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-----BEGIN PGP SIGNED MESSAGE----- |
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Hash: SHA1 |
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Chris Ong wrote: |
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> Hi Friends, |
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> I am having a machine with 2 x Xeon 2.8Ghz w/HT/EM64T. |
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> |
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> I am using the minimal-amd64 iso to boot up and install the |
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> machine and it's a sucess. |
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> |
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> But there's a doubt here.. |
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> |
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> During the installation stage, the kernel provided with the |
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> Minimal CD will actually tell 4 CPU. Correct as Real CPU + HT CPU. |
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> But when I booted the machine with my own kernel. It shows only 2. |
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> Here's the extraction of config.gz |
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> |
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> # Processor type and features |
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> # |
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> # CONFIG_MK8 is not set |
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> CONFIG_MPSC=y |
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> # CONFIG_GENERIC_CPU is not set |
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> CONFIG_X86_L1_CACHE_BYTES=128 |
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> CONFIG_X86_L1_CACHE_SHIFT=7 |
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> CONFIG_X86_TSC=y |
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> CONFIG_X86_GOOD_APIC=y |
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> # CONFIG_MICROCODE is not set |
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> # CONFIG_X86_MSR is not set |
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> # CONFIG_X86_CPUID is not set |
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> CONFIG_X86_HT=y |
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> CONFIG_X86_IO_APIC=y |
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> CONFIG_X86_LOCAL_APIC=y |
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> CONFIG_MTRR=y |
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> CONFIG_SMP=y |
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> CONFIG_PREEMPT=y |
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> CONFIG_PREEMPT_BKL=y |
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> CONFIG_SCHED_SMT=y |
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> # CONFIG_K8_NUMA is not set |
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> # CONFIG_NUMA_EMU is not set |
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> # CONFIG_NUMA is not set |
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> CONFIG_HAVE_DEC_LOCK=y |
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> CONFIG_NR_CPUS=4 |
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> CONFIG_HPET_TIMER=y |
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> # CONFIG_HPET_EMULATE_RTC is not set |
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> # CONFIG_GART_IOMMU is not set |
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> CONFIG_DUMMY_IOMMU=y |
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> CONFIG_X86_MCE=y |
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> CONFIG_X86_MCE_INTEL=y |
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> CONFIG_SECCOMP=y |
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> CONFIG_GENERIC_HARDIRQS=y |
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> CONFIG_GENERIC_IRQ_PROBE=y |
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> CONFIG_ISA_DMA_API=y |
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> |
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> I have the same problem before when I try to compile |
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> kernel-2.6.12.5 in FC4 with a P4 3.0 w/HT. I also lost the virtual CPU. |
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> |
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> Did the kernel-2.6.12.5 treat HT CPU differently ? |
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> |
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> I hope I can find the answer in the kernel changelog. But it's |
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> quite impossible for me right now. Any ideas ? |
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> |
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> --- |
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> Regards, |
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> C. K. Ong (Chris) |
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> Linux System Engineer |
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> RHCT Cert No: 603004347692007 |
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> http://www.redhat.com/rhce/rhce603004347692007.html |
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> |
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> My Directory Sdn. Bhd. |
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> Your Open Source Partner. |
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> http://www.md.com.my http://www.net.my |
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> 2005 |
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> |
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I'm running a P4 3.0GHz w/ HT and it works fine for me. Here's what |
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is in my config, that's not in yours: |
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|
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CONFIG_X86_PC=y |
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CONFIG_MPENTIUM4=y |
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CONFIG_X86_GENERIC=y |
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CONFIG_X86_CMPXCHG=y |
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CONFIG_X86_XADD=y |
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CONFIG_RWSEM_XCHGADD_ALGORITHM=y |
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CONFIG_GENERIC_CALIBRATE_DELAY=y |
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CONFIG_X86_WP_WORKS_OK=y |
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CONFIG_X86_INVLPG=y |
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CONFIG_X86_BSWAP=y |
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CONFIG_X86_POPAD_OK=y |
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CONFIG_X86_INTEL_USERCOPY=y |
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CONFIG_X86_USE_PPRO_CHECKSUM=y |
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CONFIG_HPET_EMULATE_RTC=y |
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CONFIG_NR_CPUS=8 |
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CONFIG_X86_MCE_NONFATAL=y |
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CONFIG_X86_MCE_P4THERMAL=y |
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CONFIG_MICROCODE=m |
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CONFIG_X86_MSR=m |
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CONFIG_X86_CPUID=m |
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|
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None of that seems like it would would make a difference, except |
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perhaps the processor identification. If you don't tell the kernel |
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what type of processor it's using (i.e. by just leaving it generic) it |
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won't know to enable hyperthreading..... |
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|
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HTH |
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|
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- -- |
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gentux |
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echo "hfouvyAdpy/ofu" | perl -pe 's/(.)/chr(ord($1)-1)/ge' |
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|
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gentux's gpg fingerprint ==> 34CE 2E97 40C7 EF6E EC40 9795 2D81 924A |
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6996 0993 |
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-----BEGIN PGP SIGNATURE----- |
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Version: GnuPG v1.4.1 (GNU/Linux) |
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iD8DBQFDRVAWLYGSSmmWCZMRAkMNAJ4kqHMKAV5CToOOlrtelwauf96uNwCeJ8jO |
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WyGGXrJh9iI+U8+1MKz3Na8= |
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=OLZ/ |
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-----END PGP SIGNATURE----- |
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|
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-- |
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