERN_WARNING "kvm: MWAIT instruction emulated as NOP!\n");
++	return handle_nop(vcpu);
++}
++
++static int handle_invalid_op(struct kvm_vcpu *vcpu)
++{
++	kvm_queue_exception(vcpu, UD_VECTOR);
++	return 1;
++}
++
++static int handle_monitor_trap(struct kvm_vcpu *vcpu)
++{
++	return 1;
++}
++
++static int handle_monitor(struct kvm_vcpu *vcpu)
++{
++	printk_once(KERN_WARNING "kvm: MONITOR instruction emulated as NOP!\n");
++	return handle_nop(vcpu);
++}
++
++static int handle_invpcid(struct kvm_vcpu *vcpu)
++{
++	u32 vmx_instruction_info;
++	unsigned long type;
++	bool pcid_enabled;
++	gva_t gva;
++	struct x86_exception e;
++	unsigned i;
++	unsigned long roots_to_free = 0;
++	struct {
++		u64 pcid;
++		u64 gla;
++	} operand;
++
++	if (!guest_cpuid_has(vcpu, X86_FEATURE_INVPCID)) {
++		kvm_queue_exception(vcpu, UD_VECTOR);
++		return 1;
++	}
++
++	vmx_instruction_info = vmcs_read32(VMX_INSTRUCTION_INFO);
++	type = kvm_register_readl(vcpu, (vmx_instruction_info >> 28) & 0xf);
++
++	if (type > 3) {
++		kvm_inject_gp(vcpu, 0);
++		return 1;
++	}
++
++	/* According to the Intel instruction reference, the memory operand
++	 * is read even if it isn't needed (e.g., for type==all)
++	 */
++	if (get_vmx_mem_address(vcpu, vmcs_readl(EXIT_QUALIFICATION),
++				vmx_instruction_info, false,
++				sizeof(operand), &gva))
++		return 1;
++
++	if (kvm_read_guest_virt(vcpu, gva, &operand, sizeof(operand), &e)) {
++		kvm_inject_page_fault(vcpu, &e);
++		return 1;
++	}
++
++	if (operand.pcid >> 12 != 0) {
++		kvm_inject_gp(vcpu, 0);
++		return 1;
++	}
++
++	pcid_enabled = kvm_read_cr4_bits(vcpu, X86_CR4_PCIDE);
++
++	switch (type) {
++	case INVPCID_TYPE_INDIV_ADDR:
++		if ((!pcid_enabled && (operand.pcid != 0)) ||
++		    is_noncanonical_address(operand.gla, vcpu)) {
++			kvm_inject_gp(vcpu, 0);
++			return 1;
++		}
++		kvm_mmu_invpcid_gva(vcpu, operand.gla, operand.pcid);
++		return kvm_skip_emulated_instruction(vcpu);
++
++	case INVPCID_TYPE_SINGLE_CTXT:
++		if (!pcid_enabled && (operand.pcid != 0)) {
++			kvm_inject_gp(vcpu, 0);
++			return 1;
++		}
++
++		if (kvm_get_active_pcid(vcpu) == operand.pcid) {
++			kvm_mmu_sync_roots(vcpu);
++			kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
++		}
++
++		for (i = 0; i < KVM_MMU_NUM_PREV_ROOTS; i++)
++			if (kvm_get_pcid(vcpu, vcpu->arch.mmu->prev_roots[i].cr3)
++			    == operand.pcid)
++				roots_to_free |= KVM_MMU_ROOT_PREVIOUS(i);
++
++		kvm_mmu_free_roots(vcpu, vcpu->arch.mmu, roots_to_free);
++		/*
++		 * If neither the current cr3 nor any of the prev_roots use the
++		 * given PCID, then nothing needs to be done here because a
++		 * resync will happen anyway before switching to any other CR3.
++		 */
++
++		return kvm_skip_emulated_instruction(vcpu);
++
++	case INVPCID_TYPE_ALL_NON_GLOBAL:
++		/*
++		 * Currently, KVM doesn't mark global entries in the shadow
++		 * page tables, so a non-global flush just degenerates to a
++		 * global flush. If needed, we could optimize this later by
++		 * keeping track of global entries in shadow page tables.
++		 */
++
++		/* fall-through */
++	case INVPCID_TYPE_ALL_INCL_GLOBAL:
++		kvm_mmu_unload(vcpu);
++		return kvm_skip_emulated_instruction(vcpu);
++
++	default:
++		BUG(); /* We have already checked above that type <= 3 */
++	}
++}
++
++static int handle_pml_full(struct kvm_vcpu *vcpu)
++{
++	unsigned long exit_qualification;
++
++	trace_kvm_pml_full(vcpu->vcpu_id);
++
++	exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
++
++	/*
++	 * PML buffer FULL happened while executing iret from NMI,
++	 * "blocked by NMI" bit has to be set before next VM entry.
++	 */
++	if (!(to_vmx(vcpu)->idt_vectoring_info & VECTORING_INFO_VALID_MASK) &&
++			enable_vnmi &&
++			(exit_qualification & INTR_INFO_UNBLOCK_NMI))
++		vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO,
++				GUEST_INTR_STATE_NMI);
++
++	/*
++	 * PML buffer already flushed at beginning of VMEXIT. Nothing to do
++	 * here.., and there's no userspace involvement needed for PML.
++	 */
++	return 1;
++}
++
++static int handle_preemption_timer(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++
++	if (!vmx->req_immediate_exit &&
++	    !unlikely(vmx->loaded_vmcs->hv_timer_soft_disabled))
++		kvm_lapic_expired_hv_timer(vcpu);
++
++	return 1;
++}
++
++/*
++ * When nested=0, all VMX instruction VM Exits filter here.  The handlers
++ * are overwritten by nested_vmx_setup() when nested=1.
++ */
++static int handle_vmx_instruction(struct kvm_vcpu *vcpu)
++{
++	kvm_queue_exception(vcpu, UD_VECTOR);
++	return 1;
++}
++
++static int handle_encls(struct kvm_vcpu *vcpu)
++{
++	/*
++	 * SGX virtualization is not yet supported.  There is no software
++	 * enable bit for SGX, so we have to trap ENCLS and inject a #UD
++	 * to prevent the guest from executing ENCLS.
++	 */
++	kvm_queue_exception(vcpu, UD_VECTOR);
++	return 1;
++}
++
++/*
++ * The exit handlers return 1 if the exit was handled fully and guest execution
++ * may resume.  Otherwise they set the kvm_run parameter to indicate what needs
++ * to be done to userspace and return 0.
++ */
++static int (*kvm_vmx_exit_handlers[])(struct kvm_vcpu *vcpu) = {
++	[EXIT_REASON_EXCEPTION_NMI]           = handle_exception_nmi,
++	[EXIT_REASON_EXTERNAL_INTERRUPT]      = handle_external_interrupt,
++	[EXIT_REASON_TRIPLE_FAULT]            = handle_triple_fault,
++	[EXIT_REASON_NMI_WINDOW]	      = handle_nmi_window,
++	[EXIT_REASON_IO_INSTRUCTION]          = handle_io,
++	[EXIT_REASON_CR_ACCESS]               = handle_cr,
++	[EXIT_REASON_DR_ACCESS]               = handle_dr,
++	[EXIT_REASON_CPUID]                   = kvm_emulate_cpuid,
++	[EXIT_REASON_MSR_READ]                = kvm_emulate_rdmsr,
++	[EXIT_REASON_MSR_WRITE]               = kvm_emulate_wrmsr,
++	[EXIT_REASON_INTERRUPT_WINDOW]        = handle_interrupt_window,
++	[EXIT_REASON_HLT]                     = kvm_emulate_halt,
++	[EXIT_REASON_INVD]		      = handle_invd,
++	[EXIT_REASON_INVLPG]		      = handle_invlpg,
++	[EXIT_REASON_RDPMC]                   = handle_rdpmc,
++	[EXIT_REASON_VMCALL]                  = handle_vmcall,
++	[EXIT_REASON_VMCLEAR]		      = handle_vmx_instruction,
++	[EXIT_REASON_VMLAUNCH]		      = handle_vmx_instruction,
++	[EXIT_REASON_VMPTRLD]		      = handle_vmx_instruction,
++	[EXIT_REASON_VMPTRST]		      = handle_vmx_instruction,
++	[EXIT_REASON_VMREAD]		      = handle_vmx_instruction,
++	[EXIT_REASON_VMRESUME]		      = handle_vmx_instruction,
++	[EXIT_REASON_VMWRITE]		      = handle_vmx_instruction,
++	[EXIT_REASON_VMOFF]		      = handle_vmx_instruction,
++	[EXIT_REASON_VMON]		      = handle_vmx_instruction,
++	[EXIT_REASON_TPR_BELOW_THRESHOLD]     = handle_tpr_below_threshold,
++	[EXIT_REASON_APIC_ACCESS]             = handle_apic_access,
++	[EXIT_REASON_APIC_WRITE]              = handle_apic_write,
++	[EXIT_REASON_EOI_INDUCED]             = handle_apic_eoi_induced,
++	[EXIT_REASON_WBINVD]                  = handle_wbinvd,
++	[EXIT_REASON_XSETBV]                  = handle_xsetbv,
++	[EXIT_REASON_TASK_SWITCH]             = handle_task_switch,
++	[EXIT_REASON_MCE_DURING_VMENTRY]      = handle_machine_check,
++	[EXIT_REASON_GDTR_IDTR]		      = handle_desc,
++	[EXIT_REASON_LDTR_TR]		      = handle_desc,
++	[EXIT_REASON_EPT_VIOLATION]	      = handle_ept_violation,
++	[EXIT_REASON_EPT_MISCONFIG]           = handle_ept_misconfig,
++	[EXIT_REASON_PAUSE_INSTRUCTION]       = handle_pause,
++	[EXIT_REASON_MWAIT_INSTRUCTION]	      = handle_mwait,
++	[EXIT_REASON_MONITOR_TRAP_FLAG]       = handle_monitor_trap,
++	[EXIT_REASON_MONITOR_INSTRUCTION]     = handle_monitor,
++	[EXIT_REASON_INVEPT]                  = handle_vmx_instruction,
++	[EXIT_REASON_INVVPID]                 = handle_vmx_instruction,
++	[EXIT_REASON_RDRAND]                  = handle_invalid_op,
++	[EXIT_REASON_RDSEED]                  = handle_invalid_op,
++	[EXIT_REASON_PML_FULL]		      = handle_pml_full,
++	[EXIT_REASON_INVPCID]                 = handle_invpcid,
++	[EXIT_REASON_VMFUNC]		      = handle_vmx_instruction,
++	[EXIT_REASON_PREEMPTION_TIMER]	      = handle_preemption_timer,
++	[EXIT_REASON_ENCLS]		      = handle_encls,
++};
++
++static const int kvm_vmx_max_exit_handlers =
++	ARRAY_SIZE(kvm_vmx_exit_handlers);
++
++static void vmx_get_exit_info(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2)
++{
++	*info1 = vmcs_readl(EXIT_QUALIFICATION);
++	*info2 = vmcs_read32(VM_EXIT_INTR_INFO);
++}
++
++static void vmx_destroy_pml_buffer(struct vcpu_vmx *vmx)
++{
++	if (vmx->pml_pg) {
++		__free_page(vmx->pml_pg);
++		vmx->pml_pg = NULL;
++	}
++}
++
++static void vmx_flush_pml_buffer(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	u64 *pml_buf;
++	u16 pml_idx;
++
++	pml_idx = vmcs_read16(GUEST_PML_INDEX);
++
++	/* Do nothing if PML buffer is empty */
++	if (pml_idx == (PML_ENTITY_NUM - 1))
++		return;
++
++	/* PML index always points to next available PML buffer entity */
++	if (pml_idx >= PML_ENTITY_NUM)
++		pml_idx = 0;
++	else
++		pml_idx++;
++
++	pml_buf = page_address(vmx->pml_pg);
++	for (; pml_idx < PML_ENTITY_NUM; pml_idx++) {
++		u64 gpa;
++
++		gpa = pml_buf[pml_idx];
++		WARN_ON(gpa & (PAGE_SIZE - 1));
++		kvm_vcpu_mark_page_dirty(vcpu, gpa >> PAGE_SHIFT);
++	}
++
++	/* reset PML index */
++	vmcs_write16(GUEST_PML_INDEX, PML_ENTITY_NUM - 1);
++}
++
++/*
++ * Flush all vcpus' PML buffer and update logged GPAs to dirty_bitmap.
++ * Called before reporting dirty_bitmap to userspace.
++ */
++static void kvm_flush_pml_buffers(struct kvm *kvm)
++{
++	int i;
++	struct kvm_vcpu *vcpu;
++	/*
++	 * We only need to kick vcpu out of guest mode here, as PML buffer
++	 * is flushed at beginning of all VMEXITs, and it's obvious that only
++	 * vcpus running in guest are possible to have unflushed GPAs in PML
++	 * buffer.
++	 */
++	kvm_for_each_vcpu(i, vcpu, kvm)
++		kvm_vcpu_kick(vcpu);
++}
++
++static void vmx_dump_sel(char *name, uint32_t sel)
++{
++	pr_err("%s sel=0x%04x, attr=0x%05x, limit=0x%08x, base=0x%016lx\n",
++	       name, vmcs_read16(sel),
++	       vmcs_read32(sel + GUEST_ES_AR_BYTES - GUEST_ES_SELECTOR),
++	       vmcs_read32(sel + GUEST_ES_LIMIT - GUEST_ES_SELECTOR),
++	       vmcs_readl(sel + GUEST_ES_BASE - GUEST_ES_SELECTOR));
++}
++
++static void vmx_dump_dtsel(char *name, uint32_t limit)
++{
++	pr_err("%s                           limit=0x%08x, base=0x%016lx\n",
++	       name, vmcs_read32(limit),
++	       vmcs_readl(limit + GUEST_GDTR_BASE - GUEST_GDTR_LIMIT));
++}
++
++void dump_vmcs(void)
++{
++	u32 vmentry_ctl, vmexit_ctl;
++	u32 cpu_based_exec_ctrl, pin_based_exec_ctrl, secondary_exec_control;
++	unsigned long cr4;
++	u64 efer;
++	int i, n;
++
++	if (!dump_invalid_vmcs) {
++		pr_warn_ratelimited("set kvm_intel.dump_invalid_vmcs=1 to dump internal KVM state.\n");
++		return;
++	}
++
++	vmentry_ctl = vmcs_read32(VM_ENTRY_CONTROLS);
++	vmexit_ctl = vmcs_read32(VM_EXIT_CONTROLS);
++	cpu_based_exec_ctrl = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL);
++	pin_based_exec_ctrl = vmcs_read32(PIN_BASED_VM_EXEC_CONTROL);
++	cr4 = vmcs_readl(GUEST_CR4);
++	efer = vmcs_read64(GUEST_IA32_EFER);
++	secondary_exec_control = 0;
++	if (cpu_has_secondary_exec_ctrls())
++		secondary_exec_control = vmcs_read32(SECONDARY_VM_EXEC_CONTROL);
++
++	pr_err("*** Guest State ***\n");
++	pr_err("CR0: actual=0x%016lx, shadow=0x%016lx, gh_mask=%016lx\n",
++	       vmcs_readl(GUEST_CR0), vmcs_readl(CR0_READ_SHADOW),
++	       vmcs_readl(CR0_GUEST_HOST_MASK));
++	pr_err("CR4: actual=0x%016lx, shadow=0x%016lx, gh_mask=%016lx\n",
++	       cr4, vmcs_readl(CR4_READ_SHADOW), vmcs_readl(CR4_GUEST_HOST_MASK));
++	pr_err("CR3 = 0x%016lx\n", vmcs_readl(GUEST_CR3));
++	if ((secondary_exec_control & SECONDARY_EXEC_ENABLE_EPT) &&
++	    (cr4 & X86_CR4_PAE) && !(efer & EFER_LMA))
++	{
++		pr_err("PDPTR0 = 0x%016llx  PDPTR1 = 0x%016llx\n",
++		       vmcs_read64(GUEST_PDPTR0), vmcs_read64(GUEST_PDPTR1));
++		pr_err("PDPTR2 = 0x%016llx  PDPTR3 = 0x%016llx\n",
++		       vmcs_read64(GUEST_PDPTR2), vmcs_read64(GUEST_PDPTR3));
++	}
++	pr_err("RSP = 0x%016lx  RIP = 0x%016lx\n",
++	       vmcs_readl(GUEST_RSP), vmcs_readl(GUEST_RIP));
++	pr_err("RFLAGS=0x%08lx         DR7 = 0x%016lx\n",
++	       vmcs_readl(GUEST_RFLAGS), vmcs_readl(GUEST_DR7));
++	pr_err("Sysenter RSP=%016lx CS:RIP=%04x:%016lx\n",
++	       vmcs_readl(GUEST_SYSENTER_ESP),
++	       vmcs_read32(GUEST_SYSENTER_CS), vmcs_readl(GUEST_SYSENTER_EIP));
++	vmx_dump_sel("CS:  ", GUEST_CS_SELECTOR);
++	vmx_dump_sel("DS:  ", GUEST_DS_SELECTOR);
++	vmx_dump_sel("SS:  ", GUEST_SS_SELECTOR);
++	vmx_dump_sel("ES:  ", GUEST_ES_SELECTOR);
++	vmx_dump_sel("FS:  ", GUEST_FS_SELECTOR);
++	vmx_dump_sel("GS:  ", GUEST_GS_SELECTOR);
++	vmx_dump_dtsel("GDTR:", GUEST_GDTR_LIMIT);
++	vmx_dump_sel("LDTR:", GUEST_LDTR_SELECTOR);
++	vmx_dump_dtsel("IDTR:", GUEST_IDTR_LIMIT);
++	vmx_dump_sel("TR:  ", GUEST_TR_SELECTOR);
++	if ((vmexit_ctl & (VM_EXIT_SAVE_IA32_PAT | VM_EXIT_SAVE_IA32_EFER)) ||
++	    (vmentry_ctl & (VM_ENTRY_LOAD_IA32_PAT | VM_ENTRY_LOAD_IA32_EFER)))
++		pr_err("EFER =     0x%016llx  PAT = 0x%016llx\n",
++		       efer, vmcs_read64(GUEST_IA32_PAT));
++	pr_err("DebugCtl = 0x%016llx  DebugExceptions = 0x%016lx\n",
++	       vmcs_read64(GUEST_IA32_DEBUGCTL),
++	       vmcs_readl(GUEST_PENDING_DBG_EXCEPTIONS));
++	if (cpu_has_load_perf_global_ctrl() &&
++	    vmentry_ctl & VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL)
++		pr_err("PerfGlobCtl = 0x%016llx\n",
++		       vmcs_read64(GUEST_IA32_PERF_GLOBAL_CTRL));
++	if (vmentry_ctl & VM_ENTRY_LOAD_BNDCFGS)
++		pr_err("BndCfgS = 0x%016llx\n", vmcs_read64(GUEST_BNDCFGS));
++	pr_err("Interruptibility = %08x  ActivityState = %08x\n",
++	       vmcs_read32(GUEST_INTERRUPTIBILITY_INFO),
++	       vmcs_read32(GUEST_ACTIVITY_STATE));
++	if (secondary_exec_control & SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY)
++		pr_err("InterruptStatus = %04x\n",
++		       vmcs_read16(GUEST_INTR_STATUS));
++
++	pr_err("*** Host State ***\n");
++	pr_err("RIP = 0x%016lx  RSP = 0x%016lx\n",
++	       vmcs_readl(HOST_RIP), vmcs_readl(HOST_RSP));
++	pr_err("CS=%04x SS=%04x DS=%04x ES=%04x FS=%04x GS=%04x TR=%04x\n",
++	       vmcs_read16(HOST_CS_SELECTOR), vmcs_read16(HOST_SS_SELECTOR),
++	       vmcs_read16(HOST_DS_SELECTOR), vmcs_read16(HOST_ES_SELECTOR),
++	       vmcs_read16(HOST_FS_SELECTOR), vmcs_read16(HOST_GS_SELECTOR),
++	       vmcs_read16(HOST_TR_SELECTOR));
++	pr_err("FSBase=%016lx GSBase=%016lx TRBase=%016lx\n",
++	       vmcs_readl(HOST_FS_BASE), vmcs_readl(HOST_GS_BASE),
++	       vmcs_readl(HOST_TR_BASE));
++	pr_err("GDTBase=%016lx IDTBase=%016lx\n",
++	       vmcs_readl(HOST_GDTR_BASE), vmcs_readl(HOST_IDTR_BASE));
++	pr_err("CR0=%016lx CR3=%016lx CR4=%016lx\n",
++	       vmcs_readl(HOST_CR0), vmcs_readl(HOST_CR3),
++	       vmcs_readl(HOST_CR4));
++	pr_err("Sysenter RSP=%016lx CS:RIP=%04x:%016lx\n",
++	       vmcs_readl(HOST_IA32_SYSENTER_ESP),
++	       vmcs_read32(HOST_IA32_SYSENTER_CS),
++	       vmcs_readl(HOST_IA32_SYSENTER_EIP));
++	if (vmexit_ctl & (VM_EXIT_LOAD_IA32_PAT | VM_EXIT_LOAD_IA32_EFER))
++		pr_err("EFER = 0x%016llx  PAT = 0x%016llx\n",
++		       vmcs_read64(HOST_IA32_EFER),
++		       vmcs_read64(HOST_IA32_PAT));
++	if (cpu_has_load_perf_global_ctrl() &&
++	    vmexit_ctl & VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL)
++		pr_err("PerfGlobCtl = 0x%016llx\n",
++		       vmcs_read64(HOST_IA32_PERF_GLOBAL_CTRL));
++
++	pr_err("*** Control State ***\n");
++	pr_err("PinBased=%08x CPUBased=%08x SecondaryExec=%08x\n",
++	       pin_based_exec_ctrl, cpu_based_exec_ctrl, secondary_exec_control);
++	pr_err("EntryControls=%08x ExitControls=%08x\n", vmentry_ctl, vmexit_ctl);
++	pr_err("ExceptionBitmap=%08x PFECmask=%08x PFECmatch=%08x\n",
++	       vmcs_read32(EXCEPTION_BITMAP),
++	       vmcs_read32(PAGE_FAULT_ERROR_CODE_MASK),
++	       vmcs_read32(PAGE_FAULT_ERROR_CODE_MATCH));
++	pr_err("VMEntry: intr_info=%08x errcode=%08x ilen=%08x\n",
++	       vmcs_read32(VM_ENTRY_INTR_INFO_FIELD),
++	       vmcs_read32(VM_ENTRY_EXCEPTION_ERROR_CODE),
++	       vmcs_read32(VM_ENTRY_INSTRUCTION_LEN));
++	pr_err("VMExit: intr_info=%08x errcode=%08x ilen=%08x\n",
++	       vmcs_read32(VM_EXIT_INTR_INFO),
++	       vmcs_read32(VM_EXIT_INTR_ERROR_CODE),
++	       vmcs_read32(VM_EXIT_INSTRUCTION_LEN));
++	pr_err("        reason=%08x qualification=%016lx\n",
++	       vmcs_read32(VM_EXIT_REASON), vmcs_readl(EXIT_QUALIFICATION));
++	pr_err("IDTVectoring: info=%08x errcode=%08x\n",
++	       vmcs_read32(IDT_VECTORING_INFO_FIELD),
++	       vmcs_read32(IDT_VECTORING_ERROR_CODE));
++	pr_err("TSC Offset = 0x%016llx\n", vmcs_read64(TSC_OFFSET));
++	if (secondary_exec_control & SECONDARY_EXEC_TSC_SCALING)
++		pr_err("TSC Multiplier = 0x%016llx\n",
++		       vmcs_read64(TSC_MULTIPLIER));
++	if (cpu_based_exec_ctrl & CPU_BASED_TPR_SHADOW) {
++		if (secondary_exec_control & SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY) {
++			u16 status = vmcs_read16(GUEST_INTR_STATUS);
++			pr_err("SVI|RVI = %02x|%02x ", status >> 8, status & 0xff);
++		}
++		pr_cont("TPR Threshold = 0x%02x\n", vmcs_read32(TPR_THRESHOLD));
++		if (secondary_exec_control & SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES)
++			pr_err("APIC-access addr = 0x%016llx ", vmcs_read64(APIC_ACCESS_ADDR));
++		pr_cont("virt-APIC addr = 0x%016llx\n", vmcs_read64(VIRTUAL_APIC_PAGE_ADDR));
++	}
++	if (pin_based_exec_ctrl & PIN_BASED_POSTED_INTR)
++		pr_err("PostedIntrVec = 0x%02x\n", vmcs_read16(POSTED_INTR_NV));
++	if ((secondary_exec_control & SECONDARY_EXEC_ENABLE_EPT))
++		pr_err("EPT pointer = 0x%016llx\n", vmcs_read64(EPT_POINTER));
++	n = vmcs_read32(CR3_TARGET_COUNT);
++	for (i = 0; i + 1 < n; i += 4)
++		pr_err("CR3 target%u=%016lx target%u=%016lx\n",
++		       i, vmcs_readl(CR3_TARGET_VALUE0 + i * 2),
++		       i + 1, vmcs_readl(CR3_TARGET_VALUE0 + i * 2 + 2));
++	if (i < n)
++		pr_err("CR3 target%u=%016lx\n",
++		       i, vmcs_readl(CR3_TARGET_VALUE0 + i * 2));
++	if (secondary_exec_control & SECONDARY_EXEC_PAUSE_LOOP_EXITING)
++		pr_err("PLE Gap=%08x Window=%08x\n",
++		       vmcs_read32(PLE_GAP), vmcs_read32(PLE_WINDOW));
++	if (secondary_exec_control & SECONDARY_EXEC_ENABLE_VPID)
++		pr_err("Virtual processor ID = 0x%04x\n",
++		       vmcs_read16(VIRTUAL_PROCESSOR_ID));
++}
++
++/*
++ * The guest has exited.  See if we can fix it or if we need userspace
++ * assistance.
++ */
++static int vmx_handle_exit(struct kvm_vcpu *vcpu,
++	enum exit_fastpath_completion exit_fastpath)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	u32 exit_reason = vmx->exit_reason;
++	u32 vectoring_info = vmx->idt_vectoring_info;
++
++	trace_kvm_exit(exit_reason, vcpu, KVM_ISA_VMX);
++
++	/*
++	 * Flush logged GPAs PML buffer, this will make dirty_bitmap more
++	 * updated. Another good is, in kvm_vm_ioctl_get_dirty_log, before
++	 * querying dirty_bitmap, we only need to kick all vcpus out of guest
++	 * mode as if vcpus is in root mode, the PML buffer must has been
++	 * flushed already.
++	 */
++	if (enable_pml)
++		vmx_flush_pml_buffer(vcpu);
++
++	/* If guest state is invalid, start emulating */
++	if (vmx->emulation_required)
++		return handle_invalid_guest_state(vcpu);
++
++	if (is_guest_mode(vcpu) && nested_vmx_exit_reflected(vcpu, exit_reason))
++		return nested_vmx_reflect_vmexit(vcpu, exit_reason);
++
++	if (exit_reason & VMX_EXIT_REASONS_FAILED_VMENTRY) {
++		dump_vmcs();
++		vcpu->run->exit_reason = KVM_EXIT_FAIL_ENTRY;
++		vcpu->run->fail_entry.hardware_entry_failure_reason
++			= exit_reason;
++		return 0;
++	}
++
++	if (unlikely(vmx->fail)) {
++		dump_vmcs();
++		vcpu->run->exit_reason = KVM_EXIT_FAIL_ENTRY;
++		vcpu->run->fail_entry.hardware_entry_failure_reason
++			= vmcs_read32(VM_INSTRUCTION_ERROR);
++		return 0;
++	}
++
++	/*
++	 * Note:
++	 * Do not try to fix EXIT_REASON_EPT_MISCONFIG if it caused by
++	 * delivery event since it indicates guest is accessing MMIO.
++	 * The vm-exit can be triggered again after return to guest that
++	 * will cause infinite loop.
++	 */
++	if ((vectoring_info & VECTORING_INFO_VALID_MASK) &&
++			(exit_reason != EXIT_REASON_EXCEPTION_NMI &&
++			exit_reason != EXIT_REASON_EPT_VIOLATION &&
++			exit_reason != EXIT_REASON_PML_FULL &&
++			exit_reason != EXIT_REASON_TASK_SWITCH)) {
++		vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
++		vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_DELIVERY_EV;
++		vcpu->run->internal.ndata = 3;
++		vcpu->run->internal.data[0] = vectoring_info;
++		vcpu->run->internal.data[1] = exit_reason;
++		vcpu->run->internal.data[2] = vcpu->arch.exit_qualification;
++		if (exit_reason == EXIT_REASON_EPT_MISCONFIG) {
++			vcpu->run->internal.ndata++;
++			vcpu->run->internal.data[3] =
++				vmcs_read64(GUEST_PHYSICAL_ADDRESS);
++		}
++		return 0;
++	}
++
++	if (unlikely(!enable_vnmi &&
++		     vmx->loaded_vmcs->soft_vnmi_blocked)) {
++		if (vmx_interrupt_allowed(vcpu)) {
++			vmx->loaded_vmcs->soft_vnmi_blocked = 0;
++		} else if (vmx->loaded_vmcs->vnmi_blocked_time > 1000000000LL &&
++			   vcpu->arch.nmi_pending) {
++			/*
++			 * This CPU don't support us in finding the end of an
++			 * NMI-blocked window if the guest runs with IRQs
++			 * disabled. So we pull the trigger after 1 s of
++			 * futile waiting, but inform the user about this.
++			 */
++			printk(KERN_WARNING "%s: Breaking out of NMI-blocked "
++			       "state on VCPU %d after 1 s timeout\n",
++			       __func__, vcpu->vcpu_id);
++			vmx->loaded_vmcs->soft_vnmi_blocked = 0;
++		}
++	}
++
++	if (exit_fastpath == EXIT_FASTPATH_SKIP_EMUL_INS) {
++		kvm_skip_emulated_instruction(vcpu);
++		return 1;
++	} else if (exit_reason < kvm_vmx_max_exit_handlers
++	    && kvm_vmx_exit_handlers[exit_reason]) {
++#ifdef CONFIG_RETPOLINE
++		if (exit_reason == EXIT_REASON_MSR_WRITE)
++			return kvm_emulate_wrmsr(vcpu);
++		else if (exit_reason == EXIT_REASON_PREEMPTION_TIMER)
++			return handle_preemption_timer(vcpu);
++		else if (exit_reason == EXIT_REASON_INTERRUPT_WINDOW)
++			return handle_interrupt_window(vcpu);
++		else if (exit_reason == EXIT_REASON_EXTERNAL_INTERRUPT)
++			return handle_external_interrupt(vcpu);
++		else if (exit_reason == EXIT_REASON_HLT)
++			return kvm_emulate_halt(vcpu);
++		else if (exit_reason == EXIT_REASON_EPT_MISCONFIG)
++			return handle_ept_misconfig(vcpu);
++#endif
++		return kvm_vmx_exit_handlers[exit_reason](vcpu);
++	} else {
++		vcpu_unimpl(vcpu, "vmx: unexpected exit reason 0x%x\n",
++				exit_reason);
++		dump_vmcs();
++		vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
++		vcpu->run->internal.suberror =
++			KVM_INTERNAL_ERROR_UNEXPECTED_EXIT_REASON;
++		vcpu->run->internal.ndata = 1;
++		vcpu->run->internal.data[0] = exit_reason;
++		return 0;
++	}
++}
++
++/*
++ * Software based L1D cache flush which is used when microcode providing
++ * the cache control MSR is not loaded.
++ *
++ * The L1D cache is 32 KiB on Nehalem and later microarchitectures, but to
++ * flush it is required to read in 64 KiB because the replacement algorithm
++ * is not exactly LRU. This could be sized at runtime via topology
++ * information but as all relevant affected CPUs have 32KiB L1D cache size
++ * there is no point in doing so.
++ */
++static void vmx_l1d_flush(struct kvm_vcpu *vcpu)
++{
++	int size = PAGE_SIZE << L1D_CACHE_ORDER;
++
++	/*
++	 * This code is only executed when the the flush mode is 'cond' or
++	 * 'always'
++	 */
++	if (static_branch_likely(&vmx_l1d_flush_cond)) {
++		bool flush_l1d;
++
++		/*
++		 * Clear the per-vcpu flush bit, it gets set again
++		 * either from vcpu_run() or from one of the unsafe
++		 * VMEXIT handlers.
++		 */
++		flush_l1d = vcpu->arch.l1tf_flush_l1d;
++		vcpu->arch.l1tf_flush_l1d = false;
++
++		/*
++		 * Clear the per-cpu flush bit, it gets set again from
++		 * the interrupt handlers.
++		 */
++		flush_l1d |= kvm_get_cpu_l1tf_flush_l1d();
++		kvm_clear_cpu_l1tf_flush_l1d();
++
++		if (!flush_l1d)
++			return;
++	}
++
++	vcpu->stat.l1d_flush++;
++
++	if (static_cpu_has(X86_FEATURE_FLUSH_L1D)) {
++		wrmsrl(MSR_IA32_FLUSH_CMD, L1D_FLUSH);
++		return;
++	}
++
++	asm volatile(
++		/* First ensure the pages are in the TLB */
++		"xorl	%%eax, %%eax\n"
++		".Lpopulate_tlb:\n\t"
++		"movzbl	(%[flush_pages], %%" _ASM_AX "), %%ecx\n\t"
++		"addl	$4096, %%eax\n\t"
++		"cmpl	%%eax, %[size]\n\t"
++		"jne	.Lpopulate_tlb\n\t"
++		"xorl	%%eax, %%eax\n\t"
++		"cpuid\n\t"
++		/* Now fill the cache */
++		"xorl	%%eax, %%eax\n"
++		".Lfill_cache:\n"
++		"movzbl	(%[flush_pages], %%" _ASM_AX "), %%ecx\n\t"
++		"addl	$64, %%eax\n\t"
++		"cmpl	%%eax, %[size]\n\t"
++		"jne	.Lfill_cache\n\t"
++		"lfence\n"
++		:: [flush_pages] "r" (vmx_l1d_flush_pages),
++		    [size] "r" (size)
++		: "eax", "ebx", "ecx", "edx");
++}
++
++static void update_cr8_intercept(struct kvm_vcpu *vcpu, int tpr, int irr)
++{
++	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
++	int tpr_threshold;
++
++	if (is_guest_mode(vcpu) &&
++		nested_cpu_has(vmcs12, CPU_BASED_TPR_SHADOW))
++		return;
++
++	tpr_threshold = (irr == -1 || tpr < irr) ? 0 : irr;
++	if (is_guest_mode(vcpu))
++		to_vmx(vcpu)->nested.l1_tpr_threshold = tpr_threshold;
++	else
++		vmcs_write32(TPR_THRESHOLD, tpr_threshold);
++}
++
++void vmx_set_virtual_apic_mode(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	u32 sec_exec_control;
++
++	if (!lapic_in_kernel(vcpu))
++		return;
++
++	if (!flexpriority_enabled &&
++	    !cpu_has_vmx_virtualize_x2apic_mode())
++		return;
++
++	/* Postpone execution until vmcs01 is the current VMCS. */
++	if (is_guest_mode(vcpu)) {
++		vmx->nested.change_vmcs01_virtual_apic_mode = true;
++		return;
++	}
++
++	sec_exec_control = secondary_exec_controls_get(vmx);
++	sec_exec_control &= ~(SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |
++			      SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE);
++
++	switch (kvm_get_apic_mode(vcpu)) {
++	case LAPIC_MODE_INVALID:
++		WARN_ONCE(true, "Invalid local APIC state");
++	case LAPIC_MODE_DISABLED:
++		break;
++	case LAPIC_MODE_XAPIC:
++		if (flexpriority_enabled) {
++			sec_exec_control |=
++				SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES;
++			vmx_flush_tlb(vcpu, true);
++		}
++		break;
++	case LAPIC_MODE_X2APIC:
++		if (cpu_has_vmx_virtualize_x2apic_mode())
++			sec_exec_control |=
++				SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE;
++		break;
++	}
++	secondary_exec_controls_set(vmx, sec_exec_control);
++
++	vmx_update_msr_bitmap(vcpu);
++}
++
++static void vmx_set_apic_access_page_addr(struct kvm_vcpu *vcpu, hpa_t hpa)
++{
++	if (!is_guest_mode(vcpu)) {
++		vmcs_write64(APIC_ACCESS_ADDR, hpa);
++		vmx_flush_tlb(vcpu, true);
++	}
++}
++
++static void vmx_hwapic_isr_update(struct kvm_vcpu *vcpu, int max_isr)
++{
++	u16 status;
++	u8 old;
++
++	if (max_isr == -1)
++		max_isr = 0;
++
++	status = vmcs_read16(GUEST_INTR_STATUS);
++	old = status >> 8;
++	if (max_isr != old) {
++		status &= 0xff;
++		status |= max_isr << 8;
++		vmcs_write16(GUEST_INTR_STATUS, status);
++	}
++}
++
++static void vmx_set_rvi(int vector)
++{
++	u16 status;
++	u8 old;
++
++	if (vector == -1)
++		vector = 0;
++
++	status = vmcs_read16(GUEST_INTR_STATUS);
++	old = (u8)status & 0xff;
++	if ((u8)vector != old) {
++		status &= ~0xff;
++		status |= (u8)vector;
++		vmcs_write16(GUEST_INTR_STATUS, status);
++	}
++}
++
++static void vmx_hwapic_irr_update(struct kvm_vcpu *vcpu, int max_irr)
++{
++	/*
++	 * When running L2, updating RVI is only relevant when
++	 * vmcs12 virtual-interrupt-delivery enabled.
++	 * However, it can be enabled only when L1 also
++	 * intercepts external-interrupts and in that case
++	 * we should not update vmcs02 RVI but instead intercept
++	 * interrupt. Therefore, do nothing when running L2.
++	 */
++	if (!is_guest_mode(vcpu))
++		vmx_set_rvi(max_irr);
++}
++
++static int vmx_sync_pir_to_irr(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	int max_irr;
++	bool max_irr_updated;
++
++	WARN_ON(!vcpu->arch.apicv_active);
++	if (pi_test_on(&vmx->pi_desc)) {
++		pi_clear_on(&vmx->pi_desc);
++		/*
++		 * IOMMU can write to PID.ON, so the barrier matters even on UP.
++		 * But on x86 this is just a compiler barrier anyway.
++		 */
++		smp_mb__after_atomic();
++		max_irr_updated =
++			kvm_apic_update_irr(vcpu, vmx->pi_desc.pir, &max_irr);
++
++		/*
++		 * If we are running L2 and L1 has a new pending interrupt
++		 * which can be injected, we should re-evaluate
++		 * what should be done with this new L1 interrupt.
++		 * If L1 intercepts external-interrupts, we should
++		 * exit from L2 to L1. Otherwise, interrupt should be
++		 * delivered directly to L2.
++		 */
++		if (is_guest_mode(vcpu) && max_irr_updated) {
++			if (nested_exit_on_intr(vcpu))
++				kvm_vcpu_exiting_guest_mode(vcpu);
++			else
++				kvm_make_request(KVM_REQ_EVENT, vcpu);
++		}
++	} else {
++		max_irr = kvm_lapic_find_highest_irr(vcpu);
++	}
++	vmx_hwapic_irr_update(vcpu, max_irr);
++	return max_irr;
++}
++
++static bool vmx_dy_apicv_has_pending_interrupt(struct kvm_vcpu *vcpu)
++{
++	struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
++
++	return pi_test_on(pi_desc) ||
++		(pi_test_sn(pi_desc) && !pi_is_pir_empty(pi_desc));
++}
++
++static void vmx_load_eoi_exitmap(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap)
++{
++	if (!kvm_vcpu_apicv_active(vcpu))
++		return;
++
++	vmcs_write64(EOI_EXIT_BITMAP0, eoi_exit_bitmap[0]);
++	vmcs_write64(EOI_EXIT_BITMAP1, eoi_exit_bitmap[1]);
++	vmcs_write64(EOI_EXIT_BITMAP2, eoi_exit_bitmap[2]);
++	vmcs_write64(EOI_EXIT_BITMAP3, eoi_exit_bitmap[3]);
++}
++
++static void vmx_apicv_post_state_restore(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++
++	pi_clear_on(&vmx->pi_desc);
++	memset(vmx->pi_desc.pir, 0, sizeof(vmx->pi_desc.pir));
++}
++
++static void handle_exception_nmi_irqoff(struct vcpu_vmx *vmx)
++{
++	vmx->exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
++
++	/* if exit due to PF check for async PF */
++	if (is_page_fault(vmx->exit_intr_info))
++		vmx->vcpu.arch.apf.host_apf_reason = kvm_read_and_reset_pf_reason();
++
++	/* Handle machine checks before interrupts are enabled */
++	if (is_machine_check(vmx->exit_intr_info))
++		kvm_machine_check();
++
++	/* We need to handle NMIs before interrupts are enabled */
++	if (is_nmi(vmx->exit_intr_info)) {
++		kvm_before_interrupt(&vmx->vcpu);
++		asm("int $2");
++		kvm_after_interrupt(&vmx->vcpu);
++	}
++}
++
++static void handle_external_interrupt_irqoff(struct kvm_vcpu *vcpu)
++{
++	unsigned int vector;
++	unsigned long entry;
++#ifdef CONFIG_X86_64
++	unsigned long tmp;
++#endif
++	gate_desc *desc;
++	u32 intr_info;
++
++	intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
++	if (WARN_ONCE(!is_external_intr(intr_info),
++	    "KVM: unexpected VM-Exit interrupt info: 0x%x", intr_info))
++		return;
++
++	vector = intr_info & INTR_INFO_VECTOR_MASK;
++	desc = (gate_desc *)host_idt_base + vector;
++	entry = gate_offset(desc);
++
++	kvm_before_interrupt(vcpu);
++
++	asm volatile(
++#ifdef CONFIG_X86_64
++		"mov %%" _ASM_SP ", %[sp]\n\t"
++		"and $0xfffffffffffffff0, %%" _ASM_SP "\n\t"
++		"push $%c[ss]\n\t"
++		"push %[sp]\n\t"
++#endif
++		"pushf\n\t"
++		__ASM_SIZE(push) " $%c[cs]\n\t"
++		CALL_NOSPEC
++		:
++#ifdef CONFIG_X86_64
++		[sp]"=&r"(tmp),
++#endif
++		ASM_CALL_CONSTRAINT
++		:
++		THUNK_TARGET(entry),
++		[ss]"i"(__KERNEL_DS),
++		[cs]"i"(__KERNEL_CS)
++	);
++
++	kvm_after_interrupt(vcpu);
++}
++STACK_FRAME_NON_STANDARD(handle_external_interrupt_irqoff);
++
++static void vmx_handle_exit_irqoff(struct kvm_vcpu *vcpu,
++	enum exit_fastpath_completion *exit_fastpath)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++
++	if (vmx->exit_reason == EXIT_REASON_EXTERNAL_INTERRUPT)
++		handle_external_interrupt_irqoff(vcpu);
++	else if (vmx->exit_reason == EXIT_REASON_EXCEPTION_NMI)
++		handle_exception_nmi_irqoff(vmx);
++	else if (!is_guest_mode(vcpu) &&
++		vmx->exit_reason == EXIT_REASON_MSR_WRITE)
++		*exit_fastpath = handle_fastpath_set_msr_irqoff(vcpu);
++}
++
++static bool vmx_has_emulated_msr(int index)
++{
++	switch (index) {
++	case MSR_IA32_SMBASE:
++		/*
++		 * We cannot do SMM unless we can run the guest in big
++		 * real mode.
++		 */
++		return enable_unrestricted_guest || emulate_invalid_guest_state;
++	case MSR_IA32_VMX_BASIC ... MSR_IA32_VMX_VMFUNC:
++		return nested;
++	case MSR_AMD64_VIRT_SPEC_CTRL:
++		/* This is AMD only.  */
++		return false;
++	default:
++		return true;
++	}
++}
++
++static bool vmx_pt_supported(void)
++{
++	return pt_mode == PT_MODE_HOST_GUEST;
++}
++
++static void vmx_recover_nmi_blocking(struct vcpu_vmx *vmx)
++{
++	u32 exit_intr_info;
++	bool unblock_nmi;
++	u8 vector;
++	bool idtv_info_valid;
++
++	idtv_info_valid = vmx->idt_vectoring_info & VECTORING_INFO_VALID_MASK;
++
++	if (enable_vnmi) {
++		if (vmx->loaded_vmcs->nmi_known_unmasked)
++			return;
++		/*
++		 * Can't use vmx->exit_intr_info since we're not sure what
++		 * the exit reason is.
++		 */
++		exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
++		unblock_nmi = (exit_intr_info & INTR_INFO_UNBLOCK_NMI) != 0;
++		vector = exit_intr_info & INTR_INFO_VECTOR_MASK;
++		/*
++		 * SDM 3: 27.7.1.2 (September 2008)
++		 * Re-set bit "block by NMI" before VM entry if vmexit caused by
++		 * a guest IRET fault.
++		 * SDM 3: 23.2.2 (September 2008)
++		 * Bit 12 is undefined in any of the following cases:
++		 *  If the VM exit sets the valid bit in the IDT-vectoring
++		 *   information field.
++		 *  If the VM exit is due to a double fault.
++		 */
++		if ((exit_intr_info & INTR_INFO_VALID_MASK) && unblock_nmi &&
++		    vector != DF_VECTOR && !idtv_info_valid)
++			vmcs_set_bits(GUEST_INTERRUPTIBILITY_INFO,
++				      GUEST_INTR_STATE_NMI);
++		else
++			vmx->loaded_vmcs->nmi_known_unmasked =
++				!(vmcs_read32(GUEST_INTERRUPTIBILITY_INFO)
++				  & GUEST_INTR_STATE_NMI);
++	} else if (unlikely(vmx->loaded_vmcs->soft_vnmi_blocked))
++		vmx->loaded_vmcs->vnmi_blocked_time +=
++			ktime_to_ns(ktime_sub(ktime_get(),
++					      vmx->loaded_vmcs->entry_time));
++}
++
++static void __vmx_complete_interrupts(struct kvm_vcpu *vcpu,
++				      u32 idt_vectoring_info,
++				      int instr_len_field,
++				      int error_code_field)
++{
++	u8 vector;
++	int type;
++	bool idtv_info_valid;
++
++	idtv_info_valid = idt_vectoring_info & VECTORING_INFO_VALID_MASK;
++
++	vcpu->arch.nmi_injected = false;
++	kvm_clear_exception_queue(vcpu);
++	kvm_clear_interrupt_queue(vcpu);
++
++	if (!idtv_info_valid)
++		return;
++
++	kvm_make_request(KVM_REQ_EVENT, vcpu);
++
++	vector = idt_vectoring_info & VECTORING_INFO_VECTOR_MASK;
++	type = idt_vectoring_info & VECTORING_INFO_TYPE_MASK;
++
++	switch (type) {
++	case INTR_TYPE_NMI_INTR:
++		vcpu->arch.nmi_injected = true;
++		/*
++		 * SDM 3: 27.7.1.2 (September 2008)
++		 * Clear bit "block by NMI" before VM entry if a NMI
++		 * delivery faulted.
++		 */
++		vmx_set_nmi_mask(vcpu, false);
++		break;
++	case INTR_TYPE_SOFT_EXCEPTION:
++		vcpu->arch.event_exit_inst_len = vmcs_read32(instr_len_field);
++		/* fall through */
++	case INTR_TYPE_HARD_EXCEPTION:
++		if (idt_vectoring_info & VECTORING_INFO_DELIVER_CODE_MASK) {
++			u32 err = vmcs_read32(error_code_field);
++			kvm_requeue_exception_e(vcpu, vector, err);
++		} else
++			kvm_requeue_exception(vcpu, vector);
++		break;
++	case INTR_TYPE_SOFT_INTR:
++		vcpu->arch.event_exit_inst_len = vmcs_read32(instr_len_field);
++		/* fall through */
++	case INTR_TYPE_EXT_INTR:
++		kvm_queue_interrupt(vcpu, vector, type == INTR_TYPE_SOFT_INTR);
++		break;
++	default:
++		break;
++	}
++}
++
++static void vmx_complete_interrupts(struct vcpu_vmx *vmx)
++{
++	__vmx_complete_interrupts(&vmx->vcpu, vmx->idt_vectoring_info,
++				  VM_EXIT_INSTRUCTION_LEN,
++				  IDT_VECTORING_ERROR_CODE);
++}
++
++static void vmx_cancel_injection(struct kvm_vcpu *vcpu)
++{
++	__vmx_complete_interrupts(vcpu,
++				  vmcs_read32(VM_ENTRY_INTR_INFO_FIELD),
++				  VM_ENTRY_INSTRUCTION_LEN,
++				  VM_ENTRY_EXCEPTION_ERROR_CODE);
++
++	vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, 0);
++}
++
++static void atomic_switch_perf_msrs(struct vcpu_vmx *vmx)
++{
++	int i, nr_msrs;
++	struct perf_guest_switch_msr *msrs;
++
++	msrs = perf_guest_get_msrs(&nr_msrs);
++
++	if (!msrs)
++		return;
++
++	for (i = 0; i < nr_msrs; i++)
++		if (msrs[i].host == msrs[i].guest)
++			clear_atomic_switch_msr(vmx, msrs[i].msr);
++		else
++			add_atomic_switch_msr(vmx, msrs[i].msr, msrs[i].guest,
++					msrs[i].host, false);
++}
++
++static void atomic_switch_umwait_control_msr(struct vcpu_vmx *vmx)
++{
++	u32 host_umwait_control;
++
++	if (!vmx_has_waitpkg(vmx))
++		return;
++
++	host_umwait_control = get_umwait_control_msr();
++
++	if (vmx->msr_ia32_umwait_control != host_umwait_control)
++		add_atomic_switch_msr(vmx, MSR_IA32_UMWAIT_CONTROL,
++			vmx->msr_ia32_umwait_control,
++			host_umwait_control, false);
++	else
++		clear_atomic_switch_msr(vmx, MSR_IA32_UMWAIT_CONTROL);
++}
++
++static void vmx_update_hv_timer(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	u64 tscl;
++	u32 delta_tsc;
++
++	if (vmx->req_immediate_exit) {
++		vmcs_write32(VMX_PREEMPTION_TIMER_VALUE, 0);
++		vmx->loaded_vmcs->hv_timer_soft_disabled = false;
++	} else if (vmx->hv_deadline_tsc != -1) {
++		tscl = rdtsc();
++		if (vmx->hv_deadline_tsc > tscl)
++			/* set_hv_timer ensures the delta fits in 32-bits */
++			delta_tsc = (u32)((vmx->hv_deadline_tsc - tscl) >>
++				cpu_preemption_timer_multi);
++		else
++			delta_tsc = 0;
++
++		vmcs_write32(VMX_PREEMPTION_TIMER_VALUE, delta_tsc);
++		vmx->loaded_vmcs->hv_timer_soft_disabled = false;
++	} else if (!vmx->loaded_vmcs->hv_timer_soft_disabled) {
++		vmcs_write32(VMX_PREEMPTION_TIMER_VALUE, -1);
++		vmx->loaded_vmcs->hv_timer_soft_disabled = true;
++	}
++}
++
++void vmx_update_host_rsp(struct vcpu_vmx *vmx, unsigned long host_rsp)
++{
++	if (unlikely(host_rsp != vmx->loaded_vmcs->host_state.rsp)) {
++		vmx->loaded_vmcs->host_state.rsp = host_rsp;
++		vmcs_writel(HOST_RSP, host_rsp);
++	}
++}
++
++bool __vmx_vcpu_run(struct vcpu_vmx *vmx, unsigned long *regs, bool launched);
++
++static void vmx_vcpu_run(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	unsigned long cr3, cr4;
++
++	/* Record the guest's net vcpu time for enforced NMI injections. */
++	if (unlikely(!enable_vnmi &&
++		     vmx->loaded_vmcs->soft_vnmi_blocked))
++		vmx->loaded_vmcs->entry_time = ktime_get();
++
++	/* Don't enter VMX if guest state is invalid, let the exit handler
++	   start emulation until we arrive back to a valid state */
++	if (vmx->emulation_required)
++		return;
++
++	if (vmx->ple_window_dirty) {
++		vmx->ple_window_dirty = false;
++		vmcs_write32(PLE_WINDOW, vmx->ple_window);
++	}
++
++	if (vmx->nested.need_vmcs12_to_shadow_sync)
++		nested_sync_vmcs12_to_shadow(vcpu);
++
++	if (kvm_register_is_dirty(vcpu, VCPU_REGS_RSP))
++		vmcs_writel(GUEST_RSP, vcpu->arch.regs[VCPU_REGS_RSP]);
++	if (kvm_register_is_dirty(vcpu, VCPU_REGS_RIP))
++		vmcs_writel(GUEST_RIP, vcpu->arch.regs[VCPU_REGS_RIP]);
++
++	cr3 = __get_current_cr3_fast();
++	if (unlikely(cr3 != vmx->loaded_vmcs->host_state.cr3)) {
++		vmcs_writel(HOST_CR3, cr3);
++		vmx->loaded_vmcs->host_state.cr3 = cr3;
++	}
++
++	cr4 = cr4_read_shadow();
++	if (unlikely(cr4 != vmx->loaded_vmcs->host_state.cr4)) {
++		vmcs_writel(HOST_CR4, cr4);
++		vmx->loaded_vmcs->host_state.cr4 = cr4;
++	}
++
++	/* When single-stepping over STI and MOV SS, we must clear the
++	 * corresponding interruptibility bits in the guest state. Otherwise
++	 * vmentry fails as it then expects bit 14 (BS) in pending debug
++	 * exceptions being set, but that's not correct for the guest debugging
++	 * case. */
++	if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
++		vmx_set_interrupt_shadow(vcpu, 0);
++
++	kvm_load_guest_xsave_state(vcpu);
++
++	if (static_cpu_has(X86_FEATURE_PKU) &&
++	    kvm_read_cr4_bits(vcpu, X86_CR4_PKE) &&
++	    vcpu->arch.pkru != vmx->host_pkru)
++		__write_pkru(vcpu->arch.pkru);
++
++	pt_guest_enter(vmx);
++
++	atomic_switch_perf_msrs(vmx);
++	atomic_switch_umwait_control_msr(vmx);
++
++	if (enable_preemption_timer)
++		vmx_update_hv_timer(vcpu);
++
++	if (lapic_in_kernel(vcpu) &&
++		vcpu->arch.apic->lapic_timer.timer_advance_ns)
++		kvm_wait_lapic_expire(vcpu);
++
++	/*
++	 * If this vCPU has touched SPEC_CTRL, restore the guest's value if
++	 * it's non-zero. Since vmentry is serialising on affected CPUs, there
++	 * is no need to worry about the conditional branch over the wrmsr
++	 * being speculatively taken.
++	 */
++	x86_spec_ctrl_set_guest(vmx->spec_ctrl, 0);
++
++	/* L1D Flush includes CPU buffer clear to mitigate MDS */
++	if (static_branch_unlikely(&vmx_l1d_should_flush))
++		vmx_l1d_flush(vcpu);
++	else if (static_branch_unlikely(&mds_user_clear))
++		mds_clear_cpu_buffers();
++
++	if (vcpu->arch.cr2 != read_cr2())
++		write_cr2(vcpu->arch.cr2);
++
++	vmx->fail = __vmx_vcpu_run(vmx, (unsigned long *)&vcpu->arch.regs,
++				   vmx->loaded_vmcs->launched);
++
++	vcpu->arch.cr2 = read_cr2();
++
++	/*
++	 * We do not use IBRS in the kernel. If this vCPU has used the
++	 * SPEC_CTRL MSR it may have left it on; save the value and
++	 * turn it off. This is much more efficient than blindly adding
++	 * it to the atomic save/restore list. Especially as the former
++	 * (Saving guest MSRs on vmexit) doesn't even exist in KVM.
++	 *
++	 * For non-nested case:
++	 * If the L01 MSR bitmap does not intercept the MSR, then we need to
++	 * save it.
++	 *
++	 * For nested case:
++	 * If the L02 MSR bitmap does not intercept the MSR, then we need to
++	 * save it.
++	 */
++	if (unlikely(!msr_write_intercepted(vcpu, MSR_IA32_SPEC_CTRL)))
++		vmx->spec_ctrl = native_read_msr(MSR_IA32_SPEC_CTRL);
++
++	x86_spec_ctrl_restore_host(vmx->spec_ctrl, 0);
++
++	/* All fields are clean at this point */
++	if (static_branch_unlikely(&enable_evmcs))
++		current_evmcs->hv_clean_fields |=
++			HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL;
++
++	if (static_branch_unlikely(&enable_evmcs))
++		current_evmcs->hv_vp_id = vcpu->arch.hyperv.vp_index;
++
++	/* MSR_IA32_DEBUGCTLMSR is zeroed on vmexit. Restore it if needed */
++	if (vmx->host_debugctlmsr)
++		update_debugctlmsr(vmx->host_debugctlmsr);
++
++#ifndef CONFIG_X86_64
++	/*
++	 * The sysexit path does not restore ds/es, so we must set them to
++	 * a reasonable value ourselves.
++	 *
++	 * We can't defer this to vmx_prepare_switch_to_host() since that
++	 * function may be executed in interrupt context, which saves and
++	 * restore segments around it, nullifying its effect.
++	 */
++	loadsegment(ds, __USER_DS);
++	loadsegment(es, __USER_DS);
++#endif
++
++	vcpu->arch.regs_avail = ~((1 << VCPU_REGS_RIP) | (1 << VCPU_REGS_RSP)
++				  | (1 << VCPU_EXREG_RFLAGS)
++				  | (1 << VCPU_EXREG_PDPTR)
++				  | (1 << VCPU_EXREG_SEGMENTS)
++				  | (1 << VCPU_EXREG_CR3));
++	vcpu->arch.regs_dirty = 0;
++
++	pt_guest_exit(vmx);
++
++	/*
++	 * eager fpu is enabled if PKEY is supported and CR4 is switched
++	 * back on host, so it is safe to read guest PKRU from current
++	 * XSAVE.
++	 */
++	if (static_cpu_has(X86_FEATURE_PKU) &&
++	    kvm_read_cr4_bits(vcpu, X86_CR4_PKE)) {
++		vcpu->arch.pkru = rdpkru();
++		if (vcpu->arch.pkru != vmx->host_pkru)
++			__write_pkru(vmx->host_pkru);
++	}
++
++	kvm_load_host_xsave_state(vcpu);
++
++	vmx->nested.nested_run_pending = 0;
++	vmx->idt_vectoring_info = 0;
++
++	vmx->exit_reason = vmx->fail ? 0xdead : vmcs_read32(VM_EXIT_REASON);
++	if ((u16)vmx->exit_reason == EXIT_REASON_MCE_DURING_VMENTRY)
++		kvm_machine_check();
++
++	if (vmx->fail || (vmx->exit_reason & VMX_EXIT_REASONS_FAILED_VMENTRY))
++		return;
++
++	vmx->loaded_vmcs->launched = 1;
++	vmx->idt_vectoring_info = vmcs_read32(IDT_VECTORING_INFO_FIELD);
++
++	vmx_recover_nmi_blocking(vmx);
++	vmx_complete_interrupts(vmx);
++}
++
++static struct kvm *vmx_vm_alloc(void)
++{
++	struct kvm_vmx *kvm_vmx = __vmalloc(sizeof(struct kvm_vmx),
++					    GFP_KERNEL_ACCOUNT | __GFP_ZERO,
++					    PAGE_KERNEL);
++	return &kvm_vmx->kvm;
++}
++
++static void vmx_vm_free(struct kvm *kvm)
++{
++	kfree(kvm->arch.hyperv.hv_pa_pg);
++	vfree(to_kvm_vmx(kvm));
++}
++
++static void vmx_free_vcpu(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++
++	if (enable_pml)
++		vmx_destroy_pml_buffer(vmx);
++	free_vpid(vmx->vpid);
++	nested_vmx_free_vcpu(vcpu);
++	free_loaded_vmcs(vmx->loaded_vmcs);
++	kvm_vcpu_uninit(vcpu);
++	kmem_cache_free(x86_fpu_cache, vmx->vcpu.arch.user_fpu);
++	kmem_cache_free(x86_fpu_cache, vmx->vcpu.arch.guest_fpu);
++	kmem_cache_free(kvm_vcpu_cache, vmx);
++}
++
++static struct kvm_vcpu *vmx_create_vcpu(struct kvm *kvm, unsigned int id)
++{
++	int err;
++	struct vcpu_vmx *vmx;
++	unsigned long *msr_bitmap;
++	int i, cpu;
++
++	BUILD_BUG_ON_MSG(offsetof(struct vcpu_vmx, vcpu) != 0,
++		"struct kvm_vcpu must be at offset 0 for arch usercopy region");
++
++	vmx = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL_ACCOUNT);
++	if (!vmx)
++		return ERR_PTR(-ENOMEM);
++
++	vmx->vcpu.arch.user_fpu = kmem_cache_zalloc(x86_fpu_cache,
++			GFP_KERNEL_ACCOUNT);
++	if (!vmx->vcpu.arch.user_fpu) {
++		printk(KERN_ERR "kvm: failed to allocate kvm userspace's fpu\n");
++		err = -ENOMEM;
++		goto free_partial_vcpu;
++	}
++
++	vmx->vcpu.arch.guest_fpu = kmem_cache_zalloc(x86_fpu_cache,
++			GFP_KERNEL_ACCOUNT);
++	if (!vmx->vcpu.arch.guest_fpu) {
++		printk(KERN_ERR "kvm: failed to allocate vcpu's fpu\n");
++		err = -ENOMEM;
++		goto free_user_fpu;
++	}
++
++	vmx->vpid = allocate_vpid();
++
++	err = kvm_vcpu_init(&vmx->vcpu, kvm, id);
++	if (err)
++		goto free_vcpu;
++
++	err = -ENOMEM;
++
++	/*
++	 * If PML is turned on, failure on enabling PML just results in failure
++	 * of creating the vcpu, therefore we can simplify PML logic (by
++	 * avoiding dealing with cases, such as enabling PML partially on vcpus
++	 * for the guest), etc.
++	 */
++	if (enable_pml) {
++		vmx->pml_pg = alloc_page(GFP_KERNEL_ACCOUNT | __GFP_ZERO);
++		if (!vmx->pml_pg)
++			goto uninit_vcpu;
++	}
++
++	BUILD_BUG_ON(ARRAY_SIZE(vmx_msr_index) != NR_SHARED_MSRS);
++
++	for (i = 0; i < ARRAY_SIZE(vmx_msr_index); ++i) {
++		u32 index = vmx_msr_index[i];
++		u32 data_low, data_high;
++		int j = vmx->nmsrs;
++
++		if (rdmsr_safe(index, &data_low, &data_high) < 0)
++			continue;
++		if (wrmsr_safe(index, data_low, data_high) < 0)
++			continue;
++
++		vmx->guest_msrs[j].index = i;
++		vmx->guest_msrs[j].data = 0;
++		switch (index) {
++		case MSR_IA32_TSX_CTRL:
++			/*
++			 * No need to pass TSX_CTRL_CPUID_CLEAR through, so
++			 * let's avoid changing CPUID bits under the host
++			 * kernel's feet.
++			 */
++			vmx->guest_msrs[j].mask = ~(u64)TSX_CTRL_CPUID_CLEAR;
++			break;
++		default:
++			vmx->guest_msrs[j].mask = -1ull;
++			break;
++		}
++		++vmx->nmsrs;
++	}
++
++	err = alloc_loaded_vmcs(&vmx->vmcs01);
++	if (err < 0)
++		goto free_pml;
++
++	msr_bitmap = vmx->vmcs01.msr_bitmap;
++	vmx_disable_intercept_for_msr(msr_bitmap, MSR_IA32_TSC, MSR_TYPE_R);
++	vmx_disable_intercept_for_msr(msr_bitmap, MSR_FS_BASE, MSR_TYPE_RW);
++	vmx_disable_intercept_for_msr(msr_bitmap, MSR_GS_BASE, MSR_TYPE_RW);
++	vmx_disable_intercept_for_msr(msr_bitmap, MSR_KERNEL_GS_BASE, MSR_TYPE_RW);
++	vmx_disable_intercept_for_msr(msr_bitmap, MSR_IA32_SYSENTER_CS, MSR_TYPE_RW);
++	vmx_disable_intercept_for_msr(msr_bitmap, MSR_IA32_SYSENTER_ESP, MSR_TYPE_RW);
++	vmx_disable_intercept_for_msr(msr_bitmap, MSR_IA32_SYSENTER_EIP, MSR_TYPE_RW);
++	if (kvm_cstate_in_guest(kvm)) {
++		vmx_disable_intercept_for_msr(msr_bitmap, MSR_CORE_C1_RES, MSR_TYPE_R);
++		vmx_disable_intercept_for_msr(msr_bitmap, MSR_CORE_C3_RESIDENCY, MSR_TYPE_R);
++		vmx_disable_intercept_for_msr(msr_bitmap, MSR_CORE_C6_RESIDENCY, MSR_TYPE_R);
++		vmx_disable_intercept_for_msr(msr_bitmap, MSR_CORE_C7_RESIDENCY, MSR_TYPE_R);
++	}
++	vmx->msr_bitmap_mode = 0;
++
++	vmx->loaded_vmcs = &vmx->vmcs01;
++	cpu = get_cpu();
++	vmx_vcpu_load(&vmx->vcpu, cpu);
++	vmx->vcpu.cpu = cpu;
++	init_vmcs(vmx);
++	vmx_vcpu_put(&vmx->vcpu);
++	put_cpu();
++	if (cpu_need_virtualize_apic_accesses(&vmx->vcpu)) {
++		err = alloc_apic_access_page(kvm);
++		if (err)
++			goto free_vmcs;
++	}
++
++	if (enable_ept && !enable_unrestricted_guest) {
++		err = init_rmode_identity_map(kvm);
++		if (err)
++			goto free_vmcs;
++	}
++
++	if (nested)
++		nested_vmx_setup_ctls_msrs(&vmx->nested.msrs,
++					   vmx_capability.ept,
++					   kvm_vcpu_apicv_active(&vmx->vcpu));
++	else
++		memset(&vmx->nested.msrs, 0, sizeof(vmx->nested.msrs));
++
++	vmx->nested.posted_intr_nv = -1;
++	vmx->nested.current_vmptr = -1ull;
++
++	vmx->msr_ia32_feature_control_valid_bits = FEATURE_CONTROL_LOCKED;
++
++	/*
++	 * Enforce invariant: pi_desc.nv is always either POSTED_INTR_VECTOR
++	 * or POSTED_INTR_WAKEUP_VECTOR.
++	 */
++	vmx->pi_desc.nv = POSTED_INTR_VECTOR;
++	vmx->pi_desc.sn = 1;
++
++	vmx->ept_pointer = INVALID_PAGE;
++
++	return &vmx->vcpu;
++
++free_vmcs:
++	free_loaded_vmcs(vmx->loaded_vmcs);
++free_pml:
++	vmx_destroy_pml_buffer(vmx);
++uninit_vcpu:
++	kvm_vcpu_uninit(&vmx->vcpu);
++free_vcpu:
++	free_vpid(vmx->vpid);
++	kmem_cache_free(x86_fpu_cache, vmx->vcpu.arch.guest_fpu);
++free_user_fpu:
++	kmem_cache_free(x86_fpu_cache, vmx->vcpu.arch.user_fpu);
++free_partial_vcpu:
++	kmem_cache_free(kvm_vcpu_cache, vmx);
++	return ERR_PTR(err);
++}
++
++#define L1TF_MSG_SMT "L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details.\n"
++#define L1TF_MSG_L1D "L1TF CPU bug present and virtualization mitigation disabled, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details.\n"
++
++static int vmx_vm_init(struct kvm *kvm)
++{
++	spin_lock_init(&to_kvm_vmx(kvm)->ept_pointer_lock);
++
++	if (!ple_gap)
++		kvm->arch.pause_in_guest = true;
++
++	if (boot_cpu_has(X86_BUG_L1TF) && enable_ept) {
++		switch (l1tf_mitigation) {
++		case L1TF_MITIGATION_OFF:
++		case L1TF_MITIGATION_FLUSH_NOWARN:
++			/* 'I explicitly don't care' is set */
++			break;
++		case L1TF_MITIGATION_FLUSH:
++		case L1TF_MITIGATION_FLUSH_NOSMT:
++		case L1TF_MITIGATION_FULL:
++			/*
++			 * Warn upon starting the first VM in a potentially
++			 * insecure environment.
++			 */
++			if (sched_smt_active())
++				pr_warn_once(L1TF_MSG_SMT);
++			if (l1tf_vmx_mitigation == VMENTER_L1D_FLUSH_NEVER)
++				pr_warn_once(L1TF_MSG_L1D);
++			break;
++		case L1TF_MITIGATION_FULL_FORCE:
++			/* Flush is enforced */
++			break;
++		}
++	}
++	return 0;
++}
++
++static int __init vmx_check_processor_compat(void)
++{
++	struct vmcs_config vmcs_conf;
++	struct vmx_capability vmx_cap;
++
++	if (setup_vmcs_config(&vmcs_conf, &vmx_cap) < 0)
++		return -EIO;
++	if (nested)
++		nested_vmx_setup_ctls_msrs(&vmcs_conf.nested, vmx_cap.ept,
++					   enable_apicv);
++	if (memcmp(&vmcs_config, &vmcs_conf, sizeof(struct vmcs_config)) != 0) {
++		printk(KERN_ERR "kvm: CPU %d feature inconsistency!\n",
++				smp_processor_id());
++		return -EIO;
++	}
++	return 0;
++}
++
++static u64 vmx_get_mt_mask(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio)
++{
++	u8 cache;
++	u64 ipat = 0;
++
++	/* For VT-d and EPT combination
++	 * 1. MMIO: always map as UC
++	 * 2. EPT with VT-d:
++	 *   a. VT-d without snooping control feature: can't guarantee the
++	 *	result, try to trust guest.
++	 *   b. VT-d with snooping control feature: snooping control feature of
++	 *	VT-d engine can guarantee the cache correctness. Just set it
++	 *	to WB to keep consistent with host. So the same as item 3.
++	 * 3. EPT without VT-d: always map as WB and set IPAT=1 to keep
++	 *    consistent with host MTRR
++	 */
++	if (is_mmio) {
++		cache = MTRR_TYPE_UNCACHABLE;
++		goto exit;
++	}
++
++	if (!kvm_arch_has_noncoherent_dma(vcpu->kvm)) {
++		ipat = VMX_EPT_IPAT_BIT;
++		cache = MTRR_TYPE_WRBACK;
++		goto exit;
++	}
++
++	if (kvm_read_cr0(vcpu) & X86_CR0_CD) {
++		ipat = VMX_EPT_IPAT_BIT;
++		if (kvm_check_has_quirk(vcpu->kvm, KVM_X86_QUIRK_CD_NW_CLEARED))
++			cache = MTRR_TYPE_WRBACK;
++		else
++			cache = MTRR_TYPE_UNCACHABLE;
++		goto exit;
++	}
++
++	cache = kvm_mtrr_get_guest_memory_type(vcpu, gfn);
++
++exit:
++	return (cache << VMX_EPT_MT_EPTE_SHIFT) | ipat;
++}
++
++static int vmx_get_lpage_level(void)
++{
++	if (enable_ept && !cpu_has_vmx_ept_1g_page())
++		return PT_DIRECTORY_LEVEL;
++	else
++		/* For shadow and EPT supported 1GB page */
++		return PT_PDPE_LEVEL;
++}
++
++static void vmcs_set_secondary_exec_control(struct vcpu_vmx *vmx)
++{
++	/*
++	 * These bits in the secondary execution controls field
++	 * are dynamic, the others are mostly based on the hypervisor
++	 * architecture and the guest's CPUID.  Do not touch the
++	 * dynamic bits.
++	 */
++	u32 mask =
++		SECONDARY_EXEC_SHADOW_VMCS |
++		SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE |
++		SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |
++		SECONDARY_EXEC_DESC;
++
++	u32 new_ctl = vmx->secondary_exec_control;
++	u32 cur_ctl = secondary_exec_controls_get(vmx);
++
++	secondary_exec_controls_set(vmx, (new_ctl & ~mask) | (cur_ctl & mask));
++}
++
++/*
++ * Generate MSR_IA32_VMX_CR{0,4}_FIXED1 according to CPUID. Only set bits
++ * (indicating "allowed-1") if they are supported in the guest's CPUID.
++ */
++static void nested_vmx_cr_fixed1_bits_update(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	struct kvm_cpuid_entry2 *entry;
++
++	vmx->nested.msrs.cr0_fixed1 = 0xffffffff;
++	vmx->nested.msrs.cr4_fixed1 = X86_CR4_PCE;
++
++#define cr4_fixed1_update(_cr4_mask, _reg, _cpuid_mask) do {		\
++	if (entry && (entry->_reg & (_cpuid_mask)))			\
++		vmx->nested.msrs.cr4_fixed1 |= (_cr4_mask);	\
++} while (0)
++
++	entry = kvm_find_cpuid_entry(vcpu, 0x1, 0);
++	cr4_fixed1_update(X86_CR4_VME,        edx, bit(X86_FEATURE_VME));
++	cr4_fixed1_update(X86_CR4_PVI,        edx, bit(X86_FEATURE_VME));
++	cr4_fixed1_update(X86_CR4_TSD,        edx, bit(X86_FEATURE_TSC));
++	cr4_fixed1_update(X86_CR4_DE,         edx, bit(X86_FEATURE_DE));
++	cr4_fixed1_update(X86_CR4_PSE,        edx, bit(X86_FEATURE_PSE));
++	cr4_fixed1_update(X86_CR4_PAE,        edx, bit(X86_FEATURE_PAE));
++	cr4_fixed1_update(X86_CR4_MCE,        edx, bit(X86_FEATURE_MCE));
++	cr4_fixed1_update(X86_CR4_PGE,        edx, bit(X86_FEATURE_PGE));
++	cr4_fixed1_update(X86_CR4_OSFXSR,     edx, bit(X86_FEATURE_FXSR));
++	cr4_fixed1_update(X86_CR4_OSXMMEXCPT, edx, bit(X86_FEATURE_XMM));
++	cr4_fixed1_update(X86_CR4_VMXE,       ecx, bit(X86_FEATURE_VMX));
++	cr4_fixed1_update(X86_CR4_SMXE,       ecx, bit(X86_FEATURE_SMX));
++	cr4_fixed1_update(X86_CR4_PCIDE,      ecx, bit(X86_FEATURE_PCID));
++	cr4_fixed1_update(X86_CR4_OSXSAVE,    ecx, bit(X86_FEATURE_XSAVE));
++
++	entry = kvm_find_cpuid_entry(vcpu, 0x7, 0);
++	cr4_fixed1_update(X86_CR4_FSGSBASE,   ebx, bit(X86_FEATURE_FSGSBASE));
++	cr4_fixed1_update(X86_CR4_SMEP,       ebx, bit(X86_FEATURE_SMEP));
++	cr4_fixed1_update(X86_CR4_SMAP,       ebx, bit(X86_FEATURE_SMAP));
++	cr4_fixed1_update(X86_CR4_PKE,        ecx, bit(X86_FEATURE_PKU));
++	cr4_fixed1_update(X86_CR4_UMIP,       ecx, bit(X86_FEATURE_UMIP));
++	cr4_fixed1_update(X86_CR4_LA57,       ecx, bit(X86_FEATURE_LA57));
++
++#undef cr4_fixed1_update
++}
++
++static void nested_vmx_entry_exit_ctls_update(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++
++	if (kvm_mpx_supported()) {
++		bool mpx_enabled = guest_cpuid_has(vcpu, X86_FEATURE_MPX);
++
++		if (mpx_enabled) {
++			vmx->nested.msrs.entry_ctls_high |= VM_ENTRY_LOAD_BNDCFGS;
++			vmx->nested.msrs.exit_ctls_high |= VM_EXIT_CLEAR_BNDCFGS;
++		} else {
++			vmx->nested.msrs.entry_ctls_high &= ~VM_ENTRY_LOAD_BNDCFGS;
++			vmx->nested.msrs.exit_ctls_high &= ~VM_EXIT_CLEAR_BNDCFGS;
++		}
++	}
++}
++
++static void update_intel_pt_cfg(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	struct kvm_cpuid_entry2 *best = NULL;
++	int i;
++
++	for (i = 0; i < PT_CPUID_LEAVES; i++) {
++		best = kvm_find_cpuid_entry(vcpu, 0x14, i);
++		if (!best)
++			return;
++		vmx->pt_desc.caps[CPUID_EAX + i*PT_CPUID_REGS_NUM] = best->eax;
++		vmx->pt_desc.caps[CPUID_EBX + i*PT_CPUID_REGS_NUM] = best->ebx;
++		vmx->pt_desc.caps[CPUID_ECX + i*PT_CPUID_REGS_NUM] = best->ecx;
++		vmx->pt_desc.caps[CPUID_EDX + i*PT_CPUID_REGS_NUM] = best->edx;
++	}
++
++	/* Get the number of configurable Address Ranges for filtering */
++	vmx->pt_desc.addr_range = intel_pt_validate_cap(vmx->pt_desc.caps,
++						PT_CAP_num_address_ranges);
++
++	/* Initialize and clear the no dependency bits */
++	vmx->pt_desc.ctl_bitmask = ~(RTIT_CTL_TRACEEN | RTIT_CTL_OS |
++			RTIT_CTL_USR | RTIT_CTL_TSC_EN | RTIT_CTL_DISRETC);
++
++	/*
++	 * If CPUID.(EAX=14H,ECX=0):EBX[0]=1 CR3Filter can be set otherwise
++	 * will inject an #GP
++	 */
++	if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_cr3_filtering))
++		vmx->pt_desc.ctl_bitmask &= ~RTIT_CTL_CR3EN;
++
++	/*
++	 * If CPUID.(EAX=14H,ECX=0):EBX[1]=1 CYCEn, CycThresh and
++	 * PSBFreq can be set
++	 */
++	if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_psb_cyc))
++		vmx->pt_desc.ctl_bitmask &= ~(RTIT_CTL_CYCLEACC |
++				RTIT_CTL_CYC_THRESH | RTIT_CTL_PSB_FREQ);
++
++	/*
++	 * If CPUID.(EAX=14H,ECX=0):EBX[3]=1 MTCEn BranchEn and
++	 * MTCFreq can be set
++	 */
++	if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_mtc))
++		vmx->pt_desc.ctl_bitmask &= ~(RTIT_CTL_MTC_EN |
++				RTIT_CTL_BRANCH_EN | RTIT_CTL_MTC_RANGE);
++
++	/* If CPUID.(EAX=14H,ECX=0):EBX[4]=1 FUPonPTW and PTWEn can be set */
++	if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_ptwrite))
++		vmx->pt_desc.ctl_bitmask &= ~(RTIT_CTL_FUP_ON_PTW |
++							RTIT_CTL_PTW_EN);
++
++	/* If CPUID.(EAX=14H,ECX=0):EBX[5]=1 PwrEvEn can be set */
++	if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_power_event_trace))
++		vmx->pt_desc.ctl_bitmask &= ~RTIT_CTL_PWR_EVT_EN;
++
++	/* If CPUID.(EAX=14H,ECX=0):ECX[0]=1 ToPA can be set */
++	if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_topa_output))
++		vmx->pt_desc.ctl_bitmask &= ~RTIT_CTL_TOPA;
++
++	/* If CPUID.(EAX=14H,ECX=0):ECX[3]=1 FabircEn can be set */
++	if (intel_pt_validate_cap(vmx->pt_desc.caps, PT_CAP_output_subsys))
++		vmx->pt_desc.ctl_bitmask &= ~RTIT_CTL_FABRIC_EN;
++
++	/* unmask address range configure area */
++	for (i = 0; i < vmx->pt_desc.addr_range; i++)
++		vmx->pt_desc.ctl_bitmask &= ~(0xfULL << (32 + i * 4));
++}
++
++static void vmx_cpuid_update(struct kvm_vcpu *vcpu)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++
++	/* xsaves_enabled is recomputed in vmx_compute_secondary_exec_control(). */
++	vcpu->arch.xsaves_enabled = false;
++
++	if (cpu_has_secondary_exec_ctrls()) {
++		vmx_compute_secondary_exec_control(vmx);
++		vmcs_set_secondary_exec_control(vmx);
++	}
++
++	if (nested_vmx_allowed(vcpu))
++		to_vmx(vcpu)->msr_ia32_feature_control_valid_bits |=
++			FEATURE_CONTROL_VMXON_ENABLED_INSIDE_SMX |
++			FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX;
++	else
++		to_vmx(vcpu)->msr_ia32_feature_control_valid_bits &=
++			~(FEATURE_CONTROL_VMXON_ENABLED_INSIDE_SMX |
++			  FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX);
++
++	if (nested_vmx_allowed(vcpu)) {
++		nested_vmx_cr_fixed1_bits_update(vcpu);
++		nested_vmx_entry_exit_ctls_update(vcpu);
++	}
++
++	if (boot_cpu_has(X86_FEATURE_INTEL_PT) &&
++			guest_cpuid_has(vcpu, X86_FEATURE_INTEL_PT))
++		update_intel_pt_cfg(vcpu);
++
++	if (boot_cpu_has(X86_FEATURE_RTM)) {
++		struct shared_msr_entry *msr;
++		msr = find_msr_entry(vmx, MSR_IA32_TSX_CTRL);
++		if (msr) {
++			bool enabled = guest_cpuid_has(vcpu, X86_FEATURE_RTM);
++			vmx_set_guest_msr(vmx, msr, enabled ? 0 : TSX_CTRL_RTM_DISABLE);
++		}
++	}
++}
++
++static void vmx_set_supported_cpuid(u32 func, struct kvm_cpuid_entry2 *entry)
++{
++	if (func == 1 && nested)
++		entry->ecx |= bit(X86_FEATURE_VMX);
++}
++
++static void vmx_request_immediate_exit(struct kvm_vcpu *vcpu)
++{
++	to_vmx(vcpu)->req_immediate_exit = true;
++}
++
++static int vmx_check_intercept(struct kvm_vcpu *vcpu,
++			       struct x86_instruction_info *info,
++			       enum x86_intercept_stage stage)
++{
++	struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
++	struct x86_emulate_ctxt *ctxt = &vcpu->arch.emulate_ctxt;
++
++	/*
++	 * RDPID causes #UD if disabled through secondary execution controls.
++	 * Because it is marked as EmulateOnUD, we need to intercept it here.
++	 */
++	if (info->intercept == x86_intercept_rdtscp &&
++	    !nested_cpu_has2(vmcs12, SECONDARY_EXEC_RDTSCP)) {
++		ctxt->exception.vector = UD_VECTOR;
++		ctxt->exception.error_code_valid = false;
++		return X86EMUL_PROPAGATE_FAULT;
++	}
++
++	/* TODO: check more intercepts... */
++	return X86EMUL_CONTINUE;
++}
++
++#ifdef CONFIG_X86_64
++/* (a << shift) / divisor, return 1 if overflow otherwise 0 */
++static inline int u64_shl_div_u64(u64 a, unsigned int shift,
++				  u64 divisor, u64 *result)
++{
++	u64 low = a << shift, high = a >> (64 - shift);
++
++	/* To avoid the overflow on divq */
++	if (high >= divisor)
++		return 1;
++
++	/* Low hold the result, high hold rem which is discarded */
++	asm("divq %2\n\t" : "=a" (low), "=d" (high) :
++	    "rm" (divisor), "0" (low), "1" (high));
++	*result = low;
++
++	return 0;
++}
++
++static int vmx_set_hv_timer(struct kvm_vcpu *vcpu, u64 guest_deadline_tsc,
++			    bool *expired)
++{
++	struct vcpu_vmx *vmx;
++	u64 tscl, guest_tscl, delta_tsc, lapic_timer_advance_cycles;
++	struct kvm_timer *ktimer = &vcpu->arch.apic->lapic_timer;
++
++	if (kvm_mwait_in_guest(vcpu->kvm) ||
++		kvm_can_post_timer_interrupt(vcpu))
++		return -EOPNOTSUPP;
++
++	vmx = to_vmx(vcpu);
++	tscl = rdtsc();
++	guest_tscl = kvm_read_l1_tsc(vcpu, tscl);
++	delta_tsc = max(guest_deadline_tsc, guest_tscl) - guest_tscl;
++	lapic_timer_advance_cycles = nsec_to_cycles(vcpu,
++						    ktimer->timer_advance_ns);
++
++	if (delta_tsc > lapic_timer_advance_cycles)
++		delta_tsc -= lapic_timer_advance_cycles;
++	else
++		delta_tsc = 0;
++
++	/* Convert to host delta tsc if tsc scaling is enabled */
++	if (vcpu->arch.tsc_scaling_ratio != kvm_default_tsc_scaling_ratio &&
++	    delta_tsc && u64_shl_div_u64(delta_tsc,
++				kvm_tsc_scaling_ratio_frac_bits,
++				vcpu->arch.tsc_scaling_ratio, &delta_tsc))
++		return -ERANGE;
++
++	/*
++	 * If the delta tsc can't fit in the 32 bit after the multi shift,
++	 * we can't use the preemption timer.
++	 * It's possible that it fits on later vmentries, but checking
++	 * on every vmentry is costly so we just use an hrtimer.
++	 */
++	if (delta_tsc >> (cpu_preemption_timer_multi + 32))
++		return -ERANGE;
++
++	vmx->hv_deadline_tsc = tscl + delta_tsc;
++	*expired = !delta_tsc;
++	return 0;
++}
++
++static void vmx_cancel_hv_timer(struct kvm_vcpu *vcpu)
++{
++	to_vmx(vcpu)->hv_deadline_tsc = -1;
++}
++#endif
++
++static void vmx_sched_in(struct kvm_vcpu *vcpu, int cpu)
++{
++	if (!kvm_pause_in_guest(vcpu->kvm))
++		shrink_ple_window(vcpu);
++}
++
++static void vmx_slot_enable_log_dirty(struct kvm *kvm,
++				     struct kvm_memory_slot *slot)
++{
++	kvm_mmu_slot_leaf_clear_dirty(kvm, slot);
++	kvm_mmu_slot_largepage_remove_write_access(kvm, slot);
++}
++
++static void vmx_slot_disable_log_dirty(struct kvm *kvm,
++				       struct kvm_memory_slot *slot)
++{
++	kvm_mmu_slot_set_dirty(kvm, slot);
++}
++
++static void vmx_flush_log_dirty(struct kvm *kvm)
++{
++	kvm_flush_pml_buffers(kvm);
++}
++
++static int vmx_write_pml_buffer(struct kvm_vcpu *vcpu)
++{
++	struct vmcs12 *vmcs12;
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	gpa_t gpa, dst;
++
++	if (is_guest_mode(vcpu)) {
++		WARN_ON_ONCE(vmx->nested.pml_full);
++
++		/*
++		 * Check if PML is enabled for the nested guest.
++		 * Whether eptp bit 6 is set is already checked
++		 * as part of A/D emulation.
++		 */
++		vmcs12 = get_vmcs12(vcpu);
++		if (!nested_cpu_has_pml(vmcs12))
++			return 0;
++
++		if (vmcs12->guest_pml_index >= PML_ENTITY_NUM) {
++			vmx->nested.pml_full = true;
++			return 1;
++		}
++
++		gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS) & ~0xFFFull;
++		dst = vmcs12->pml_address + sizeof(u64) * vmcs12->guest_pml_index;
++
++		if (kvm_write_guest_page(vcpu->kvm, gpa_to_gfn(dst), &gpa,
++					 offset_in_page(dst), sizeof(gpa)))
++			return 0;
++
++		vmcs12->guest_pml_index--;
++	}
++
++	return 0;
++}
++
++static void vmx_enable_log_dirty_pt_masked(struct kvm *kvm,
++					   struct kvm_memory_slot *memslot,
++					   gfn_t offset, unsigned long mask)
++{
++	kvm_mmu_clear_dirty_pt_masked(kvm, memslot, offset, mask);
++}
++
++static void __pi_post_block(struct kvm_vcpu *vcpu)
++{
++	struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
++	struct pi_desc old, new;
++	unsigned int dest;
++
++	do {
++		old.control = new.control = pi_desc->control;
++		WARN(old.nv != POSTED_INTR_WAKEUP_VECTOR,
++		     "Wakeup handler not enabled while the VCPU is blocked\n");
++
++		dest = cpu_physical_id(vcpu->cpu);
++
++		if (x2apic_enabled())
++			new.ndst = dest;
++		else
++			new.ndst = (dest << 8) & 0xFF00;
++
++		/* set 'NV' to 'notification vector' */
++		new.nv = POSTED_INTR_VECTOR;
++	} while (cmpxchg64(&pi_desc->control, old.control,
++			   new.control) != old.control);
++
++	if (!WARN_ON_ONCE(vcpu->pre_pcpu == -1)) {
++		spin_lock(&per_cpu(blocked_vcpu_on_cpu_lock, vcpu->pre_pcpu));
++		list_del(&vcpu->blocked_vcpu_list);
++		spin_unlock(&per_cpu(blocked_vcpu_on_cpu_lock, vcpu->pre_pcpu));
++		vcpu->pre_pcpu = -1;
++	}
++}
++
++/*
++ * This routine does the following things for vCPU which is going
++ * to be blocked if VT-d PI is enabled.
++ * - Store the vCPU to the wakeup list, so when interrupts happen
++ *   we can find the right vCPU to wake up.
++ * - Change the Posted-interrupt descriptor as below:
++ *      'NDST' <-- vcpu->pre_pcpu
++ *      'NV' <-- POSTED_INTR_WAKEUP_VECTOR
++ * - If 'ON' is set during this process, which means at least one
++ *   interrupt is posted for this vCPU, we cannot block it, in
++ *   this case, return 1, otherwise, return 0.
++ *
++ */
++static int pi_pre_block(struct kvm_vcpu *vcpu)
++{
++	unsigned int dest;
++	struct pi_desc old, new;
++	struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu);
++
++	if (!kvm_arch_has_assigned_device(vcpu->kvm) ||
++		!irq_remapping_cap(IRQ_POSTING_CAP)  ||
++		!kvm_vcpu_apicv_active(vcpu))
++		return 0;
++
++	WARN_ON(irqs_disabled());
++	local_irq_disable();
++	if (!WARN_ON_ONCE(vcpu->pre_pcpu != -1)) {
++		vcpu->pre_pcpu = vcpu->cpu;
++		spin_lock(&per_cpu(blocked_vcpu_on_cpu_lock, vcpu->pre_pcpu));
++		list_add_tail(&vcpu->blocked_vcpu_list,
++			      &per_cpu(blocked_vcpu_on_cpu,
++				       vcpu->pre_pcpu));
++		spin_unlock(&per_cpu(blocked_vcpu_on_cpu_lock, vcpu->pre_pcpu));
++	}
++
++	do {
++		old.control = new.control = pi_desc->control;
++
++		WARN((pi_desc->sn == 1),
++		     "Warning: SN field of posted-interrupts "
++		     "is set before blocking\n");
++
++		/*
++		 * Since vCPU can be preempted during this process,
++		 * vcpu->cpu could be different with pre_pcpu, we
++		 * need to set pre_pcpu as the destination of wakeup
++		 * notification event, then we can find the right vCPU
++		 * to wakeup in wakeup handler if interrupts happen
++		 * when the vCPU is in blocked state.
++		 */
++		dest = cpu_physical_id(vcpu->pre_pcpu);
++
++		if (x2apic_enabled())
++			new.ndst = dest;
++		else
++			new.ndst = (dest << 8) & 0xFF00;
++
++		/* set 'NV' to 'wakeup vector' */
++		new.nv = POSTED_INTR_WAKEUP_VECTOR;
++	} while (cmpxchg64(&pi_desc->control, old.control,
++			   new.control) != old.control);
++
++	/* We should not block the vCPU if an interrupt is posted for it.  */
++	if (pi_test_on(pi_desc) == 1)
++		__pi_post_block(vcpu);
++
++	local_irq_enable();
++	return (vcpu->pre_pcpu == -1);
++}
++
++static int vmx_pre_block(struct kvm_vcpu *vcpu)
++{
++	if (pi_pre_block(vcpu))
++		return 1;
++
++	if (kvm_lapic_hv_timer_in_use(vcpu))
++		kvm_lapic_switch_to_sw_timer(vcpu);
++
++	return 0;
++}
++
++static void pi_post_block(struct kvm_vcpu *vcpu)
++{
++	if (vcpu->pre_pcpu == -1)
++		return;
++
++	WARN_ON(irqs_disabled());
++	local_irq_disable();
++	__pi_post_block(vcpu);
++	local_irq_enable();
++}
++
++static void vmx_post_block(struct kvm_vcpu *vcpu)
++{
++	if (kvm_x86_ops->set_hv_timer)
++		kvm_lapic_switch_to_hv_timer(vcpu);
++
++	pi_post_block(vcpu);
++}
++
++/*
++ * vmx_update_pi_irte - set IRTE for Posted-Interrupts
++ *
++ * @kvm: kvm
++ * @host_irq: host irq of the interrupt
++ * @guest_irq: gsi of the interrupt
++ * @set: set or unset PI
++ * returns 0 on success, < 0 on failure
++ */
++static int vmx_update_pi_irte(struct kvm *kvm, unsigned int host_irq,
++			      uint32_t guest_irq, bool set)
++{
++	struct kvm_kernel_irq_routing_entry *e;
++	struct kvm_irq_routing_table *irq_rt;
++	struct kvm_lapic_irq irq;
++	struct kvm_vcpu *vcpu;
++	struct vcpu_data vcpu_info;
++	int idx, ret = 0;
++
++	if (!kvm_arch_has_assigned_device(kvm) ||
++		!irq_remapping_cap(IRQ_POSTING_CAP) ||
++		!kvm_vcpu_apicv_active(kvm->vcpus[0]))
++		return 0;
++
++	idx = srcu_read_lock(&kvm->irq_srcu);
++	irq_rt = srcu_dereference(kvm->irq_routing, &kvm->irq_srcu);
++	if (guest_irq >= irq_rt->nr_rt_entries ||
++	    hlist_empty(&irq_rt->map[guest_irq])) {
++		pr_warn_once("no route for guest_irq %u/%u (broken user space?)\n",
++			     guest_irq, irq_rt->nr_rt_entries);
++		goto out;
++	}
++
++	hlist_for_each_entry(e, &irq_rt->map[guest_irq], link) {
++		if (e->type != KVM_IRQ_ROUTING_MSI)
++			continue;
++		/*
++		 * VT-d PI cannot support posting multicast/broadcast
++		 * interrupts to a vCPU, we still use interrupt remapping
++		 * for these kind of interrupts.
++		 *
++		 * For lowest-priority interrupts, we only support
++		 * those with single CPU as the destination, e.g. user
++		 * configures the interrupts via /proc/irq or uses
++		 * irqbalance to make the interrupts single-CPU.
++		 *
++		 * We will support full lowest-priority interrupt later.
++		 *
++		 * In addition, we can only inject generic interrupts using
++		 * the PI mechanism, refuse to route others through it.
++		 */
++
++		kvm_set_msi_irq(kvm, e, &irq);
++		if (!kvm_intr_is_single_vcpu(kvm, &irq, &vcpu) ||
++		    !kvm_irq_is_postable(&irq)) {
++			/*
++			 * Make sure the IRTE is in remapped mode if
++			 * we don't handle it in posted mode.
++			 */
++			ret = irq_set_vcpu_affinity(host_irq, NULL);
++			if (ret < 0) {
++				printk(KERN_INFO
++				   "failed to back to remapped mode, irq: %u\n",
++				   host_irq);
++				goto out;
++			}
++
++			continue;
++		}
++
++		vcpu_info.pi_desc_addr = __pa(vcpu_to_pi_desc(vcpu));
++		vcpu_info.vector = irq.vector;
++
++		trace_kvm_pi_irte_update(host_irq, vcpu->vcpu_id, e->gsi,
++				vcpu_info.vector, vcpu_info.pi_desc_addr, set);
++
++		if (set)
++			ret = irq_set_vcpu_affinity(host_irq, &vcpu_info);
++		else
++			ret = irq_set_vcpu_affinity(host_irq, NULL);
++
++		if (ret < 0) {
++			printk(KERN_INFO "%s: failed to update PI IRTE\n",
++					__func__);
++			goto out;
++		}
++	}
++
++	ret = 0;
++out:
++	srcu_read_unlock(&kvm->irq_srcu, idx);
++	return ret;
++}
++
++static void vmx_setup_mce(struct kvm_vcpu *vcpu)
++{
++	if (vcpu->arch.mcg_cap & MCG_LMCE_P)
++		to_vmx(vcpu)->msr_ia32_feature_control_valid_bits |=
++			FEATURE_CONTROL_LMCE;
++	else
++		to_vmx(vcpu)->msr_ia32_feature_control_valid_bits &=
++			~FEATURE_CONTROL_LMCE;
++}
++
++static int vmx_smi_allowed(struct kvm_vcpu *vcpu)
++{
++	/* we need a nested vmexit to enter SMM, postpone if run is pending */
++	if (to_vmx(vcpu)->nested.nested_run_pending)
++		return 0;
++	return 1;
++}
++
++static int vmx_pre_enter_smm(struct kvm_vcpu *vcpu, char *smstate)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++
++	vmx->nested.smm.guest_mode = is_guest_mode(vcpu);
++	if (vmx->nested.smm.guest_mode)
++		nested_vmx_vmexit(vcpu, -1, 0, 0);
++
++	vmx->nested.smm.vmxon = vmx->nested.vmxon;
++	vmx->nested.vmxon = false;
++	vmx_clear_hlt(vcpu);
++	return 0;
++}
++
++static int vmx_pre_leave_smm(struct kvm_vcpu *vcpu, const char *smstate)
++{
++	struct vcpu_vmx *vmx = to_vmx(vcpu);
++	int ret;
++
++	if (vmx->nested.smm.vmxon) {
++		vmx->nested.vmxon = true;
++		vmx->nested.smm.vmxon = false;
++	}
++
++	if (vmx->nested.smm.guest_mode) {
++		ret = nested_vmx_enter_non_root_mode(vcpu, false);
++		if (ret)
++			return ret;
++
++		vmx->nested.smm.guest_mode = false;
++	}
++	return 0;
++}
++
++static int enable_smi_window(struct kvm_vcpu *vcpu)
++{
++	return 0;
++}
++
++static bool vmx_need_emulation_on_page_fault(struct kvm_vcpu *vcpu)
++{
++	return false;
++}
++
++static bool vmx_apic_init_signal_blocked(struct kvm_vcpu *vcpu)
++{
++	return to_vmx(vcpu)->nested.vmxon;
++}
++
++static __init int hardware_setup(void)
++{
++	unsigned long host_bndcfgs;
++	struct desc_ptr dt;
++	int r, i;
++
++	rdmsrl_safe(MSR_EFER, &host_efer);
++
++	store_idt(&dt);
++	host_idt_base = dt.address;
++
++	for (i = 0; i < ARRAY_SIZE(vmx_msr_index); ++i)
++		kvm_define_shared_msr(i, vmx_msr_index[i]);
++
++	if (setup_vmcs_config(&vmcs_config, &vmx_capability) < 0)
++		return -EIO;
++
++	if (boot_cpu_has(X86_FEATURE_NX))
++		kvm_enable_efer_bits(EFER_NX);
++
++	if (boot_cpu_has(X86_FEATURE_MPX)) {
++		rdmsrl(MSR_IA32_BNDCFGS, host_bndcfgs);
++		WARN_ONCE(host_bndcfgs, "KVM: BNDCFGS in host will be lost");
++	}
++
++	if (!cpu_has_vmx_vpid() || !cpu_has_vmx_invvpid() ||
++	    !(cpu_has_vmx_invvpid_single() || cpu_has_vmx_invvpid_global()))
++		enable_vpid = 0;
++
++	if (!cpu_has_vmx_ept() ||
++	    !cpu_has_vmx_ept_4levels() ||
++	    !cpu_has_vmx_ept_mt_wb() ||
++	    !cpu_has_vmx_invept_global())
++		enable_ept = 0;
++
++	if (!cpu_has_vmx_ept_ad_bits() || !enable_ept)
++		enable_ept_ad_bits = 0;
++
++	if (!cpu_has_vmx_unrestricted_guest() || !enable_ept)
++		enable_unrestricted_guest = 0;
++
++	if (!cpu_has_vmx_flexpriority())
++		flexpriority_enabled = 0;
++
++	if (!cpu_has_virtual_nmis())
++		enable_vnmi = 0;
++
++	/*
++	 * set_apic_access_page_addr() is used to reload apic access
++	 * page upon invalidation.  No need to do anything if not
++	 * using the APIC_ACCESS_ADDR VMCS field.
++	 */
++	if (!flexpriority_enabled)
++		kvm_x86_ops->set_apic_access_page_addr = NULL;
++
++	if (!cpu_has_vmx_tpr_shadow())
++		kvm_x86_ops->update_cr8_intercept = NULL;
++
++	if (enable_ept && !cpu_has_vmx_ept_2m_page())
++		kvm_disable_largepages();
++
++#if IS_ENABLED(CONFIG_HYPERV)
++	if (ms_hyperv.nested_features & HV_X64_NESTED_GUEST_MAPPING_FLUSH
++	    && enable_ept) {
++		kvm_x86_ops->tlb_remote_flush = hv_remote_flush_tlb;
++		kvm_x86_ops->tlb_remote_flush_with_range =
++				hv_remote_flush_tlb_with_range;
++	}
++#endif
++
++	if (!cpu_has_vmx_ple()) {
++		ple_gap = 0;
++		ple_window = 0;
++		ple_window_grow = 0;
++		ple_window_max = 0;
++		ple_window_shrink = 0;
++	}
++
++	if (!cpu_has_vmx_apicv()) {
++		enable_apicv = 0;
++		kvm_x86_ops->sync_pir_to_irr = NULL;
++	}
++
++	if (cpu_has_vmx_tsc_scaling()) {
++		kvm_has_tsc_control = true;
++		kvm_max_tsc_scaling_ratio = KVM_VMX_TSC_MULTIPLIER_MAX;
++		kvm_tsc_scaling_ratio_frac_bits = 48;
++	}
++
++	set_bit(0, vmx_vpid_bitmap); /* 0 is reserved for host */
++
++	if (enable_ept)
++		vmx_enable_tdp();
++	else
++		kvm_disable_tdp();
++
++	/*
++	 * Only enable PML when hardware supports PML feature, and both EPT
++	 * and EPT A/D bit features are enabled -- PML depends on them to work.
++	 */
++	if (!enable_ept || !enable_ept_ad_bits || !cpu_has_vmx_pml())
++		enable_pml = 0;
++
++	if (!enable_pml) {
++		kvm_x86_ops->slot_enable_log_dirty = NULL;
++		kvm_x86_ops->slot_disable_log_dirty = NULL;
++		kvm_x86_ops->flush_log_dirty = NULL;
++		kvm_x86_ops->enable_log_dirty_pt_masked = NULL;
++	}
++
++	if (!cpu_has_vmx_preemption_timer())
++		enable_preemption_timer = false;
++
++	if (enable_preemption_timer) {
++		u64 use_timer_freq = 5000ULL * 1000 * 1000;
++		u64 vmx_msr;
++
++		rdmsrl(MSR_IA32_VMX_MISC, vmx_msr);
++		cpu_preemption_timer_multi =
++			vmx_msr & VMX_MISC_PREEMPTION_TIMER_RATE_MASK;
++
++		if (tsc_khz)
++			use_timer_freq = (u64)tsc_khz * 1000;
++		use_timer_freq >>= cpu_preemption_timer_multi;
++
++		/*
++		 * KVM "disables" the preemption timer by setting it to its max
++		 * value.  Don't use the timer if it might cause spurious exits
++		 * at a rate faster than 0.1 Hz (of uninterrupted guest time).
++		 */
++		if (use_timer_freq > 0xffffffffu / 10)
++			enable_preemption_timer = false;
++	}
++
++	if (!enable_preemption_timer) {
++		kvm_x86_ops->set_hv_timer = NULL;
++		kvm_x86_ops->cancel_hv_timer = NULL;
++		kvm_x86_ops->request_immediate_exit = __kvm_request_immediate_exit;
++	}
++
++	kvm_set_posted_intr_wakeup_handler(wakeup_handler);
++
++	kvm_mce_cap_supported |= MCG_LMCE_P;
++
++	if (pt_mode != PT_MODE_SYSTEM && pt_mode != PT_MODE_HOST_GUEST)
++		return -EINVAL;
++	if (!enable_ept || !cpu_has_vmx_intel_pt())
++		pt_mode = PT_MODE_SYSTEM;
++
++	if (nested) {
++		nested_vmx_setup_ctls_msrs(&vmcs_config.nested,
++					   vmx_capability.ept, enable_apicv);
++
++		r = nested_vmx_hardware_setup(kvm_vmx_exit_handlers);
++		if (r)
++			return r;
++	}
++
++	r = alloc_kvm_area();
++	if (r)
++		nested_vmx_hardware_unsetup();
++	return r;
++}
++
++static __exit void hardware_unsetup(void)
++{
++	if (nested)
++		nested_vmx_hardware_unsetup();
++
++	free_kvm_area();
++}
++
++static struct kvm_x86_ops vmx_x86_ops __ro_after_init = {
++	.cpu_has_kvm_support = cpu_has_kvm_support,
++	.disabled_by_bios = vmx_disabled_by_bios,
++	.hardware_setup = hardware_setup,
++	.hardware_unsetup = hardware_unsetup,
++	.check_processor_compatibility = vmx_check_processor_compat,
++	.hardware_enable = hardware_enable,
++	.hardware_disable = hardware_disable,
++	.cpu_has_accelerated_tpr = report_flexpriority,
++	.has_emulated_msr = vmx_has_emulated_msr,
++
++	.vm_init = vmx_vm_init,
++	.vm_alloc = vmx_vm_alloc,
++	.vm_free = vmx_vm_free,
++
++	.vcpu_create = vmx_create_vcpu,
++	.vcpu_free = vmx_free_vcpu,
++	.vcpu_reset = vmx_vcpu_reset,
++
++	.prepare_guest_switch = vmx_prepare_switch_to_guest,
++	.vcpu_load = vmx_vcpu_load,
++	.vcpu_put = vmx_vcpu_put,
++
++	.update_bp_intercept = update_exception_bitmap,
++	.get_msr_feature = vmx_get_msr_feature,
++	.get_msr = vmx_get_msr,
++	.set_msr = vmx_set_msr,
++	.get_segment_base = vmx_get_segment_base,
++	.get_segment = vmx_get_segment,
++	.set_segment = vmx_set_segment,
++	.get_cpl = vmx_get_cpl,
++	.get_cs_db_l_bits = vmx_get_cs_db_l_bits,
++	.decache_cr0_guest_bits = vmx_decache_cr0_guest_bits,
++	.decache_cr4_guest_bits = vmx_decache_cr4_guest_bits,
++	.set_cr0 = vmx_set_cr0,
++	.set_cr3 = vmx_set_cr3,
++	.set_cr4 = vmx_set_cr4,
++	.set_efer = vmx_set_efer,
++	.get_idt = vmx_get_idt,
++	.set_idt = vmx_set_idt,
++	.get_gdt = vmx_get_gdt,
++	.set_gdt = vmx_set_gdt,
++	.get_dr6 = vmx_get_dr6,
++	.set_dr6 = vmx_set_dr6,
++	.set_dr7 = vmx_set_dr7,
++	.sync_dirty_debug_regs = vmx_sync_dirty_debug_regs,
++	.cache_reg = vmx_cache_reg,
++	.get_rflags = vmx_get_rflags,
++	.set_rflags = vmx_set_rflags,
++
++	.tlb_flush = vmx_flush_tlb,
++	.tlb_flush_gva = vmx_flush_tlb_gva,
++
++	.run = vmx_vcpu_run,
++	.handle_exit = vmx_handle_exit,
++	.skip_emulated_instruction = skip_emulated_instruction,
++	.set_interrupt_shadow = vmx_set_interrupt_shadow,
++	.get_interrupt_shadow = vmx_get_interrupt_shadow,
++	.patch_hypercall = vmx_patch_hypercall,
++	.set_irq = vmx_inject_irq,
++	.set_nmi = vmx_inject_nmi,
++	.queue_exception = vmx_queue_exception,
++	.cancel_injection = vmx_cancel_injection,
++	.interrupt_allowed = vmx_interrupt_allowed,
++	.nmi_allowed = vmx_nmi_allowed,
++	.get_nmi_mask = vmx_get_nmi_mask,
++	.set_nmi_mask = vmx_set_nmi_mask,
++	.enable_nmi_window = enable_nmi_window,
++	.enable_irq_window = enable_irq_window,
++	.update_cr8_intercept = update_cr8_intercept,
++	.set_virtual_apic_mode = vmx_set_virtual_apic_mode,
++	.set_apic_access_page_addr = vmx_set_apic_access_page_addr,
++	.get_enable_apicv = vmx_get_enable_apicv,
++	.refresh_apicv_exec_ctrl = vmx_refresh_apicv_exec_ctrl,
++	.load_eoi_exitmap = vmx_load_eoi_exitmap,
++	.apicv_post_state_restore = vmx_apicv_post_state_restore,
++	.hwapic_irr_update = vmx_hwapic_irr_update,
++	.hwapic_isr_update = vmx_hwapic_isr_update,
++	.guest_apic_has_interrupt = vmx_guest_apic_has_interrupt,
++	.sync_pir_to_irr = vmx_sync_pir_to_irr,
++	.deliver_posted_interrupt = vmx_deliver_posted_interrupt,
++	.dy_apicv_has_pending_interrupt = vmx_dy_apicv_has_pending_interrupt,
++
++	.set_tss_addr = vmx_set_tss_addr,
++	.set_identity_map_addr = vmx_set_identity_map_addr,
++	.get_tdp_level = get_ept_level,
++	.get_mt_mask = vmx_get_mt_mask,
++
++	.get_exit_info = vmx_get_exit_info,
++
++	.get_lpage_level = vmx_get_lpage_level,
++
++	.cpuid_update = vmx_cpuid_update,
++
++	.rdtscp_supported = vmx_rdtscp_supported,
++	.invpcid_supported = vmx_invpcid_supported,
++
++	.set_supported_cpuid = vmx_set_supported_cpuid,
++
++	.has_wbinvd_exit = cpu_has_vmx_wbinvd_exit,
++
++	.read_l1_tsc_offset = vmx_read_l1_tsc_offset,
++	.write_l1_tsc_offset = vmx_write_l1_tsc_offset,
++
++	.set_tdp_cr3 = vmx_set_cr3,
++
++	.check_intercept = vmx_check_intercept,
++	.handle_exit_irqoff = vmx_handle_exit_irqoff,
++	.mpx_supported = vmx_mpx_supported,
++	.xsaves_supported = vmx_xsaves_supported,
++	.umip_emulated = vmx_umip_emulated,
++	.pt_supported = vmx_pt_supported,
++
++	.request_immediate_exit = vmx_request_immediate_exit,
++
++	.sched_in = vmx_sched_in,
++
++	.slot_enable_log_dirty = vmx_slot_enable_log_dirty,
++	.slot_disable_log_dirty = vmx_slot_disable_log_dirty,
++	.flush_log_dirty = vmx_flush_log_dirty,
++	.enable_log_dirty_pt_masked = vmx_enable_log_dirty_pt_masked,
++	.write_log_dirty = vmx_write_pml_buffer,
++
++	.pre_block = vmx_pre_block,
++	.post_block = vmx_post_block,
++
++	.pmu_ops = &intel_pmu_ops,
++
++	.update_pi_irte = vmx_update_pi_irte,
++
++#ifdef CONFIG_X86_64
++	.set_hv_timer = vmx_set_hv_timer,
++	.cancel_hv_timer = vmx_cancel_hv_timer,
++#endif
++
++	.setup_mce = vmx_setup_mce,
++
++	.smi_allowed = vmx_smi_allowed,
++	.pre_enter_smm = vmx_pre_enter_smm,
++	.pre_leave_smm = vmx_pre_leave_smm,
++	.enable_smi_window = enable_smi_window,
++
++	.check_nested_events = NULL,
++	.get_nested_state = NULL,
++	.set_nested_state = NULL,
++	.get_vmcs12_pages = NULL,
++	.nested_enable_evmcs = NULL,
++	.nested_get_evmcs_version = NULL,
++	.need_emulation_on_page_fault = vmx_need_emulation_on_page_fault,
++	.apic_init_signal_blocked = vmx_apic_init_signal_blocked,
++};
++
++static void vmx_cleanup_l1d_flush(void)
++{
++	if (vmx_l1d_flush_pages) {
++		free_pages((unsigned long)vmx_l1d_flush_pages, L1D_CACHE_ORDER);
++		vmx_l1d_flush_pages = NULL;
++	}
++	/* Restore state so sysfs ignores VMX */
++	l1tf_vmx_mitigation = VMENTER_L1D_FLUSH_AUTO;
++}
++
++static void vmx_exit(void)
++{
++#ifdef CONFIG_KEXEC_CORE
++	RCU_INIT_POINTER(crash_vmclear_loaded_vmcss, NULL);
++	synchronize_rcu();
++#endif
++
++	kvm_exit();
++
++#if IS_ENABLED(CONFIG_HYPERV)
++	if (static_branch_unlikely(&enable_evmcs)) {
++		int cpu;
++		struct hv_vp_assist_page *vp_ap;
++		/*
++		 * Reset everything to support using non-enlightened VMCS
++		 * access later (e.g. when we reload the module with
++		 * enlightened_vmcs=0)
++		 */
++		for_each_online_cpu(cpu) {
++			vp_ap =	hv_get_vp_assist_page(cpu);
++
++			if (!vp_ap)
++				continue;
++
++			vp_ap->nested_control.features.directhypercall = 0;
++			vp_ap->current_nested_vmcs = 0;
++			vp_ap->enlighten_vmentry = 0;
++		}
++
++		static_branch_disable(&enable_evmcs);
++	}
++#endif
++	vmx_cleanup_l1d_flush();
++}
++module_exit(vmx_exit);
++
++static int __init vmx_init(void)
++{
++	int r;
++
++#if IS_ENABLED(CONFIG_HYPERV)
++	/*
++	 * Enlightened VMCS usage should be recommended and the host needs
++	 * to support eVMCS v1 or above. We can also disable eVMCS support
++	 * with module parameter.
++	 */
++	if (enlightened_vmcs &&
++	    ms_hyperv.hints & HV_X64_ENLIGHTENED_VMCS_RECOMMENDED &&
++	    (ms_hyperv.nested_features & HV_X64_ENLIGHTENED_VMCS_VERSION) >=
++	    KVM_EVMCS_VERSION) {
++		int cpu;
++
++		/* Check that we have assist pages on all online CPUs */
++		for_each_online_cpu(cpu) {
++			if (!hv_get_vp_assist_page(cpu)) {
++				enlightened_vmcs = false;
++				break;
++			}
++		}
++
++		if (enlightened_vmcs) {
++			pr_info("KVM: vmx: using Hyper-V Enlightened VMCS\n");
++			static_branch_enable(&enable_evmcs);
++		}
++
++		if (ms_hyperv.nested_features & HV_X64_NESTED_DIRECT_FLUSH)
++			vmx_x86_ops.enable_direct_tlbflush
++				= hv_enable_direct_tlbflush;
++
++	} else {
++		enlightened_vmcs = false;
++	}
++#endif
++
++	r = kvm_init(&vmx_x86_ops, sizeof(struct vcpu_vmx),
++		     __alignof__(struct vcpu_vmx), THIS_MODULE);
++	if (r)
++		return r;
++
++	/*
++	 * Must be called after kvm_init() so enable_ept is properly set
++	 * up. Hand the parameter mitigation value in which was stored in
++	 * the pre module init parser. If no parameter was given, it will
++	 * contain 'auto' which will be turned into the default 'cond'
++	 * mitigation mode.
++	 */
++	r = vmx_setup_l1d_flush(vmentry_l1d_flush_param);
++	if (r) {
++		vmx_exit();
++		return r;
++	}
++
++#ifdef CONFIG_KEXEC_CORE
++	rcu_assign_pointer(crash_vmclear_loaded_vmcss,
++			   crash_vmclear_local_loaded_vmcss);
++#endif
++	vmx_check_vmcs12_offsets();
++
++	return 0;
++}
++module_init(vmx_init);
+diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
+index df7ccee4e3fd..21fb707546b6 100644
+--- a/arch/x86/kvm/x86.c
++++ b/arch/x86/kvm/x86.c
+@@ -53,6 +53,7 @@
+ #include <linux/pvclock_gtod.h>
+ #include <linux/kvm_irqfd.h>
+ #include <linux/irqbypass.h>
++#include <linux/nospec.h>
+ #include <trace/events/kvm.h>
+ 
+ #define CREATE_TRACE_POINTS
+@@ -873,9 +874,11 @@ static u64 kvm_dr6_fixed(struct kvm_vcpu *vcpu)
+ 
+ static int __kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val)
+ {
++	size_t size = ARRAY_SIZE(vcpu->arch.db);
++
+ 	switch (dr) {
+ 	case 0 ... 3:
+-		vcpu->arch.db[dr] = val;
++		vcpu->arch.db[array_index_nospec(dr, size)] = val;
+ 		if (!(vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP))
+ 			vcpu->arch.eff_db[dr] = val;
+ 		break;
+@@ -912,9 +915,11 @@ EXPORT_SYMBOL_GPL(kvm_set_dr);
+ 
+ int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val)
+ {
++	size_t size = ARRAY_SIZE(vcpu->arch.db);
++
+ 	switch (dr) {
+ 	case 0 ... 3:
+-		*val = vcpu->arch.db[dr];
++		*val = vcpu->arch.db[array_index_nospec(dr, size)];
+ 		break;
+ 	case 4:
+ 		/* fall through */
+@@ -1989,7 +1994,10 @@ static int set_msr_mce(struct kvm_vcpu *vcpu, u32 msr, u64 data)
+ 	default:
+ 		if (msr >= MSR_IA32_MC0_CTL &&
+ 		    msr < MSR_IA32_MCx_CTL(bank_num)) {
+-			u32 offset = msr - MSR_IA32_MC0_CTL;
++			u32 offset = array_index_nospec(
++				msr - MSR_IA32_MC0_CTL,
++				MSR_IA32_MCx_CTL(bank_num) - MSR_IA32_MC0_CTL);
++
+ 			/* only 0 or all 1s can be written to IA32_MCi_CTL
+ 			 * some Linux kernels though clear bit 10 in bank 4 to
+ 			 * workaround a BIOS/GART TBL issue on AMD K8s, ignore
+@@ -2350,7 +2358,10 @@ static int get_msr_mce(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
+ 	default:
+ 		if (msr >= MSR_IA32_MC0_CTL &&
+ 		    msr < MSR_IA32_MCx_CTL(bank_num)) {
+-			u32 offset = msr - MSR_IA32_MC0_CTL;
++			u32 offset = array_index_nospec(
++				msr - MSR_IA32_MC0_CTL,
++				MSR_IA32_MCx_CTL(bank_num) - MSR_IA32_MC0_CTL);
++
+ 			data = vcpu->arch.mce_banks[offset];
+ 			break;
+ 		}
+@@ -5874,14 +5885,12 @@ static void kvm_set_mmio_spte_mask(void)
+ 	/* Set the present bit. */
+ 	mask |= 1ull;
+ 
+-#ifdef CONFIG_X86_64
+ 	/*
+ 	 * If reserved bit is not supported, clear the present bit to disable
+ 	 * mmio page fault.
+ 	 */
+ 	if (maxphyaddr == 52)
+ 		mask &= ~1ull;
+-#endif
+ 
+ 	kvm_mmu_set_mmio_spte_mask(mask);
+ }
+@@ -7487,7 +7496,7 @@ void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
+ 	kvm_mmu_unload(vcpu);
+ 	vcpu_put(vcpu);
+ 
+-	kvm_x86_ops->vcpu_free(vcpu);
++	kvm_arch_vcpu_free(vcpu);
+ }
+ 
+ void kvm_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event)
+diff --git a/crypto/algapi.c b/crypto/algapi.c
+index eb58b73ca925..9d26d0125cd2 100644
+--- a/crypto/algapi.c
++++ b/crypto/algapi.c
+@@ -653,11 +653,9 @@ EXPORT_SYMBOL_GPL(crypto_grab_spawn);
+ 
+ void crypto_drop_spawn(struct crypto_spawn *spawn)
+ {
+-	if (!spawn->alg)
+-		return;
+-
+ 	down_write(&crypto_alg_sem);
+-	list_del(&spawn->list);
++	if (spawn->alg)
++		list_del(&spawn->list);
+ 	up_write(&crypto_alg_sem);
+ }
+ EXPORT_SYMBOL_GPL(crypto_drop_spawn);
+@@ -665,22 +663,16 @@ EXPORT_SYMBOL_GPL(crypto_drop_spawn);
+ static struct crypto_alg *crypto_spawn_alg(struct crypto_spawn *spawn)
+ {
+ 	struct crypto_alg *alg;
+-	struct crypto_alg *alg2;
+ 
+ 	down_read(&crypto_alg_sem);
+ 	alg = spawn->alg;
+-	alg2 = alg;
+-	if (alg2)
+-		alg2 = crypto_mod_get(alg2);
+-	up_read(&crypto_alg_sem);
+-
+-	if (!alg2) {
+-		if (alg)
+-			crypto_shoot_alg(alg);
+-		return ERR_PTR(-EAGAIN);
++	if (alg && !crypto_mod_get(alg)) {
++		alg->cra_flags |= CRYPTO_ALG_DYING;
++		alg = NULL;
+ 	}
++	up_read(&crypto_alg_sem);
+ 
+-	return alg;
++	return alg ?: ERR_PTR(-EAGAIN);
+ }
+ 
+ struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type,
+diff --git a/crypto/api.c b/crypto/api.c
+index bbc147cb5dec..e108f9d466b0 100644
+--- a/crypto/api.c
++++ b/crypto/api.c
+@@ -355,13 +355,12 @@ static unsigned int crypto_ctxsize(struct crypto_alg *alg, u32 type, u32 mask)
+ 	return len;
+ }
+ 
+-void crypto_shoot_alg(struct crypto_alg *alg)
++static void crypto_shoot_alg(struct crypto_alg *alg)
+ {
+ 	down_write(&crypto_alg_sem);
+ 	alg->cra_flags |= CRYPTO_ALG_DYING;
+ 	up_write(&crypto_alg_sem);
+ }
+-EXPORT_SYMBOL_GPL(crypto_shoot_alg);
+ 
+ struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
+ 				      u32 mask)
+diff --git a/crypto/internal.h b/crypto/internal.h
+index 00e42a3ed814..657578d0ad45 100644
+--- a/crypto/internal.h
++++ b/crypto/internal.h
+@@ -87,7 +87,6 @@ void crypto_alg_tested(const char *name, int err);
+ void crypto_remove_spawns(struct crypto_alg *alg, struct list_head *list,
+ 			  struct crypto_alg *nalg);
+ void crypto_remove_final(struct list_head *list);
+-void crypto_shoot_alg(struct crypto_alg *alg);
+ struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type,
+ 				      u32 mask);
+ void *crypto_create_tfm(struct crypto_alg *alg,
+diff --git a/crypto/pcrypt.c b/crypto/pcrypt.c
+index 1348541da463..85082574c515 100644
+--- a/crypto/pcrypt.c
++++ b/crypto/pcrypt.c
+@@ -130,7 +130,6 @@ static void pcrypt_aead_done(struct crypto_async_request *areq, int err)
+ 	struct padata_priv *padata = pcrypt_request_padata(preq);
+ 
+ 	padata->info = err;
+-	req->base.flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP;
+ 
+ 	padata_do_serial(padata);
+ }
+diff --git a/drivers/crypto/picoxcell_crypto.c b/drivers/crypto/picoxcell_crypto.c
+index 615da961c4d8..02f61409770e 100644
+--- a/drivers/crypto/picoxcell_crypto.c
++++ b/drivers/crypto/picoxcell_crypto.c
+@@ -1610,6 +1610,11 @@ static bool spacc_is_compatible(struct platform_device *pdev,
+ 	return false;
+ }
+ 
++static void spacc_tasklet_kill(void *data)
++{
++	tasklet_kill(data);
++}
++
+ static int spacc_probe(struct platform_device *pdev)
+ {
+ 	int i, err, ret = -EINVAL;
+@@ -1652,6 +1657,14 @@ static int spacc_probe(struct platform_device *pdev)
+ 		return -ENXIO;
+ 	}
+ 
++	tasklet_init(&engine->complete, spacc_spacc_complete,
++		     (unsigned long)engine);
++
++	ret = devm_add_action(&pdev->dev, spacc_tasklet_kill,
++			      &engine->complete);
++	if (ret)
++		return ret;
++
+ 	if (devm_request_irq(&pdev->dev, irq->start, spacc_spacc_irq, 0,
+ 			     engine->name, engine)) {
+ 		dev_err(engine->dev, "failed to request IRQ\n");
+@@ -1714,8 +1727,6 @@ static int spacc_probe(struct platform_device *pdev)
+ 	INIT_LIST_HEAD(&engine->completed);
+ 	INIT_LIST_HEAD(&engine->in_progress);
+ 	engine->in_flight = 0;
+-	tasklet_init(&engine->complete, spacc_spacc_complete,
+-		     (unsigned long)engine);
+ 
+ 	platform_set_drvdata(pdev, engine);
+ 
+diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
+index 9f6e234e7029..eae9370225df 100644
+--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
++++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
+@@ -63,7 +63,11 @@ static void atmel_hlcdc_crtc_mode_set_nofb(struct drm_crtc *c)
+ 	struct videomode vm;
+ 	unsigned long prate;
+ 	unsigned int cfg;
+-	int div;
++	int div, ret;
++
++	ret = clk_prepare_enable(crtc->dc->hlcdc->sys_clk);
++	if (ret)
++		return;
+ 
+ 	vm.vfront_porch = adj->crtc_vsync_start - adj->crtc_vdisplay;
+ 	vm.vback_porch = adj->crtc_vtotal - adj->crtc_vsync_end;
+@@ -119,6 +123,8 @@ static void atmel_hlcdc_crtc_mode_set_nofb(struct drm_crtc *c)
+ 			   ATMEL_HLCDC_VSPSU | ATMEL_HLCDC_VSPHO |
+ 			   ATMEL_HLCDC_GUARDTIME_MASK,
+ 			   cfg);
++
++	clk_disable_unprepare(crtc->dc->hlcdc->sys_clk);
+ }
+ 
+ static bool atmel_hlcdc_crtc_mode_fixup(struct drm_crtc *crtc,
+diff --git a/drivers/md/dm.c b/drivers/md/dm.c
+index c752c55f0bb2..c4d4cd38a58f 100644
+--- a/drivers/md/dm.c
++++ b/drivers/md/dm.c
+@@ -2293,7 +2293,6 @@ static void dm_init_md_queue(struct mapped_device *md)
+ 	 * - must do so here (in alloc_dev callchain) before queue is used
+ 	 */
+ 	md->queue->queuedata = md;
+-	md->queue->backing_dev_info.congested_data = md;
+ }
+ 
+ static void dm_init_old_md_queue(struct mapped_device *md)
+@@ -2304,6 +2303,7 @@ static void dm_init_old_md_queue(struct mapped_device *md)
+ 	/*
+ 	 * Initialize aspects of queue that aren't relevant for blk-mq
+ 	 */
++	md->queue->backing_dev_info.congested_data = md;
+ 	md->queue->backing_dev_info.congested_fn = dm_any_congested;
+ 	blk_queue_bounce_limit(md->queue, BLK_BOUNCE_ANY);
+ }
+@@ -2386,6 +2386,12 @@ static struct mapped_device *alloc_dev(int minor)
+ 		goto bad;
+ 
+ 	dm_init_md_queue(md);
++	/*
++	 * default to bio-based required ->make_request_fn until DM
++	 * table is loaded and md->type established. If request-based
++	 * table is loaded: blk-mq will override accordingly.
++	 */
++	blk_queue_make_request(md->queue, dm_make_request);
+ 
+ 	md->disk = alloc_disk(1);
+ 	if (!md->disk)
+@@ -2849,7 +2855,6 @@ int dm_setup_md_queue(struct mapped_device *md)
+ 		break;
+ 	case DM_TYPE_BIO_BASED:
+ 		dm_init_old_md_queue(md);
+-		blk_queue_make_request(md->queue, dm_make_request);
+ 		/*
+ 		 * DM handles splitting bios as needed.  Free the bio_split bioset
+ 		 * since it won't be used (saves 1 process per bio-based DM device).
+diff --git a/drivers/md/persistent-data/dm-space-map-common.c b/drivers/md/persistent-data/dm-space-map-common.c
+index 306d2e4502c4..22729fd92a1b 100644
+--- a/drivers/md/persistent-data/dm-space-map-common.c
++++ b/drivers/md/persistent-data/dm-space-map-common.c
+@@ -382,6 +382,33 @@ int sm_ll_find_free_block(struct ll_disk *ll, dm_block_t begin,
+ 	return -ENOSPC;
+ }
+ 
++int sm_ll_find_common_free_block(struct ll_disk *old_ll, struct ll_disk *new_ll,
++	                         dm_block_t begin, dm_block_t end, dm_block_t *b)
++{
++	int r;
++	uint32_t count;
++
++	do {
++		r = sm_ll_find_free_block(new_ll, begin, new_ll->nr_blocks, b);
++		if (r)
++			break;
++
++		/* double check this block wasn't used in the old transaction */
++		if (*b >= old_ll->nr_blocks)
++			count = 0;
++		else {
++			r = sm_ll_lookup(old_ll, *b, &count);
++			if (r)
++				break;
++
++			if (count)
++				begin = *b + 1;
++		}
++	} while (count);
++
++	return r;
++}
++
+ static int sm_ll_mutate(struct ll_disk *ll, dm_block_t b,
+ 			int (*mutator)(void *context, uint32_t old, uint32_t *new),
+ 			void *context, enum allocation_event *ev)
+diff --git a/drivers/md/persistent-data/dm-space-map-common.h b/drivers/md/persistent-data/dm-space-map-common.h
+index b3078d5eda0c..8de63ce39bdd 100644
+--- a/drivers/md/persistent-data/dm-space-map-common.h
++++ b/drivers/md/persistent-data/dm-space-map-common.h
+@@ -109,6 +109,8 @@ int sm_ll_lookup_bitmap(struct ll_disk *ll, dm_block_t b, uint32_t *result);
+ int sm_ll_lookup(struct ll_disk *ll, dm_block_t b, uint32_t *result);
+ int sm_ll_find_free_block(struct ll_disk *ll, dm_block_t begin,
+ 			  dm_block_t end, dm_block_t *result);
++int sm_ll_find_common_free_block(struct ll_disk *old_ll, struct ll_disk *new_ll,
++	                         dm_block_t begin, dm_block_t end, dm_block_t *result);
+ int sm_ll_insert(struct ll_disk *ll, dm_block_t b, uint32_t ref_count, enum allocation_event *ev);
+ int sm_ll_inc(struct ll_disk *ll, dm_block_t b, enum allocation_event *ev);
+ int sm_ll_dec(struct ll_disk *ll, dm_block_t b, enum allocation_event *ev);
+diff --git a/drivers/md/persistent-data/dm-space-map-disk.c b/drivers/md/persistent-data/dm-space-map-disk.c
+index 32adf6b4a9c7..bf4c5e2ccb6f 100644
+--- a/drivers/md/persistent-data/dm-space-map-disk.c
++++ b/drivers/md/persistent-data/dm-space-map-disk.c
+@@ -167,8 +167,10 @@ static int sm_disk_new_block(struct dm_space_map *sm, dm_block_t *b)
+ 	enum allocation_event ev;
+ 	struct sm_disk *smd = container_of(sm, struct sm_disk, sm);
+ 
+-	/* FIXME: we should loop round a couple of times */
+-	r = sm_ll_find_free_block(&smd->old_ll, smd->begin, smd->old_ll.nr_blocks, b);
++	/*
++	 * Any block we allocate has to be free in both the old and current ll.
++	 */
++	r = sm_ll_find_common_free_block(&smd->old_ll, &smd->ll, smd->begin, smd->ll.nr_blocks, b);
+ 	if (r)
+ 		return r;
+ 
+diff --git a/drivers/md/persistent-data/dm-space-map-metadata.c b/drivers/md/persistent-data/dm-space-map-metadata.c
+index 1d29771af380..967d8f2a731f 100644
+--- a/drivers/md/persistent-data/dm-space-map-metadata.c
++++ b/drivers/md/persistent-data/dm-space-map-metadata.c
+@@ -447,7 +447,10 @@ static int sm_metadata_new_block_(struct dm_space_map *sm, dm_block_t *b)
+ 	enum allocation_event ev;
+ 	struct sm_metadata *smm = container_of(sm, struct sm_metadata, sm);
+ 
+-	r = sm_ll_find_free_block(&smm->old_ll, smm->begin, smm->old_ll.nr_blocks, b);
++	/*
++	 * Any block we allocate has to be free in both the old and current ll.
++	 */
++	r = sm_ll_find_common_free_block(&smm->old_ll, &smm->ll, smm->begin, smm->ll.nr_blocks, b);
+ 	if (r)
+ 		return r;
+ 
+diff --git a/drivers/media/rc/iguanair.c b/drivers/media/rc/iguanair.c
+index cda4ce612dcf..782391507e3a 100644
+--- a/drivers/media/rc/iguanair.c
++++ b/drivers/media/rc/iguanair.c
+@@ -430,7 +430,7 @@ static int iguanair_probe(struct usb_interface *intf,
+ 	int ret, pipein, pipeout;
+ 	struct usb_host_interface *idesc;
+ 
+-	idesc = intf->altsetting;
++	idesc = intf->cur_altsetting;
+ 	if (idesc->desc.bNumEndpoints < 2)
+ 		return -ENODEV;
+ 
+diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
+index ebd1b882556d..9cd0268b2767 100644
+--- a/drivers/media/usb/uvc/uvc_driver.c
++++ b/drivers/media/usb/uvc/uvc_driver.c
+@@ -1411,6 +1411,11 @@ static int uvc_scan_chain_forward(struct uvc_video_chain *chain,
+ 			break;
+ 		if (forward == prev)
+ 			continue;
++		if (forward->chain.next || forward->chain.prev) {
++			uvc_trace(UVC_TRACE_DESCR, "Found reference to "
++				"entity %d already in chain.\n", forward->id);
++			return -EINVAL;
++		}
+ 
+ 		switch (UVC_ENTITY_TYPE(forward)) {
+ 		case UVC_VC_EXTENSION_UNIT:
+@@ -1492,6 +1497,13 @@ static int uvc_scan_chain_backward(struct uvc_video_chain *chain,
+ 				return -1;
+ 			}
+ 
++			if (term->chain.next || term->chain.prev) {
++				uvc_trace(UVC_TRACE_DESCR, "Found reference to "
++					"entity %d already in chain.\n",
++					term->id);
++				return -EINVAL;
++			}
++
+ 			if (uvc_trace_param & UVC_TRACE_PROBE)
+ 				printk(" %d", term->id);
+ 
+diff --git a/drivers/mfd/da9062-core.c b/drivers/mfd/da9062-core.c
+index a9ad024ec6b0..16c6f07e045d 100644
+--- a/drivers/mfd/da9062-core.c
++++ b/drivers/mfd/da9062-core.c
+@@ -142,7 +142,7 @@ static const struct mfd_cell da9062_devs[] = {
+ 		.name		= "da9062-watchdog",
+ 		.num_resources	= ARRAY_SIZE(da9062_wdt_resources),
+ 		.resources	= da9062_wdt_resources,
+-		.of_compatible  = "dlg,da9062-wdt",
++		.of_compatible  = "dlg,da9062-watchdog",
+ 	},
+ 	{
+ 		.name		= "da9062-thermal",
+diff --git a/drivers/mfd/dln2.c b/drivers/mfd/dln2.c
+index 704e189ca162..95d0f2df0ad4 100644
+--- a/drivers/mfd/dln2.c
++++ b/drivers/mfd/dln2.c
+@@ -729,6 +729,8 @@ static int dln2_probe(struct usb_interface *interface,
+ 		      const struct usb_device_id *usb_id)
+ {
+ 	struct usb_host_interface *hostif = interface->cur_altsetting;
++	struct usb_endpoint_descriptor *epin;
++	struct usb_endpoint_descriptor *epout;
+ 	struct device *dev = &interface->dev;
+ 	struct dln2_dev *dln2;
+ 	int ret;
+@@ -738,12 +740,19 @@ static int dln2_probe(struct usb_interface *interface,
+ 	    hostif->desc.bNumEndpoints < 2)
+ 		return -ENODEV;
+ 
++	epin = &hostif->endpoint[0].desc;
++	epout = &hostif->endpoint[1].desc;
++	if (!usb_endpoint_is_bulk_out(epout))
++		return -ENODEV;
++	if (!usb_endpoint_is_bulk_in(epin))
++		return -ENODEV;
++
+ 	dln2 = kzalloc(sizeof(*dln2), GFP_KERNEL);
+ 	if (!dln2)
+ 		return -ENOMEM;
+ 
+-	dln2->ep_out = hostif->endpoint[0].desc.bEndpointAddress;
+-	dln2->ep_in = hostif->endpoint[1].desc.bEndpointAddress;
++	dln2->ep_out = epout->bEndpointAddress;
++	dln2->ep_in = epin->bEndpointAddress;
+ 	dln2->usb_dev = usb_get_dev(interface_to_usbdev(interface));
+ 	dln2->interface = interface;
+ 	usb_set_intfdata(interface, dln2);
+diff --git a/drivers/mfd/rn5t618.c b/drivers/mfd/rn5t618.c
+index 666857192dbe..b6db5e5cc3a6 100644
+--- a/drivers/mfd/rn5t618.c
++++ b/drivers/mfd/rn5t618.c
+@@ -28,6 +28,7 @@ static bool rn5t618_volatile_reg(struct device *dev, unsigned int reg)
+ 	case RN5T618_WATCHDOGCNT:
+ 	case RN5T618_DCIRQ:
+ 	case RN5T618_ILIMDATAH ... RN5T618_AIN0DATAL:
++	case RN5T618_ADCCNT3:
+ 	case RN5T618_IR_ADC1 ... RN5T618_IR_ADC3:
+ 	case RN5T618_IR_GPR:
+ 	case RN5T618_IR_GPF:
+diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c
+index 40a369c7005a..b52489a67097 100644
+--- a/drivers/mmc/host/mmc_spi.c
++++ b/drivers/mmc/host/mmc_spi.c
+@@ -1153,17 +1153,22 @@ static void mmc_spi_initsequence(struct mmc_spi_host *host)
+ 	 * SPI protocol.  Another is that when chipselect is released while
+ 	 * the card returns BUSY status, the clock must issue several cycles
+ 	 * with chipselect high before the card will stop driving its output.
++	 *
++	 * SPI_CS_HIGH means "asserted" here. In some cases like when using
++	 * GPIOs for chip select, SPI_CS_HIGH is set but this will be logically
++	 * inverted by gpiolib, so if we want to ascertain to drive it high
++	 * we should toggle the default with an XOR as we do here.
+ 	 */
+-	host->spi->mode |= SPI_CS_HIGH;
++	host->spi->mode ^= SPI_CS_HIGH;
+ 	if (spi_setup(host->spi) != 0) {
+ 		/* Just warn; most cards work without it. */
+ 		dev_warn(&host->spi->dev,
+ 				"can't change chip-select polarity\n");
+-		host->spi->mode &= ~SPI_CS_HIGH;
++		host->spi->mode ^= SPI_CS_HIGH;
+ 	} else {
+ 		mmc_spi_readbytes(host, 18);
+ 
+-		host->spi->mode &= ~SPI_CS_HIGH;
++		host->spi->mode ^= SPI_CS_HIGH;
+ 		if (spi_setup(host->spi) != 0) {
+ 			/* Wot, we can't get the same setup we had before? */
+ 			dev_err(&host->spi->dev,
+diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
+index 82d23bd3a742..0615522933dc 100644
+--- a/drivers/net/bonding/bond_alb.c
++++ b/drivers/net/bonding/bond_alb.c
+@@ -1371,26 +1371,31 @@ int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev)
+ 	bool do_tx_balance = true;
+ 	u32 hash_index = 0;
+ 	const u8 *hash_start = NULL;
+-	struct ipv6hdr *ip6hdr;
+ 
+ 	skb_reset_mac_header(skb);
+ 	eth_data = eth_hdr(skb);
+ 
+ 	switch (ntohs(skb->protocol)) {
+ 	case ETH_P_IP: {
+-		const struct iphdr *iph = ip_hdr(skb);
++		const struct iphdr *iph;
+ 
+ 		if (ether_addr_equal_64bits(eth_data->h_dest, mac_bcast) ||
+-		    (iph->daddr == ip_bcast) ||
+-		    (iph->protocol == IPPROTO_IGMP)) {
++		    (!pskb_network_may_pull(skb, sizeof(*iph)))) {
++			do_tx_balance = false;
++			break;
++		}
++		iph = ip_hdr(skb);
++		if (iph->daddr == ip_bcast || iph->protocol == IPPROTO_IGMP) {
+ 			do_tx_balance = false;
+ 			break;
+ 		}
+ 		hash_start = (char *)&(iph->daddr);
+ 		hash_size = sizeof(iph->daddr);
+-	}
+ 		break;
+-	case ETH_P_IPV6:
++	}
++	case ETH_P_IPV6: {
++		const struct ipv6hdr *ip6hdr;
++
+ 		/* IPv6 doesn't really use broadcast mac address, but leave
+ 		 * that here just in case.
+ 		 */
+@@ -1407,7 +1412,11 @@ int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev)
+ 			break;
+ 		}
+ 
+-		/* Additianally, DAD probes should not be tx-balanced as that
++		if (!pskb_network_may_pull(skb, sizeof(*ip6hdr))) {
++			do_tx_balance = false;
++			break;
++		}
++		/* Additionally, DAD probes should not be tx-balanced as that
+ 		 * will lead to false positives for duplicate addresses and
+ 		 * prevent address configuration from working.
+ 		 */
+@@ -1417,17 +1426,26 @@ int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev)
+ 			break;
+ 		}
+ 
+-		hash_start = (char *)&(ipv6_hdr(skb)->daddr);
+-		hash_size = sizeof(ipv6_hdr(skb)->daddr);
++		hash_start = (char *)&ip6hdr->daddr;
++		hash_size = sizeof(ip6hdr->daddr);
+ 		break;
+-	case ETH_P_IPX:
+-		if (ipx_hdr(skb)->ipx_checksum != IPX_NO_CHECKSUM) {
++	}
++	case ETH_P_IPX: {
++		const struct ipxhdr *ipxhdr;
++
++		if (pskb_network_may_pull(skb, sizeof(*ipxhdr))) {
++			do_tx_balance = false;
++			break;
++		}
++		ipxhdr = (struct ipxhdr *)skb_network_header(skb);
++
++		if (ipxhdr->ipx_checksum != IPX_NO_CHECKSUM) {
+ 			/* something is wrong with this packet */
+ 			do_tx_balance = false;
+ 			break;
+ 		}
+ 
+-		if (ipx_hdr(skb)->ipx_type != IPX_TYPE_NCP) {
++		if (ipxhdr->ipx_type != IPX_TYPE_NCP) {
+ 			/* The only protocol worth balancing in
+ 			 * this family since it has an "ARP" like
+ 			 * mechanism
+@@ -1436,9 +1454,11 @@ int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev)
+ 			break;
+ 		}
+ 
++		eth_data = eth_hdr(skb);
+ 		hash_start = (char *)eth_data->h_dest;
+ 		hash_size = ETH_ALEN;
+ 		break;
++	}
+ 	case ETH_P_ARP:
+ 		do_tx_balance = false;
+ 		if (bond_info->rlb_enabled)
+diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c
+index 9530ee12726f..3cb99ce7325b 100644
+--- a/drivers/net/ethernet/broadcom/bcmsysport.c
++++ b/drivers/net/ethernet/broadcom/bcmsysport.c
+@@ -1997,6 +1997,9 @@ static int bcm_sysport_resume(struct device *d)
+ 
+ 	umac_reset(priv);
+ 
++	/* Disable the UniMAC RX/TX */
++	umac_enable_set(priv, CMD_RX_EN | CMD_TX_EN, 0);
++
+ 	/* We may have been suspended and never received a WOL event that
+ 	 * would turn off MPD detection, take care of that now
+ 	 */
+diff --git a/drivers/net/ethernet/dec/tulip/dmfe.c b/drivers/net/ethernet/dec/tulip/dmfe.c
+index afd8e78e024e..ff5cae052c40 100644
+--- a/drivers/net/ethernet/dec/tulip/dmfe.c
++++ b/drivers/net/ethernet/dec/tulip/dmfe.c
+@@ -2228,15 +2228,16 @@ static int __init dmfe_init_module(void)
+ 	if (cr6set)
+ 		dmfe_cr6_user_set = cr6set;
+ 
+- 	switch(mode) {
+-   	case DMFE_10MHF:
++	switch (mode) {
++	case DMFE_10MHF:
+ 	case DMFE_100MHF:
+ 	case DMFE_10MFD:
+ 	case DMFE_100MFD:
+ 	case DMFE_1M_HPNA:
+ 		dmfe_media_mode = mode;
+ 		break;
+-	default:dmfe_media_mode = DMFE_AUTO;
++	default:
++		dmfe_media_mode = DMFE_AUTO;
+ 		break;
+ 	}
+ 
+diff --git a/drivers/net/ethernet/dec/tulip/uli526x.c b/drivers/net/ethernet/dec/tulip/uli526x.c
+index 447d09272ab7..7e0e36a3270c 100644
+--- a/drivers/net/ethernet/dec/tulip/uli526x.c
++++ b/drivers/net/ethernet/dec/tulip/uli526x.c
+@@ -1813,8 +1813,8 @@ static int __init uli526x_init_module(void)
+ 	if (cr6set)
+ 		uli526x_cr6_user_set = cr6set;
+ 
+- 	switch (mode) {
+-   	case ULI526X_10MHF:
++	switch (mode) {
++	case ULI526X_10MHF:
+ 	case ULI526X_100MHF:
+ 	case ULI526X_10MFD:
+ 	case ULI526X_100MFD:
+diff --git a/drivers/net/ethernet/smsc/smc911x.c b/drivers/net/ethernet/smsc/smc911x.c
+index 37fb6dfc1087..0be9c74238fd 100644
+--- a/drivers/net/ethernet/smsc/smc911x.c
++++ b/drivers/net/ethernet/smsc/smc911x.c
+@@ -945,7 +945,7 @@ static void smc911x_phy_configure(struct work_struct *work)
+ 	if (lp->ctl_rspeed != 100)
+ 		my_ad_caps &= ~(ADVERTISE_100BASE4|ADVERTISE_100FULL|ADVERTISE_100HALF);
+ 
+-	 if (!lp->ctl_rfduplx)
++	if (!lp->ctl_rfduplx)
+ 		my_ad_caps &= ~(ADVERTISE_100FULL|ADVERTISE_10FULL);
+ 
+ 	/* Update our Auto-Neg Advertisement Register */
+diff --git a/drivers/net/ppp/ppp_async.c b/drivers/net/ppp/ppp_async.c
+index 9c889e0303dd..cef40de1bd05 100644
+--- a/drivers/net/ppp/ppp_async.c
++++ b/drivers/net/ppp/ppp_async.c
+@@ -878,15 +878,15 @@ ppp_async_input(struct asyncppp *ap, const unsigned char *buf,
+ 				skb = dev_alloc_skb(ap->mru + PPP_HDRLEN + 2);
+ 				if (!skb)
+ 					goto nomem;
+- 				ap->rpkt = skb;
+- 			}
+- 			if (skb->len == 0) {
+- 				/* Try to get the payload 4-byte aligned.
+- 				 * This should match the
+- 				 * PPP_ALLSTATIONS/PPP_UI/compressed tests in
+- 				 * process_input_packet, but we do not have
+- 				 * enough chars here to test buf[1] and buf[2].
+- 				 */
++				ap->rpkt = skb;
++			}
++			if (skb->len == 0) {
++				/* Try to get the payload 4-byte aligned.
++				 * This should match the
++				 * PPP_ALLSTATIONS/PPP_UI/compressed tests in
++				 * process_input_packet, but we do not have
++				 * enough chars here to test buf[1] and buf[2].
++				 */
+ 				if (buf[0] != PPP_ALLSTATIONS)
+ 					skb_reserve(skb, 2 + (buf[0] & 1));
+ 			}
+diff --git a/drivers/net/wireless/brcm80211/brcmfmac/usb.c b/drivers/net/wireless/brcm80211/brcmfmac/usb.c
+index b9bfa592bcab..2cb3f12dccbd 100644
+--- a/drivers/net/wireless/brcm80211/brcmfmac/usb.c
++++ b/drivers/net/wireless/brcm80211/brcmfmac/usb.c
+@@ -426,6 +426,7 @@ fail:
+ 			usb_free_urb(req->urb);
+ 		list_del(q->next);
+ 	}
++	kfree(reqs);
+ 	return NULL;
+ 
+ }
+diff --git a/drivers/net/wireless/libertas/cfg.c b/drivers/net/wireless/libertas/cfg.c
+index 0824697c3dca..7d55de21b190 100644
+--- a/drivers/net/wireless/libertas/cfg.c
++++ b/drivers/net/wireless/libertas/cfg.c
+@@ -1853,6 +1853,8 @@ static int lbs_ibss_join_existing(struct lbs_private *priv,
+ 		rates_max = rates_eid[1];
+ 		if (rates_max > MAX_RATES) {
+ 			lbs_deb_join("invalid rates");
++			rcu_read_unlock();
++			ret = -EINVAL;
+ 			goto out;
+ 		}
+ 		rates = cmd.bss.rates;
+diff --git a/drivers/net/wireless/mwifiex/scan.c b/drivers/net/wireless/mwifiex/scan.c
+index 39b78dc1bd92..e7c8972431d3 100644
+--- a/drivers/net/wireless/mwifiex/scan.c
++++ b/drivers/net/wireless/mwifiex/scan.c
+@@ -2568,6 +2568,13 @@ mwifiex_cmd_append_vsie_tlv(struct mwifiex_private *priv,
+ 			vs_param_set->header.len =
+ 				cpu_to_le16((((u16) priv->vs_ie[id].ie[1])
+ 				& 0x00FF) + 2);
++			if (le16_to_cpu(vs_param_set->header.len) >
++				MWIFIEX_MAX_VSIE_LEN) {
++				mwifiex_dbg(priv->adapter, ERROR,
++					    "Invalid param length!\n");
++				break;
++			}
++
+ 			memcpy(vs_param_set->ie, priv->vs_ie[id].ie,
+ 			       le16_to_cpu(vs_param_set->header.len));
+ 			*buffer += le16_to_cpu(vs_param_set->header.len) +
+diff --git a/drivers/net/wireless/mwifiex/sta_ioctl.c b/drivers/net/wireless/mwifiex/sta_ioctl.c
+index a13c6f1712b3..a1c376c5dab9 100644
+--- a/drivers/net/wireless/mwifiex/sta_ioctl.c
++++ b/drivers/net/wireless/mwifiex/sta_ioctl.c
+@@ -232,6 +232,7 @@ static int mwifiex_process_country_ie(struct mwifiex_private *priv,
+ 
+ 	if (country_ie_len >
+ 	    (IEEE80211_COUNTRY_STRING_LEN + MWIFIEX_MAX_TRIPLET_802_11D)) {
++		rcu_read_unlock();
+ 		mwifiex_dbg(priv->adapter, ERROR,
+ 			    "11D: country_ie_len overflow!, deauth AP\n");
+ 		return -EINVAL;
+diff --git a/drivers/net/wireless/mwifiex/wmm.c b/drivers/net/wireless/mwifiex/wmm.c
+index 7015dfab49cf..3a2ecb6cf1c3 100644
+--- a/drivers/net/wireless/mwifiex/wmm.c
++++ b/drivers/net/wireless/mwifiex/wmm.c
+@@ -978,6 +978,10 @@ int mwifiex_ret_wmm_get_status(struct mwifiex_private *priv,
+ 				    "WMM Parameter Set Count: %d\n",
+ 				    wmm_param_ie->qos_info_bitmap & mask);
+ 
++			if (wmm_param_ie->vend_hdr.len + 2 >
++				sizeof(struct ieee_types_wmm_parameter))
++				break;
++
+ 			memcpy((u8 *) &priv->curr_bss_params.bss_descriptor.
+ 			       wmm_ie, wmm_param_ie,
+ 			       wmm_param_ie->vend_hdr.len + 2);
+diff --git a/drivers/nfc/pn544/pn544.c b/drivers/nfc/pn544/pn544.c
+index 12e819ddf17a..3afc53ff7369 100644
+--- a/drivers/nfc/pn544/pn544.c
++++ b/drivers/nfc/pn544/pn544.c
+@@ -704,7 +704,7 @@ static int pn544_hci_check_presence(struct nfc_hci_dev *hdev,
+ 		    target->nfcid1_len != 10)
+ 			return -EOPNOTSUPP;
+ 
+-		 return nfc_hci_send_cmd(hdev, NFC_HCI_RF_READER_A_GATE,
++		return nfc_hci_send_cmd(hdev, NFC_HCI_RF_READER_A_GATE,
+ 				     PN544_RF_READER_CMD_ACTIVATE_NEXT,
+ 				     target->nfcid1, target->nfcid1_len, NULL);
+ 	} else if (target->supported_protocols & (NFC_PROTO_JEWEL_MASK |
+diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
+index e2a48415d969..4ba54ffb3a4b 100644
+--- a/drivers/of/Kconfig
++++ b/drivers/of/Kconfig
+@@ -112,4 +112,8 @@ config OF_OVERLAY
+ 	  While this option is selected automatically when needed, you can
+ 	  enable it manually to improve device tree unit test coverage.
+ 
++config OF_DMA_DEFAULT_COHERENT
++	# arches should select this if DMA is coherent by default for OF devices
++	bool
++
+ endif # OF
+diff --git a/drivers/of/address.c b/drivers/of/address.c
+index 4fe5fe21cd49..b3bf8762f4e8 100644
+--- a/drivers/of/address.c
++++ b/drivers/of/address.c
+@@ -1009,12 +1009,16 @@ EXPORT_SYMBOL_GPL(of_dma_get_range);
+  * @np:	device node
+  *
+  * It returns true if "dma-coherent" property was found
+- * for this device in DT.
++ * for this device in the DT, or if DMA is coherent by
++ * default for OF devices on the current platform.
+  */
+ bool of_dma_is_coherent(struct device_node *np)
+ {
+ 	struct device_node *node = of_node_get(np);
+ 
++	if (IS_ENABLED(CONFIG_OF_DMA_DEFAULT_COHERENT))
++		return true;
++
+ 	while (node) {
+ 		if (of_property_read_bool(node, "dma-coherent")) {
+ 			of_node_put(node);
+diff --git a/drivers/pci/host/pci-keystone-dw.c b/drivers/pci/host/pci-keystone-dw.c
+index 6153853ca9c3..988e7e7350c7 100644
+--- a/drivers/pci/host/pci-keystone-dw.c
++++ b/drivers/pci/host/pci-keystone-dw.c
+@@ -450,7 +450,7 @@ void ks_dw_pcie_initiate_link_train(struct keystone_pcie *ks_pcie)
+ 	/* Disable Link training */
+ 	val = readl(ks_pcie->va_app_base + CMD_STATUS);
+ 	val &= ~LTSSM_EN_VAL;
+-	writel(LTSSM_EN_VAL | val,  ks_pcie->va_app_base + CMD_STATUS);
++	writel(val,  ks_pcie->va_app_base + CMD_STATUS);
+ 
+ 	/* Initiate Link Training */
+ 	val = readl(ks_pcie->va_app_base + CMD_STATUS);
+diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a7778.c b/drivers/pinctrl/sh-pfc/pfc-r8a7778.c
+index bbd35dc1a0c4..4d0ef5e9e9d8 100644
+--- a/drivers/pinctrl/sh-pfc/pfc-r8a7778.c
++++ b/drivers/pinctrl/sh-pfc/pfc-r8a7778.c
+@@ -2324,7 +2324,7 @@ static const struct pinmux_cfg_reg pinmux_config_regs[] = {
+ 		FN_ATAG0_A,	0,		FN_REMOCON_B,	0,
+ 		/* IP0_11_8 [4] */
+ 		FN_SD1_DAT2_A,	FN_MMC_D2,	0,		FN_BS,
+-		FN_ATADIR0_A,	0,		FN_SDSELF_B,	0,
++		FN_ATADIR0_A,	0,		FN_SDSELF_A,	0,
+ 		FN_PWM4_B,	0,		0,		0,
+ 		0,		0,		0,		0,
+ 		/* IP0_7_5 [3] */
+@@ -2366,7 +2366,7 @@ static const struct pinmux_cfg_reg pinmux_config_regs[] = {
+ 		FN_TS_SDAT0_A,	0,		0,		0,
+ 		0,		0,		0,		0,
+ 		/* IP1_10_8 [3] */
+-		FN_SD1_CLK_B,	FN_MMC_D6,	0,		FN_A24,
++		FN_SD1_CD_A,	FN_MMC_D6,	0,		FN_A24,
+ 		FN_DREQ1_A,	0,		FN_HRX0_B,	FN_TS_SPSYNC0_A,
+ 		/* IP1_7_5 [3] */
+ 		FN_A23,		FN_HTX0_B,	FN_TX2_B,	FN_DACK2_A,
+diff --git a/drivers/power/ltc2941-battery-gauge.c b/drivers/power/ltc2941-battery-gauge.c
+index 4adf2ba021ce..043de9d039d5 100644
+--- a/drivers/power/ltc2941-battery-gauge.c
++++ b/drivers/power/ltc2941-battery-gauge.c
+@@ -364,7 +364,7 @@ static int ltc294x_i2c_remove(struct i2c_client *client)
+ {
+ 	struct ltc294x_info *info = i2c_get_clientdata(client);
+ 
+-	cancel_delayed_work(&info->work);
++	cancel_delayed_work_sync(&info->work);
+ 	power_supply_unregister(info->supply);
+ 	return 0;
+ }
+diff --git a/drivers/rtc/rtc-hym8563.c b/drivers/rtc/rtc-hym8563.c
+index b1b4746a0eab..dbec596494eb 100644
+--- a/drivers/rtc/rtc-hym8563.c
++++ b/drivers/rtc/rtc-hym8563.c
+@@ -105,7 +105,7 @@ static int hym8563_rtc_read_time(struct device *dev, struct rtc_time *tm)
+ 
+ 	if (!hym8563->valid) {
+ 		dev_warn(&client->dev, "no valid clock/calendar values available\n");
+-		return -EPERM;
++		return -EINVAL;
+ 	}
+ 
+ 	ret = i2c_smbus_read_i2c_block_data(client, HYM8563_SEC, 7, buf);
+diff --git a/drivers/scsi/csiostor/csio_scsi.c b/drivers/scsi/csiostor/csio_scsi.c
+index ddbdaade654d..11db61d3b966 100644
+--- a/drivers/scsi/csiostor/csio_scsi.c
++++ b/drivers/scsi/csiostor/csio_scsi.c
+@@ -1383,7 +1383,7 @@ csio_device_reset(struct device *dev,
+ 		return -EINVAL;
+ 
+ 	/* Delete NPIV lnodes */
+-	 csio_lnodes_exit(hw, 1);
++	csio_lnodes_exit(hw, 1);
+ 
+ 	/* Block upper IOs */
+ 	csio_lnodes_block_request(hw);
+diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
+index 87059a6786f4..03d466c07513 100644
+--- a/drivers/scsi/qla2xxx/qla_mbx.c
++++ b/drivers/scsi/qla2xxx/qla_mbx.c
+@@ -5455,9 +5455,8 @@ qla2x00_dump_mctp_data(scsi_qla_host_t *vha, dma_addr_t req_dma, uint32_t addr,
+ 	mcp->mb[7] = LSW(MSD(req_dma));
+ 	mcp->mb[8] = MSW(addr);
+ 	/* Setting RAM ID to valid */
+-	mcp->mb[10] |= BIT_7;
+ 	/* For MCTP RAM ID is 0x40 */
+-	mcp->mb[10] |= 0x40;
++	mcp->mb[10] = BIT_7 | 0x40;
+ 
+ 	mcp->out_mb |= MBX_10|MBX_8|MBX_7|MBX_6|MBX_5|MBX_4|MBX_3|MBX_2|MBX_1|
+ 	    MBX_0;
+diff --git a/drivers/scsi/qla2xxx/qla_nx.c b/drivers/scsi/qla2xxx/qla_nx.c
+index b6b4cfdd7620..65f8d2d94159 100644
+--- a/drivers/scsi/qla2xxx/qla_nx.c
++++ b/drivers/scsi/qla2xxx/qla_nx.c
+@@ -10,6 +10,7 @@
+ #include <linux/ratelimit.h>
+ #include <linux/vmalloc.h>
+ #include <scsi/scsi_tcq.h>
++#include <asm/unaligned.h>
+ 
+ #define MASK(n)			((1ULL<<(n))-1)
+ #define MN_WIN(addr) (((addr & 0x1fc0000) >> 1) | \
+@@ -1600,8 +1601,7 @@ qla82xx_get_bootld_offset(struct qla_hw_data *ha)
+ 	return (u8 *)&ha->hablob->fw->data[offset];
+ }
+ 
+-static __le32
+-qla82xx_get_fw_size(struct qla_hw_data *ha)
++static u32 qla82xx_get_fw_size(struct qla_hw_data *ha)
+ {
+ 	struct qla82xx_uri_data_desc *uri_desc = NULL;
+ 
+@@ -1612,7 +1612,7 @@ qla82xx_get_fw_size(struct qla_hw_data *ha)
+ 			return cpu_to_le32(uri_desc->size);
+ 	}
+ 
+-	return cpu_to_le32(*(u32 *)&ha->hablob->fw->data[FW_SIZE_OFFSET]);
++	return get_unaligned_le32(&ha->hablob->fw->data[FW_SIZE_OFFSET]);
+ }
+ 
+ static u8 *
+@@ -1803,7 +1803,7 @@ qla82xx_fw_load_from_blob(struct qla_hw_data *ha)
+ 	}
+ 
+ 	flashaddr = FLASH_ADDR_START;
+-	size = (__force u32)qla82xx_get_fw_size(ha) / 8;
++	size = qla82xx_get_fw_size(ha) / 8;
+ 	ptr64 = (u64 *)qla82xx_get_fw_offs(ha);
+ 
+ 	for (i = 0; i < size; i++) {
+diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
+index f714d5f917d1..3fda5836aac6 100644
+--- a/drivers/scsi/qla4xxx/ql4_os.c
++++ b/drivers/scsi/qla4xxx/ql4_os.c
+@@ -4150,7 +4150,7 @@ static void qla4xxx_mem_free(struct scsi_qla_host *ha)
+ 		dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
+ 				  ha->queues_dma);
+ 
+-	 if (ha->fw_dump)
++	if (ha->fw_dump)
+ 		vfree(ha->fw_dump);
+ 
+ 	ha->queues_len = 0;
+diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
+index fcf5141bf950..19f82069c68a 100644
+--- a/drivers/scsi/ufs/ufshcd.c
++++ b/drivers/scsi/ufs/ufshcd.c
+@@ -4324,7 +4324,8 @@ static int ufshcd_probe_hba(struct ufs_hba *hba)
+ 			ufshcd_init_icc_levels(hba);
+ 
+ 		/* Add required well known logical units to scsi mid layer */
+-		if (ufshcd_scsi_add_wlus(hba))
++		ret = ufshcd_scsi_add_wlus(hba);
++		if (ret)
+ 			goto out;
+ 
+ 		scsi_scan_host(hba->host);
+diff --git a/drivers/usb/gadget/function/f_ecm.c b/drivers/usb/gadget/function/f_ecm.c
+index 4ce19b860289..79b52dce6b9a 100644
+--- a/drivers/usb/gadget/function/f_ecm.c
++++ b/drivers/usb/gadget/function/f_ecm.c
+@@ -56,6 +56,7 @@ struct f_ecm {
+ 	struct usb_ep			*notify;
+ 	struct usb_request		*notify_req;
+ 	u8				notify_state;
++	atomic_t			notify_count;
+ 	bool				is_open;
+ 
+ 	/* FIXME is_open needs some irq-ish locking
+@@ -384,7 +385,7 @@ static void ecm_do_notify(struct f_ecm *ecm)
+ 	int				status;
+ 
+ 	/* notification already in flight? */
+-	if (!req)
++	if (atomic_read(&ecm->notify_count))
+ 		return;
+ 
+ 	event = req->buf;
+@@ -424,10 +425,10 @@ static void ecm_do_notify(struct f_ecm *ecm)
+ 	event->bmRequestType = 0xA1;
+ 	event->wIndex = cpu_to_le16(ecm->ctrl_id);
+ 
+-	ecm->notify_req = NULL;
++	atomic_inc(&ecm->notify_count);
+ 	status = usb_ep_queue(ecm->notify, req, GFP_ATOMIC);
+ 	if (status < 0) {
+-		ecm->notify_req = req;
++		atomic_dec(&ecm->notify_count);
+ 		DBG(cdev, "notify --> %d\n", status);
+ 	}
+ }
+@@ -452,17 +453,19 @@ static void ecm_notify_complete(struct usb_ep *ep, struct usb_request *req)
+ 	switch (req->status) {
+ 	case 0:
+ 		/* no fault */
++		atomic_dec(&ecm->notify_count);
+ 		break;
+ 	case -ECONNRESET:
+ 	case -ESHUTDOWN:
++		atomic_set(&ecm->notify_count, 0);
+ 		ecm->notify_state = ECM_NOTIFY_NONE;
+ 		break;
+ 	default:
+ 		DBG(cdev, "event %02x --> %d\n",
+ 			event->bNotificationType, req->status);
++		atomic_dec(&ecm->notify_count);
+ 		break;
+ 	}
+-	ecm->notify_req = req;
+ 	ecm_do_notify(ecm);
+ }
+ 
+@@ -909,6 +912,11 @@ static void ecm_unbind(struct usb_configuration *c, struct usb_function *f)
+ 
+ 	usb_free_all_descriptors(f);
+ 
++	if (atomic_read(&ecm->notify_count)) {
++		usb_ep_dequeue(ecm->notify, ecm->notify_req);
++		atomic_set(&ecm->notify_count, 0);
++	}
++
+ 	kfree(ecm->notify_req->buf);
+ 	usb_ep_free_request(ecm->notify, ecm->notify_req);
+ }
+diff --git a/drivers/usb/gadget/function/f_ncm.c b/drivers/usb/gadget/function/f_ncm.c
+index 7ad798ace1e5..16908737bff1 100644
+--- a/drivers/usb/gadget/function/f_ncm.c
++++ b/drivers/usb/gadget/function/f_ncm.c
+@@ -57,6 +57,7 @@ struct f_ncm {
+ 	struct usb_ep			*notify;
+ 	struct usb_request		*notify_req;
+ 	u8				notify_state;
++	atomic_t			notify_count;
+ 	bool				is_open;
+ 
+ 	const struct ndp_parser_opts	*parser_opts;
+@@ -480,7 +481,7 @@ static void ncm_do_notify(struct f_ncm *ncm)
+ 	int				status;
+ 
+ 	/* notification already in flight? */
+-	if (!req)
++	if (atomic_read(&ncm->notify_count))
+ 		return;
+ 
+ 	event = req->buf;
+@@ -520,7 +521,8 @@ static void ncm_do_notify(struct f_ncm *ncm)
+ 	event->bmRequestType = 0xA1;
+ 	event->wIndex = cpu_to_le16(ncm->ctrl_id);
+ 
+-	ncm->notify_req = NULL;
++	atomic_inc(&ncm->notify_count);
++
+ 	/*
+ 	 * In double buffering if there is a space in FIFO,
+ 	 * completion callback can be called right after the call,
+@@ -530,7 +532,7 @@ static void ncm_do_notify(struct f_ncm *ncm)
+ 	status = usb_ep_queue(ncm->notify, req, GFP_ATOMIC);
+ 	spin_lock(&ncm->lock);
+ 	if (status < 0) {
+-		ncm->notify_req = req;
++		atomic_dec(&ncm->notify_count);
+ 		DBG(cdev, "notify --> %d\n", status);
+ 	}
+ }
+@@ -565,17 +567,19 @@ static void ncm_notify_complete(struct usb_ep *ep, struct usb_request *req)
+ 	case 0:
+ 		VDBG(cdev, "Notification %02x sent\n",
+ 		     event->bNotificationType);
++		atomic_dec(&ncm->notify_count);
+ 		break;
+ 	case -ECONNRESET:
+ 	case -ESHUTDOWN:
++		atomic_set(&ncm->notify_count, 0);
+ 		ncm->notify_state = NCM_NOTIFY_NONE;
+ 		break;
+ 	default:
+ 		DBG(cdev, "event %02x --> %d\n",
+ 			event->bNotificationType, req->status);
++		atomic_dec(&ncm->notify_count);
+ 		break;
+ 	}
+-	ncm->notify_req = req;
+ 	ncm_do_notify(ncm);
+ 	spin_unlock(&ncm->lock);
+ }
+@@ -1559,6 +1563,11 @@ static void ncm_unbind(struct usb_configuration *c, struct usb_function *f)
+ 	ncm_string_defs[0].id = 0;
+ 	usb_free_all_descriptors(f);
+ 
++	if (atomic_read(&ncm->notify_count)) {
++		usb_ep_dequeue(ncm->notify, ncm->notify_req);
++		atomic_set(&ncm->notify_count, 0);
++	}
++
+ 	kfree(ncm->notify_req->buf);
+ 	usb_ep_free_request(ncm->notify, ncm->notify_req);
+ }
+diff --git a/drivers/usb/gadget/legacy/cdc2.c b/drivers/usb/gadget/legacy/cdc2.c
+index ecd8c8d62f2e..d70e7d43241a 100644
+--- a/drivers/usb/gadget/legacy/cdc2.c
++++ b/drivers/usb/gadget/legacy/cdc2.c
+@@ -229,7 +229,7 @@ static struct usb_composite_driver cdc_driver = {
+ 	.name		= "g_cdc",
+ 	.dev		= &device_desc,
+ 	.strings	= dev_strings,
+-	.max_speed	= USB_SPEED_HIGH,
++	.max_speed	= USB_SPEED_SUPER,
+ 	.bind		= cdc_bind,
+ 	.unbind		= cdc_unbind,
+ };
+diff --git a/drivers/usb/gadget/legacy/g_ffs.c b/drivers/usb/gadget/legacy/g_ffs.c
+index 320a81b2baa6..c0dccc65db3a 100644
+--- a/drivers/usb/gadget/legacy/g_ffs.c
++++ b/drivers/usb/gadget/legacy/g_ffs.c
+@@ -153,7 +153,7 @@ static struct usb_composite_driver gfs_driver = {
+ 	.name		= DRIVER_NAME,
+ 	.dev		= &gfs_dev_desc,
+ 	.strings	= gfs_dev_strings,
+-	.max_speed	= USB_SPEED_HIGH,
++	.max_speed	= USB_SPEED_SUPER,
+ 	.bind		= gfs_bind,
+ 	.unbind		= gfs_unbind,
+ };
+diff --git a/drivers/usb/gadget/legacy/multi.c b/drivers/usb/gadget/legacy/multi.c
+index 09c7c28f32f7..612c1608fccf 100644
+--- a/drivers/usb/gadget/legacy/multi.c
++++ b/drivers/usb/gadget/legacy/multi.c
+@@ -486,7 +486,7 @@ static struct usb_composite_driver multi_driver = {
+ 	.name		= "g_multi",
+ 	.dev		= &device_desc,
+ 	.strings	= dev_strings,
+-	.max_speed	= USB_SPEED_HIGH,
++	.max_speed	= USB_SPEED_SUPER,
+ 	.bind		= multi_bind,
+ 	.unbind		= multi_unbind,
+ 	.needs_serial	= 1,
+diff --git a/drivers/usb/gadget/legacy/ncm.c b/drivers/usb/gadget/legacy/ncm.c
+index 2bae4381332d..cc3ffacbade1 100644
+--- a/drivers/usb/gadget/legacy/ncm.c
++++ b/drivers/usb/gadget/legacy/ncm.c
+@@ -203,7 +203,7 @@ static struct usb_composite_driver ncm_driver = {
+ 	.name		= "g_ncm",
+ 	.dev		= &device_desc,
+ 	.strings	= dev_strings,
+-	.max_speed	= USB_SPEED_HIGH,
++	.max_speed	= USB_SPEED_SUPER,
+ 	.bind		= gncm_bind,
+ 	.unbind		= gncm_unbind,
+ };
+diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
+index 62caf3bcadf8..8eac5f75bca3 100644
+--- a/fs/btrfs/ctree.c
++++ b/fs/btrfs/ctree.c
+@@ -332,26 +332,6 @@ struct tree_mod_elem {
+ 	struct tree_mod_root old_root;
+ };
+ 
+-static inline void tree_mod_log_read_lock(struct btrfs_fs_info *fs_info)
+-{
+-	read_lock(&fs_info->tree_mod_log_lock);
+-}
+-
+-static inline void tree_mod_log_read_unlock(struct btrfs_fs_info *fs_info)
+-{
+-	read_unlock(&fs_info->tree_mod_log_lock);
+-}
+-
+-static inline void tree_mod_log_write_lock(struct btrfs_fs_info *fs_info)
+-{
+-	write_lock(&fs_info->tree_mod_log_lock);
+-}
+-
+-static inline void tree_mod_log_write_unlock(struct btrfs_fs_info *fs_info)
+-{
+-	write_unlock(&fs_info->tree_mod_log_lock);
+-}
+-
+ /*
+  * Pull a new tree mod seq number for our operation.
+  */
+@@ -371,14 +351,12 @@ static inline u64 btrfs_inc_tree_mod_seq(struct btrfs_fs_info *fs_info)
+ u64 btrfs_get_tree_mod_seq(struct btrfs_fs_info *fs_info,
+ 			   struct seq_list *elem)
+ {
+-	tree_mod_log_write_lock(fs_info);
+-	spin_lock(&fs_info->tree_mod_seq_lock);
++	write_lock(&fs_info->tree_mod_log_lock);
+ 	if (!elem->seq) {
+ 		elem->seq = btrfs_inc_tree_mod_seq(fs_info);
+ 		list_add_tail(&elem->list, &fs_info->tree_mod_seq_list);
+ 	}
+-	spin_unlock(&fs_info->tree_mod_seq_lock);
+-	tree_mod_log_write_unlock(fs_info);
++	write_unlock(&fs_info->tree_mod_log_lock);
+ 
+ 	return elem->seq;
+ }
+@@ -397,7 +375,7 @@ void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info,
+ 	if (!seq_putting)
+ 		return;
+ 
+-	spin_lock(&fs_info->tree_mod_seq_lock);
++	write_lock(&fs_info->tree_mod_log_lock);
+ 	list_del(&elem->list);
+ 	elem->seq = 0;
+ 
+@@ -408,19 +386,17 @@ void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info,
+ 				 * blocker with lower sequence number exists, we
+ 				 * cannot remove anything from the log
+ 				 */
+-				spin_unlock(&fs_info->tree_mod_seq_lock);
++				write_unlock(&fs_info->tree_mod_log_lock);
+ 				return;
+ 			}
+ 			min_seq = cur_elem->seq;
+ 		}
+ 	}
+-	spin_unlock(&fs_info->tree_mod_seq_lock);
+ 
+ 	/*
+ 	 * anything that's lower than the lowest existing (read: blocked)
+ 	 * sequence number can be removed from the tree.
+ 	 */
+-	tree_mod_log_write_lock(fs_info);
+ 	tm_root = &fs_info->tree_mod_log;
+ 	for (node = rb_first(tm_root); node; node = next) {
+ 		next = rb_next(node);
+@@ -430,7 +406,7 @@ void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info,
+ 		rb_erase(node, tm_root);
+ 		kfree(tm);
+ 	}
+-	tree_mod_log_write_unlock(fs_info);
++	write_unlock(&fs_info->tree_mod_log_lock);
+ }
+ 
+ /*
+@@ -441,7 +417,7 @@ void btrfs_put_tree_mod_seq(struct btrfs_fs_info *fs_info,
+  * operations, or the shifted logical of the affected block for all other
+  * operations.
+  *
+- * Note: must be called with write lock (tree_mod_log_write_lock).
++ * Note: must be called with write lock for fs_info::tree_mod_log_lock.
+  */
+ static noinline int
+ __tree_mod_log_insert(struct btrfs_fs_info *fs_info, struct tree_mod_elem *tm)
+@@ -481,7 +457,7 @@ __tree_mod_log_insert(struct btrfs_fs_info *fs_info, struct tree_mod_elem *tm)
+  * Determines if logging can be omitted. Returns 1 if it can. Otherwise, it
+  * returns zero with the tree_mod_log_lock acquired. The caller must hold
+  * this until all tree mod log insertions are recorded in the rb tree and then
+- * call tree_mod_log_write_unlock() to release.
++ * write unlock fs_info::tree_mod_log_lock.
+  */
+ static inline int tree_mod_dont_log(struct btrfs_fs_info *fs_info,
+ 				    struct extent_buffer *eb) {
+@@ -491,9 +467,9 @@ static inline int tree_mod_dont_log(struct btrfs_fs_info *fs_info,
+ 	if (eb && btrfs_header_level(eb) == 0)
+ 		return 1;
+ 
+-	tree_mod_log_write_lock(fs_info);
++	write_lock(&fs_info->tree_mod_log_lock);
+ 	if (list_empty(&(fs_info)->tree_mod_seq_list)) {
+-		tree_mod_log_write_unlock(fs_info);
++		write_unlock(&fs_info->tree_mod_log_lock);
+ 		return 1;
+ 	}
+ 
+@@ -557,7 +533,7 @@ tree_mod_log_insert_key(struct btrfs_fs_info *fs_info,
+ 	}
+ 
+ 	ret = __tree_mod_log_insert(fs_info, tm);
+-	tree_mod_log_write_unlock(fs_info);
++	write_unlock(&eb->fs_info->tree_mod_log_lock);
+ 	if (ret)
+ 		kfree(tm);
+ 
+@@ -621,7 +597,7 @@ tree_mod_log_insert_move(struct btrfs_fs_info *fs_info,
+ 	ret = __tree_mod_log_insert(fs_info, tm);
+ 	if (ret)
+ 		goto free_tms;
+-	tree_mod_log_write_unlock(fs_info);
++	write_unlock(&eb->fs_info->tree_mod_log_lock);
+ 	kfree(tm_list);
+ 
+ 	return 0;
+@@ -632,7 +608,7 @@ free_tms:
+ 		kfree(tm_list[i]);
+ 	}
+ 	if (locked)
+-		tree_mod_log_write_unlock(fs_info);
++		write_unlock(&eb->fs_info->tree_mod_log_lock);
+ 	kfree(tm_list);
+ 	kfree(tm);
+ 
+@@ -713,7 +689,7 @@ tree_mod_log_insert_root(struct btrfs_fs_info *fs_info,
+ 	if (!ret)
+ 		ret = __tree_mod_log_insert(fs_info, tm);
+ 
+-	tree_mod_log_write_unlock(fs_info);
++	write_unlock(&fs_info->tree_mod_log_lock);
+ 	if (ret)
+ 		goto free_tms;
+ 	kfree(tm_list);
+@@ -741,7 +717,7 @@ __tree_mod_log_search(struct btrfs_fs_info *fs_info, u64 start, u64 min_seq,
+ 	struct tree_mod_elem *found = NULL;
+ 	u64 index = start >> PAGE_CACHE_SHIFT;
+ 
+-	tree_mod_log_read_lock(fs_info);
++	read_lock(&fs_info->tree_mod_log_lock);
+ 	tm_root = &fs_info->tree_mod_log;
+ 	node = tm_root->rb_node;
+ 	while (node) {
+@@ -769,7 +745,7 @@ __tree_mod_log_search(struct btrfs_fs_info *fs_info, u64 start, u64 min_seq,
+ 			break;
+ 		}
+ 	}
+-	tree_mod_log_read_unlock(fs_info);
++	read_unlock(&fs_info->tree_mod_log_lock);
+ 
+ 	return found;
+ }
+@@ -850,7 +826,7 @@ tree_mod_log_eb_copy(struct btrfs_fs_info *fs_info, struct extent_buffer *dst,
+ 			goto free_tms;
+ 	}
+ 
+-	tree_mod_log_write_unlock(fs_info);
++	write_unlock(&fs_info->tree_mod_log_lock);
+ 	kfree(tm_list);
+ 
+ 	return 0;
+@@ -862,7 +838,7 @@ free_tms:
+ 		kfree(tm_list[i]);
+ 	}
+ 	if (locked)
+-		tree_mod_log_write_unlock(fs_info);
++		write_unlock(&fs_info->tree_mod_log_lock);
+ 	kfree(tm_list);
+ 
+ 	return ret;
+@@ -922,7 +898,7 @@ tree_mod_log_free_eb(struct btrfs_fs_info *fs_info, struct extent_buffer *eb)
+ 		goto free_tms;
+ 
+ 	ret = __tree_mod_log_free_eb(fs_info, tm_list, nritems);
+-	tree_mod_log_write_unlock(fs_info);
++	write_unlock(&eb->fs_info->tree_mod_log_lock);
+ 	if (ret)
+ 		goto free_tms;
+ 	kfree(tm_list);
+@@ -1284,7 +1260,7 @@ __tree_mod_log_rewind(struct btrfs_fs_info *fs_info, struct extent_buffer *eb,
+ 	unsigned long p_size = sizeof(struct btrfs_key_ptr);
+ 
+ 	n = btrfs_header_nritems(eb);
+-	tree_mod_log_read_lock(fs_info);
++	read_lock(&fs_info->tree_mod_log_lock);
+ 	while (tm && tm->seq >= time_seq) {
+ 		/*
+ 		 * all the operations are recorded with the operator used for
+@@ -1339,7 +1315,7 @@ __tree_mod_log_rewind(struct btrfs_fs_info *fs_info, struct extent_buffer *eb,
+ 		if (tm->index != first_tm->index)
+ 			break;
+ 	}
+-	tree_mod_log_read_unlock(fs_info);
++	read_unlock(&fs_info->tree_mod_log_lock);
+ 	btrfs_set_header_nritems(eb, n);
+ }
+ 
+diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
+index 4a91d3119e59..0b06d4942da7 100644
+--- a/fs/btrfs/ctree.h
++++ b/fs/btrfs/ctree.h
+@@ -1576,14 +1576,12 @@ struct btrfs_fs_info {
+ 	struct list_head delayed_iputs;
+ 	struct mutex cleaner_delayed_iput_mutex;
+ 
+-	/* this protects tree_mod_seq_list */
+-	spinlock_t tree_mod_seq_lock;
+ 	atomic64_t tree_mod_seq;
+-	struct list_head tree_mod_seq_list;
+ 
+-	/* this protects tree_mod_log */
++	/* this protects tree_mod_log and tree_mod_seq_list */
+ 	rwlock_t tree_mod_log_lock;
+ 	struct rb_root tree_mod_log;
++	struct list_head tree_mod_seq_list;
+ 
+ 	atomic_t nr_async_submits;
+ 	atomic_t async_submit_draining;
+diff --git a/fs/btrfs/delayed-ref.c b/fs/btrfs/delayed-ref.c
+index a2f165029ee6..bb1e32f77b69 100644
+--- a/fs/btrfs/delayed-ref.c
++++ b/fs/btrfs/delayed-ref.c
+@@ -279,7 +279,7 @@ void btrfs_merge_delayed_refs(struct btrfs_trans_handle *trans,
+ 	if (head->is_data)
+ 		return;
+ 
+-	spin_lock(&fs_info->tree_mod_seq_lock);
++	read_lock(&fs_info->tree_mod_log_lock);
+ 	if (!list_empty(&fs_info->tree_mod_seq_list)) {
+ 		struct seq_list *elem;
+ 
+@@ -287,7 +287,7 @@ void btrfs_merge_delayed_refs(struct btrfs_trans_handle *trans,
+ 					struct seq_list, list);
+ 		seq = elem->seq;
+ 	}
+-	spin_unlock(&fs_info->tree_mod_seq_lock);
++	read_unlock(&fs_info->tree_mod_log_lock);
+ 
+ 	ref = list_first_entry(&head->ref_list, struct btrfs_delayed_ref_node,
+ 			       list);
+@@ -315,7 +315,7 @@ int btrfs_check_delayed_seq(struct btrfs_fs_info *fs_info,
+ 	struct seq_list *elem;
+ 	int ret = 0;
+ 
+-	spin_lock(&fs_info->tree_mod_seq_lock);
++	read_lock(&fs_info->tree_mod_log_lock);
+ 	if (!list_empty(&fs_info->tree_mod_seq_list)) {
+ 		elem = list_first_entry(&fs_info->tree_mod_seq_list,
+ 					struct seq_list, list);
+@@ -328,7 +328,7 @@ int btrfs_check_delayed_seq(struct btrfs_fs_info *fs_info,
+ 		}
+ 	}
+ 
+-	spin_unlock(&fs_info->tree_mod_seq_lock);
++	read_unlock(&fs_info->tree_mod_log_lock);
+ 	return ret;
+ }
+ 
+diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
+index d50fc503f73b..2fb533233e8e 100644
+--- a/fs/btrfs/disk-io.c
++++ b/fs/btrfs/disk-io.c
+@@ -2481,7 +2481,6 @@ int open_ctree(struct super_block *sb,
+ 	spin_lock_init(&fs_info->delayed_iput_lock);
+ 	spin_lock_init(&fs_info->defrag_inodes_lock);
+ 	spin_lock_init(&fs_info->free_chunk_lock);
+-	spin_lock_init(&fs_info->tree_mod_seq_lock);
+ 	spin_lock_init(&fs_info->super_lock);
+ 	spin_lock_init(&fs_info->qgroup_op_lock);
+ 	spin_lock_init(&fs_info->buffer_lock);
+diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
+index 6f5563ca70c1..2c86c472f670 100644
+--- a/fs/btrfs/extent_io.c
++++ b/fs/btrfs/extent_io.c
+@@ -4164,6 +4164,14 @@ retry:
+ 		 */
+ 		scanned = 1;
+ 		index = 0;
++
++		/*
++		 * If we're looping we could run into a page that is locked by a
++		 * writer and that writer could be waiting on writeback for a
++		 * page in our current bio, and thus deadlock, so flush the
++		 * write bio here.
++		 */
++		flush_write_bio(data);
+ 		goto retry;
+ 	}
+ 	btrfs_add_delayed_iput(inode);
+diff --git a/fs/btrfs/tests/btrfs-tests.c b/fs/btrfs/tests/btrfs-tests.c
+index 9626252ee6b4..69255148f0c8 100644
+--- a/fs/btrfs/tests/btrfs-tests.c
++++ b/fs/btrfs/tests/btrfs-tests.c
+@@ -109,7 +109,6 @@ struct btrfs_fs_info *btrfs_alloc_dummy_fs_info(void)
+ 	spin_lock_init(&fs_info->qgroup_op_lock);
+ 	spin_lock_init(&fs_info->super_lock);
+ 	spin_lock_init(&fs_info->fs_roots_radix_lock);
+-	spin_lock_init(&fs_info->tree_mod_seq_lock);
+ 	mutex_init(&fs_info->qgroup_ioctl_lock);
+ 	mutex_init(&fs_info->qgroup_rescan_lock);
+ 	rwlock_init(&fs_info->tree_mod_log_lock);
+diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
+index 098016338f98..64e449eb2ecd 100644
+--- a/fs/btrfs/transaction.c
++++ b/fs/btrfs/transaction.c
+@@ -1814,6 +1814,14 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
+ 	struct btrfs_inode *btree_ino = BTRFS_I(root->fs_info->btree_inode);
+ 	int ret;
+ 
++	/*
++	 * Some places just start a transaction to commit it.  We need to make
++	 * sure that if this commit fails that the abort code actually marks the
++	 * transaction as failed, so set trans->dirty to make the abort code do
++	 * the right thing.
++	 */
++	trans->dirty = true;
++
+ 	/* Stop the commit early if ->aborted is set */
+ 	if (unlikely(ACCESS_ONCE(cur_trans->aborted))) {
+ 		ret = cur_trans->aborted;
+diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
+index f9c3907bf159..4320f346b0b9 100644
+--- a/fs/btrfs/tree-log.c
++++ b/fs/btrfs/tree-log.c
+@@ -4404,13 +4404,8 @@ static int btrfs_log_trailing_hole(struct btrfs_trans_handle *trans,
+ 					struct btrfs_file_extent_item);
+ 
+ 		if (btrfs_file_extent_type(leaf, extent) ==
+-		    BTRFS_FILE_EXTENT_INLINE) {
+-			len = btrfs_file_extent_inline_len(leaf,
+-							   path->slots[0],
+-							   extent);
+-			ASSERT(len == i_size);
++		    BTRFS_FILE_EXTENT_INLINE)
+ 			return 0;
+-		}
+ 
+ 		len = btrfs_file_extent_num_bytes(leaf, extent);
+ 		/* Last extent goes beyond i_size, no need to log a hole. */
+diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
+index 84e60b3a5c7c..d4472a494758 100644
+--- a/fs/cifs/smb2pdu.c
++++ b/fs/cifs/smb2pdu.c
+@@ -250,9 +250,14 @@ smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon)
+ 	 */
+ 	mutex_lock(&tcon->ses->session_mutex);
+ 	rc = cifs_negotiate_protocol(0, tcon->ses);
+-	if (!rc && tcon->ses->need_reconnect)
++	if (!rc && tcon->ses->need_reconnect) {
+ 		rc = cifs_setup_session(0, tcon->ses, nls_codepage);
+-
++		if ((rc == -EACCES) && !tcon->retry) {
++			rc = -EHOSTDOWN;
++			mutex_unlock(&tcon->ses->session_mutex);
++			goto failed;
++		}
++	}
+ 	if (rc || !tcon->need_reconnect) {
+ 		mutex_unlock(&tcon->ses->session_mutex);
+ 		goto out;
+@@ -286,6 +291,7 @@ out:
+ 	case SMB2_SET_INFO:
+ 		rc = -EAGAIN;
+ 	}
++failed:
+ 	unload_nls(nls_codepage);
+ 	return rc;
+ }
+diff --git a/fs/ext2/super.c b/fs/ext2/super.c
+index 860024392969..0d44f7ef3c5d 100644
+--- a/fs/ext2/super.c
++++ b/fs/ext2/super.c
+@@ -1051,9 +1051,9 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
+ 
+ 	if (EXT2_BLOCKS_PER_GROUP(sb) == 0)
+ 		goto cantfind_ext2;
+- 	sbi->s_groups_count = ((le32_to_cpu(es->s_blocks_count) -
+- 				le32_to_cpu(es->s_first_data_block) - 1)
+- 					/ EXT2_BLOCKS_PER_GROUP(sb)) + 1;
++	sbi->s_groups_count = ((le32_to_cpu(es->s_blocks_count) -
++				le32_to_cpu(es->s_first_data_block) - 1)
++					/ EXT2_BLOCKS_PER_GROUP(sb)) + 1;
+ 	db_count = (sbi->s_groups_count + EXT2_DESC_PER_BLOCK(sb) - 1) /
+ 		   EXT2_DESC_PER_BLOCK(sb);
+ 	sbi->s_group_desc = kmalloc (db_count * sizeof (struct buffer_head *), GFP_KERNEL);
+diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c
+index 807eb6ef4f91..6f4f68967c31 100644
+--- a/fs/nfs/callback_proc.c
++++ b/fs/nfs/callback_proc.c
+@@ -368,7 +368,7 @@ static bool referring_call_exists(struct nfs_client *clp,
+ 				  uint32_t nrclists,
+ 				  struct referring_call_list *rclists)
+ {
+-	bool status = 0;
++	bool status = false;
+ 	int i, j;
+ 	struct nfs4_session *session;
+ 	struct nfs4_slot_table *tbl;
+diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
+index c690a1c0c4e5..2ac3d2527ad2 100644
+--- a/fs/nfs/dir.c
++++ b/fs/nfs/dir.c
+@@ -169,6 +169,17 @@ typedef struct {
+ 	unsigned int	eof:1;
+ } nfs_readdir_descriptor_t;
+ 
++static
++void nfs_readdir_init_array(struct page *page)
++{
++	struct nfs_cache_array *array;
++
++	array = kmap_atomic(page);
++	memset(array, 0, sizeof(struct nfs_cache_array));
++	array->eof_index = -1;
++	kunmap_atomic(array);
++}
++
+ /*
+  * The caller is responsible for calling nfs_readdir_release_array(page)
+  */
+@@ -202,6 +213,7 @@ void nfs_readdir_clear_array(struct page *page)
+ 	array = kmap_atomic(page);
+ 	for (i = 0; i < array->size; i++)
+ 		kfree(array->array[i].string.name);
++	array->size = 0;
+ 	kunmap_atomic(array);
+ }
+ 
+@@ -277,7 +289,7 @@ int nfs_readdir_search_for_pos(struct nfs_cache_array *array, nfs_readdir_descri
+ 	desc->cache_entry_index = index;
+ 	return 0;
+ out_eof:
+-	desc->eof = 1;
++	desc->eof = true;
+ 	return -EBADCOOKIE;
+ }
+ 
+@@ -331,7 +343,7 @@ int nfs_readdir_search_for_cookie(struct nfs_cache_array *array, nfs_readdir_des
+ 	if (array->eof_index >= 0) {
+ 		status = -EBADCOOKIE;
+ 		if (*desc->dir_cookie == array->last_cookie)
+-			desc->eof = 1;
++			desc->eof = true;
+ 	}
+ out:
+ 	return status;
+@@ -622,6 +634,8 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
+ 	int status = -ENOMEM;
+ 	unsigned int array_size = ARRAY_SIZE(pages);
+ 
++	nfs_readdir_init_array(page);
++
+ 	entry.prev_cookie = 0;
+ 	entry.cookie = desc->last_cookie;
+ 	entry.eof = 0;
+@@ -642,8 +656,8 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
+ 		status = PTR_ERR(array);
+ 		goto out_label_free;
+ 	}
+-	memset(array, 0, sizeof(struct nfs_cache_array));
+-	array->eof_index = -1;
++
++	array = kmap(page);
+ 
+ 	status = nfs_readdir_alloc_pages(pages, array_size);
+ 	if (status < 0)
+@@ -698,6 +712,7 @@ int nfs_readdir_filler(nfs_readdir_descriptor_t *desc, struct page* page)
+ 	unlock_page(page);
+ 	return 0;
+  error:
++	nfs_readdir_clear_array(page);
+ 	unlock_page(page);
+ 	return ret;
+ }
+@@ -705,8 +720,6 @@ int nfs_readdir_filler(nfs_readdir_descriptor_t *desc, struct page* page)
+ static
+ void cache_page_release(nfs_readdir_descriptor_t *desc)
+ {
+-	if (!desc->page->mapping)
+-		nfs_readdir_clear_array(desc->page);
+ 	page_cache_release(desc->page);
+ 	desc->page = NULL;
+ }
+@@ -720,19 +733,28 @@ struct page *get_cache_page(nfs_readdir_descriptor_t *desc)
+ 
+ /*
+  * Returns 0 if desc->dir_cookie was found on page desc->page_index
++ * and locks the page to prevent removal from the page cache.
+  */
+ static
+-int find_cache_page(nfs_readdir_descriptor_t *desc)
++int find_and_lock_cache_page(nfs_readdir_descriptor_t *desc)
+ {
+ 	int res;
+ 
+ 	desc->page = get_cache_page(desc);
+ 	if (IS_ERR(desc->page))
+ 		return PTR_ERR(desc->page);
+-
+-	res = nfs_readdir_search_array(desc);
++	res = lock_page_killable(desc->page);
+ 	if (res != 0)
+-		cache_page_release(desc);
++		goto error;
++	res = -EAGAIN;
++	if (desc->page->mapping != NULL) {
++		res = nfs_readdir_search_array(desc);
++		if (res == 0)
++			return 0;
++	}
++	unlock_page(desc->page);
++error:
++	cache_page_release(desc);
+ 	return res;
+ }
+ 
+@@ -747,7 +769,7 @@ int readdir_search_pagecache(nfs_readdir_descriptor_t *desc)
+ 		desc->last_cookie = 0;
+ 	}
+ 	do {
+-		res = find_cache_page(desc);
++		res = find_and_lock_cache_page(desc);
+ 	} while (res == -EAGAIN);
+ 	return res;
+ }
+@@ -776,7 +798,7 @@ int nfs_do_filldir(nfs_readdir_descriptor_t *desc)
+ 		ent = &array->array[i];
+ 		if (!dir_emit(desc->ctx, ent->string.name, ent->string.len,
+ 		    nfs_compat_user_ino64(ent->ino), ent->d_type)) {
+-			desc->eof = 1;
++			desc->eof = true;
+ 			break;
+ 		}
+ 		desc->ctx->pos++;
+@@ -788,11 +810,10 @@ int nfs_do_filldir(nfs_readdir_descriptor_t *desc)
+ 			ctx->duped = 1;
+ 	}
+ 	if (array->eof_index >= 0)
+-		desc->eof = 1;
++		desc->eof = true;
+ 
+ 	nfs_readdir_release_array(desc->page);
+ out:
+-	cache_page_release(desc);
+ 	dfprintk(DIRCACHE, "NFS: nfs_do_filldir() filling ended @ cookie %Lu; returning = %d\n",
+ 			(unsigned long long)*desc->dir_cookie, res);
+ 	return res;
+@@ -838,13 +859,13 @@ int uncached_readdir(nfs_readdir_descriptor_t *desc)
+ 
+ 	status = nfs_do_filldir(desc);
+ 
++ out_release:
++	nfs_readdir_clear_array(desc->page);
++	cache_page_release(desc);
+  out:
+ 	dfprintk(DIRCACHE, "NFS: %s: returns %d\n",
+ 			__func__, status);
+ 	return status;
+- out_release:
+-	cache_page_release(desc);
+-	goto out;
+ }
+ 
+ /* The file offset position represents the dirent entry number.  A
+@@ -890,7 +911,7 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx)
+ 		if (res == -EBADCOOKIE) {
+ 			res = 0;
+ 			/* This means either end of directory */
+-			if (*desc->dir_cookie && desc->eof == 0) {
++			if (*desc->dir_cookie && !desc->eof) {
+ 				/* Or that the server has 'lost' a cookie */
+ 				res = uncached_readdir(desc);
+ 				if (res == 0)
+@@ -910,6 +931,8 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx)
+ 			break;
+ 
+ 		res = nfs_do_filldir(desc);
++		unlock_page(desc->page);
++		cache_page_release(desc);
+ 		if (res < 0)
+ 			break;
+ 	} while (!desc->eof);
+diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
+index dac20f31f01f..92895f41d9a0 100644
+--- a/fs/nfs/nfs4client.c
++++ b/fs/nfs/nfs4client.c
+@@ -751,7 +751,7 @@ nfs4_find_client_sessionid(struct net *net, const struct sockaddr *addr,
+ 
+ 	spin_lock(&nn->nfs_client_lock);
+ 	list_for_each_entry(clp, &nn->nfs_client_list, cl_share_link) {
+-		if (nfs4_cb_match_client(addr, clp, minorversion) == false)
++		if (!nfs4_cb_match_client(addr, clp, minorversion))
+ 			continue;
+ 
+ 		if (!nfs4_has_session(clp))
+diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
+index 060482e349ef..013d27dc6f58 100644
+--- a/fs/overlayfs/inode.c
++++ b/fs/overlayfs/inode.c
+@@ -9,7 +9,6 @@
+ 
+ #include <linux/fs.h>
+ #include <linux/slab.h>
+-#include <linux/cred.h>
+ #include <linux/xattr.h>
+ #include "overlayfs.h"
+ 
+@@ -92,7 +91,6 @@ int ovl_permission(struct inode *inode, int mask)
+ 	struct ovl_entry *oe;
+ 	struct dentry *alias = NULL;
+ 	struct inode *realinode;
+-	const struct cred *old_cred;
+ 	struct dentry *realdentry;
+ 	bool is_upper;
+ 	int err;
+@@ -145,18 +143,7 @@ int ovl_permission(struct inode *inode, int mask)
+ 			goto out_dput;
+ 	}
+ 
+-	/*
+-	 * Check overlay inode with the creds of task and underlying inode
+-	 * with creds of mounter
+-	 */
+-	err = generic_permission(inode, mask);
+-	if (err)
+-		goto out_dput;
+-
+-	old_cred = ovl_override_creds(inode->i_sb);
+ 	err = __inode_permission(realinode, mask);
+-	revert_creds(old_cred);
+-
+ out_dput:
+ 	dput(alias);
+ 	return err;
+diff --git a/kernel/events/core.c b/kernel/events/core.c
+index a7014f854e67..203384a71fee 100644
+--- a/kernel/events/core.c
++++ b/kernel/events/core.c
+@@ -4887,7 +4887,15 @@ accounting:
+ 	 */
+ 	user_lock_limit *= num_online_cpus();
+ 
+-	user_locked = atomic_long_read(&user->locked_vm) + user_extra;
++	user_locked = atomic_long_read(&user->locked_vm);
++
++	/*
++	 * sysctl_perf_event_mlock may have changed, so that
++	 *     user->locked_vm > user_lock_limit
++	 */
++	if (user_locked > user_lock_limit)
++		user_locked = user_lock_limit;
++	user_locked += user_extra;
+ 
+ 	if (user_locked > user_lock_limit)
+ 		extra = user_locked - user_lock_limit;
+diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
+index b98810d2f3b4..a20368e1a720 100644
+--- a/kernel/time/clocksource.c
++++ b/kernel/time/clocksource.c
+@@ -272,8 +272,15 @@ static void clocksource_watchdog(unsigned long data)
+ 	next_cpu = cpumask_next(raw_smp_processor_id(), cpu_online_mask);
+ 	if (next_cpu >= nr_cpu_ids)
+ 		next_cpu = cpumask_first(cpu_online_mask);
+-	watchdog_timer.expires += WATCHDOG_INTERVAL;
+-	add_timer_on(&watchdog_timer, next_cpu);
++
++	/*
++	 * Arm timer if not already pending: could race with concurrent
++	 * pair clocksource_stop_watchdog() clocksource_start_watchdog().
++	 */
++	if (!timer_pending(&watchdog_timer)) {
++		watchdog_timer.expires += WATCHDOG_INTERVAL;
++		add_timer_on(&watchdog_timer, next_cpu);
++	}
+ out:
+ 	spin_unlock(&watchdog_lock);
+ }
+diff --git a/lib/test_kasan.c b/lib/test_kasan.c
+index c32f3b0048dc..275ff0b5162e 100644
+--- a/lib/test_kasan.c
++++ b/lib/test_kasan.c
+@@ -93,6 +93,7 @@ static noinline void __init kmalloc_oob_krealloc_more(void)
+ 	if (!ptr1 || !ptr2) {
+ 		pr_err("Allocation failed\n");
+ 		kfree(ptr1);
++		kfree(ptr2);
+ 		return;
+ 	}
+ 
+diff --git a/net/hsr/hsr_slave.c b/net/hsr/hsr_slave.c
+index 7d37366cc695..7992c533e6f7 100644
+--- a/net/hsr/hsr_slave.c
++++ b/net/hsr/hsr_slave.c
+@@ -30,6 +30,8 @@ static rx_handler_result_t hsr_handle_frame(struct sk_buff **pskb)
+ 
+ 	rcu_read_lock(); /* hsr->node_db, hsr->ports */
+ 	port = hsr_port_get_rcu(skb->dev);
++	if (!port)
++		goto finish_pass;
+ 
+ 	if (hsr_addr_is_self(port->hsr, eth_hdr(skb)->h_source)) {
+ 		/* Directly kill frames sent by ourselves */
+diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
+index 8e303cd7e2de..2ceda7ddaed5 100644
+--- a/net/ipv4/tcp.c
++++ b/net/ipv4/tcp.c
+@@ -2261,6 +2261,7 @@ int tcp_disconnect(struct sock *sk, int flags)
+ 	tp->window_clamp = 0;
+ 	tcp_set_ca_state(sk, TCP_CA_Open);
+ 	tcp_clear_retrans(tp);
++	tp->total_retrans = 0;
+ 	inet_csk_delack_init(sk);
+ 	/* Initialize rcv_mss to TCP_MIN_MSS to avoid division by 0
+ 	 * issue in __tcp_select_window()
+@@ -2272,6 +2273,8 @@ int tcp_disconnect(struct sock *sk, int flags)
+ 	dst_release(sk->sk_rx_dst);
+ 	sk->sk_rx_dst = NULL;
+ 	tcp_saved_syn_free(tp);
++	tp->segs_in = 0;
++	tp->segs_out = 0;
+ 	tp->bytes_acked = 0;
+ 	tp->bytes_received = 0;
+ 
+diff --git a/net/sched/cls_rsvp.h b/net/sched/cls_rsvp.h
+index 9992dfac6938..7317a64fdb79 100644
+--- a/net/sched/cls_rsvp.h
++++ b/net/sched/cls_rsvp.h
+@@ -455,10 +455,8 @@ static u32 gen_tunnel(struct rsvp_head *data)
+ 
+ static const struct nla_policy rsvp_policy[TCA_RSVP_MAX + 1] = {
+ 	[TCA_RSVP_CLASSID]	= { .type = NLA_U32 },
+-	[TCA_RSVP_DST]		= { .type = NLA_BINARY,
+-				    .len = RSVP_DST_LEN * sizeof(u32) },
+-	[TCA_RSVP_SRC]		= { .type = NLA_BINARY,
+-				    .len = RSVP_DST_LEN * sizeof(u32) },
++	[TCA_RSVP_DST]		= { .len = RSVP_DST_LEN * sizeof(u32) },
++	[TCA_RSVP_SRC]		= { .len = RSVP_DST_LEN * sizeof(u32) },
+ 	[TCA_RSVP_PINFO]	= { .len = sizeof(struct tc_rsvp_pinfo) },
+ };
+ 
+diff --git a/net/sched/cls_tcindex.c b/net/sched/cls_tcindex.c
+index 040d853f48b9..3086df21a1c1 100644
+--- a/net/sched/cls_tcindex.c
++++ b/net/sched/cls_tcindex.c
+@@ -267,6 +267,25 @@ tcindex_set_parms(struct net *net, struct tcf_proto *tp, unsigned long base,
+ 	cp->fall_through = p->fall_through;
+ 	cp->tp = tp;
+ 
++	if (tb[TCA_TCINDEX_HASH])
++		cp->hash = nla_get_u32(tb[TCA_TCINDEX_HASH]);
++
++	if (tb[TCA_TCINDEX_MASK])
++		cp->mask = nla_get_u16(tb[TCA_TCINDEX_MASK]);
++
++	if (tb[TCA_TCINDEX_SHIFT])
++		cp->shift = nla_get_u32(tb[TCA_TCINDEX_SHIFT]);
++
++	if (!cp->hash) {
++		/* Hash not specified, use perfect hash if the upper limit
++		 * of the hashing index is below the threshold.
++		 */
++		if ((cp->mask >> cp->shift) < PERFECT_HASH_THRESHOLD)
++			cp->hash = (cp->mask >> cp->shift) + 1;
++		else
++			cp->hash = DEFAULT_HASH_SIZE;
++	}
++
+ 	if (p->perfect) {
+ 		int i;
+ 
+@@ -274,7 +293,7 @@ tcindex_set_parms(struct net *net, struct tcf_proto *tp, unsigned long base,
+ 				      sizeof(*r) * cp->hash, GFP_KERNEL);
+ 		if (!cp->perfect)
+ 			goto errout;
+-		for (i = 0; i < cp->hash; i++)
++		for (i = 0; i < min(cp->hash, p->hash); i++)
+ 			tcf_exts_init(&cp->perfect[i].exts,
+ 				      TCA_TCINDEX_ACT, TCA_TCINDEX_POLICE);
+ 		balloc = 1;
+@@ -286,15 +305,6 @@ tcindex_set_parms(struct net *net, struct tcf_proto *tp, unsigned long base,
+ 	if (old_r)
+ 		cr.res = r->res;
+ 
+-	if (tb[TCA_TCINDEX_HASH])
+-		cp->hash = nla_get_u32(tb[TCA_TCINDEX_HASH]);
+-
+-	if (tb[TCA_TCINDEX_MASK])
+-		cp->mask = nla_get_u16(tb[TCA_TCINDEX_MASK]);
+-
+-	if (tb[TCA_TCINDEX_SHIFT])
+-		cp->shift = nla_get_u32(tb[TCA_TCINDEX_SHIFT]);
+-
+ 	err = -EBUSY;
+ 
+ 	/* Hash already allocated, make sure that we still meet the
+@@ -312,16 +322,6 @@ tcindex_set_parms(struct net *net, struct tcf_proto *tp, unsigned long base,
+ 	if (tb[TCA_TCINDEX_FALL_THROUGH])
+ 		cp->fall_through = nla_get_u32(tb[TCA_TCINDEX_FALL_THROUGH]);
+ 
+-	if (!cp->hash) {
+-		/* Hash not specified, use perfect hash if the upper limit
+-		 * of the hashing index is below the threshold.
+-		 */
+-		if ((cp->mask >> cp->shift) < PERFECT_HASH_THRESHOLD)
+-			cp->hash = (cp->mask >> cp->shift) + 1;
+-		else
+-			cp->hash = DEFAULT_HASH_SIZE;
+-	}
+-
+ 	if (!cp->perfect && !cp->h)
+ 		cp->alloc_hash = cp->hash;
+ 
+diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c
+index b5291ea54a3d..c1d1abde7072 100644
+--- a/net/sunrpc/auth_gss/svcauth_gss.c
++++ b/net/sunrpc/auth_gss/svcauth_gss.c
+@@ -1173,6 +1173,7 @@ static int gss_proxy_save_rsc(struct cache_detail *cd,
+ 		dprintk("RPC:       No creds found!\n");
+ 		goto out;
+ 	} else {
++		struct timespec64 boot;
+ 
+ 		/* steal creds */
+ 		rsci.cred = ud->creds;
+@@ -1193,6 +1194,9 @@ static int gss_proxy_save_rsc(struct cache_detail *cd,
+ 						&expiry, GFP_KERNEL);
+ 		if (status)
+ 			goto out;
++
++		getboottime64(&boot);
++		expiry -= boot.tv_sec;
+ 	}
+ 
+ 	rsci.h.expiry_time = expiry;
+diff --git a/sound/drivers/dummy.c b/sound/drivers/dummy.c
+index 67628616506e..e7dd0800965a 100644
+--- a/sound/drivers/dummy.c
++++ b/sound/drivers/dummy.c
+@@ -925,7 +925,7 @@ static void print_formats(struct snd_dummy *dummy,
+ {
+ 	int i;
+ 
+-	for (i = 0; i < SNDRV_PCM_FORMAT_LAST; i++) {
++	for (i = 0; i <= SNDRV_PCM_FORMAT_LAST; i++) {
+ 		if (dummy->pcm_hw.formats & (1ULL << i))
+ 			snd_iprintf(buffer, " %s", snd_pcm_format_name(i));
+ 	}
+diff --git a/sound/soc/qcom/apq8016_sbc.c b/sound/soc/qcom/apq8016_sbc.c
+index 886f2027e671..f2c71bcd06fa 100644
+--- a/sound/soc/qcom/apq8016_sbc.c
++++ b/sound/soc/qcom/apq8016_sbc.c
+@@ -112,7 +112,8 @@ static struct apq8016_sbc_data *apq8016_sbc_parse_of(struct snd_soc_card *card)
+ 		link->codec_of_node = of_parse_phandle(codec, "sound-dai", 0);
+ 		if (!link->codec_of_node) {
+ 			dev_err(card->dev, "error getting codec phandle\n");
+-			return ERR_PTR(-EINVAL);
++			ret = -EINVAL;
++			goto error;
+ 		}
+ 
+ 		ret = snd_soc_of_get_dai_name(cpu, &link->cpu_dai_name);
+diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
+index dbdea1975f90..81bedd9bb922 100644
+--- a/sound/soc/soc-pcm.c
++++ b/sound/soc/soc-pcm.c
+@@ -2026,42 +2026,81 @@ int dpcm_be_dai_trigger(struct snd_soc_pcm_runtime *fe, int stream,
+ }
+ EXPORT_SYMBOL_GPL(dpcm_be_dai_trigger);
+ 
++static int dpcm_dai_trigger_fe_be(struct snd_pcm_substream *substream,
++				  int cmd, bool fe_first)
++{
++	struct snd_soc_pcm_runtime *fe = substream->private_data;
++	int ret;
++
++	/* call trigger on the frontend before the backend. */
++	if (fe_first) {
++		dev_dbg(fe->dev, "ASoC: pre trigger FE %s cmd %d\n",
++			fe->dai_link->name, cmd);
++
++		ret = soc_pcm_trigger(substream, cmd);
++		if (ret < 0)
++			return ret;
++
++		ret = dpcm_be_dai_trigger(fe, substream->stream, cmd);
++		return ret;
++	}
++
++	/* call trigger on the frontend after the backend. */
++	ret = dpcm_be_dai_trigger(fe, substream->stream, cmd);
++	if (ret < 0)
++		return ret;
++
++	dev_dbg(fe->dev, "ASoC: post trigger FE %s cmd %d\n",
++		fe->dai_link->name, cmd);
++
++	ret = soc_pcm_trigger(substream, cmd);
++
++	return ret;
++}
++
+ static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd)
+ {
+ 	struct snd_soc_pcm_runtime *fe = substream->private_data;
+-	int stream = substream->stream, ret;
++	int stream = substream->stream;
++	int ret = 0;
+ 	enum snd_soc_dpcm_trigger trigger = fe->dai_link->trigger[stream];
+ 
+ 	fe->dpcm[stream].runtime_update = SND_SOC_DPCM_UPDATE_FE;
+ 
+ 	switch (trigger) {
+ 	case SND_SOC_DPCM_TRIGGER_PRE:
+-		/* call trigger on the frontend before the backend. */
+-
+-		dev_dbg(fe->dev, "ASoC: pre trigger FE %s cmd %d\n",
+-				fe->dai_link->name, cmd);
+-
+-		ret = soc_pcm_trigger(substream, cmd);
+-		if (ret < 0) {
+-			dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
+-			goto out;
++		switch (cmd) {
++		case SNDRV_PCM_TRIGGER_START:
++		case SNDRV_PCM_TRIGGER_RESUME:
++		case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
++			ret = dpcm_dai_trigger_fe_be(substream, cmd, true);
++			break;
++		case SNDRV_PCM_TRIGGER_STOP:
++		case SNDRV_PCM_TRIGGER_SUSPEND:
++		case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
++			ret = dpcm_dai_trigger_fe_be(substream, cmd, false);
++			break;
++		default:
++			ret = -EINVAL;
++			break;
+ 		}
+-
+-		ret = dpcm_be_dai_trigger(fe, substream->stream, cmd);
+ 		break;
+ 	case SND_SOC_DPCM_TRIGGER_POST:
+-		/* call trigger on the frontend after the backend. */
+-
+-		ret = dpcm_be_dai_trigger(fe, substream->stream, cmd);
+-		if (ret < 0) {
+-			dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
+-			goto out;
++		switch (cmd) {
++		case SNDRV_PCM_TRIGGER_START:
++		case SNDRV_PCM_TRIGGER_RESUME:
++		case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
++			ret = dpcm_dai_trigger_fe_be(substream, cmd, false);
++			break;
++		case SNDRV_PCM_TRIGGER_STOP:
++		case SNDRV_PCM_TRIGGER_SUSPEND:
++		case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
++			ret = dpcm_dai_trigger_fe_be(substream, cmd, true);
++			break;
++		default:
++			ret = -EINVAL;
++			break;
+ 		}
+-
+-		dev_dbg(fe->dev, "ASoC: post trigger FE %s cmd %d\n",
+-				fe->dai_link->name, cmd);
+-
+-		ret = soc_pcm_trigger(substream, cmd);
+ 		break;
+ 	case SND_SOC_DPCM_TRIGGER_BESPOKE:
+ 		/* bespoke trigger() - handles both FE and BEs */
+@@ -2070,10 +2109,6 @@ static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd)
+ 				fe->dai_link->name, cmd);
+ 
+ 		ret = soc_pcm_bespoke_trigger(substream, cmd);
+-		if (ret < 0) {
+-			dev_err(fe->dev,"ASoC: trigger FE failed %d\n", ret);
+-			goto out;
+-		}
+ 		break;
+ 	default:
+ 		dev_err(fe->dev, "ASoC: invalid trigger cmd %d for %s\n", cmd,
+@@ -2082,6 +2117,12 @@ static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd)
+ 		goto out;
+ 	}
+ 
++	if (ret < 0) {
++		dev_err(fe->dev, "ASoC: trigger FE cmd: %d failed: %d\n",
++			cmd, ret);
++		goto out;
++	}
++
+ 	switch (cmd) {
+ 	case SNDRV_PCM_TRIGGER_START:
+ 	case SNDRV_PCM_TRIGGER_RESUME: