Gentoo Archives: gentoo-user

From: Daniel Troeder <daniel@×××××××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] kvm and intel E5450 processor
Date: Thu, 24 Sep 2009 16:16:02
Message-Id: 1253808950.934.5.camel@maya.local
In Reply to: [gentoo-user] kvm and intel E5450 processor by James Erickson
1 On Wed, 2009-09-23 at 22:17 -0500, James Erickson wrote:
2 > today i installed two quad core Intel Xeon E5450's (Harpertown). i
3 > notice in /proc/cpuinfo i no longer have a vmx flag as i had with my
4 > previous Intel E5405's. i have also noticed that my /dev/kvm device is
5 > no longer created. VT is enabled in the bios. the data for the E5450's
6 > states that they have Intel Virtualization Technology. so why dont i
7 > have a /dev/kvm? have i spent all that money on processors that can't
8 > use kvm? can anyone shed some light on this issue for me? i am
9 > confused.
10 >
11 > James Erickson
12 >
13 >
14 > ______________________________________________________________________
15 > Microsoft brings you a new way to search the web. Try Bing™ now
16 hmm??
17
18 Wikipedia says you have VT:
19 http://en.wikipedia.org/wiki/List_of_Intel_Xeon_microprocessors#.22Harpertown.22_.28standard-voltage.2C_45_nm.29
20
21 In case this is because of modules problem:
22
23 You have to en/dis/able:
24 CONFIG_HAVE_KVM=y
25 CONFIG_HAVE_KVM_IRQCHIP=y
26 CONFIG_KVM=m
27 # CONFIG_KVM_INTEL is not set
28 # CONFIG_KVM_AMD is not set
29 # CONFIG_KVM_TRACE is not set
30
31 (Possibly reboot if compile is in wrong directory, or
32 check /usr/src/linux points to correct version.)
33
34 Then you emerge:
35 app-emulation/kvm-kmod (and app-emulation/kvm :)
36
37 It is now necessary to have CONFIG_KVM=m and the CPU-specifics OFF and
38 use the modules from app-emulation/kvm-kmod.
39
40 That results in:
41 /lib/modules/2.6.30-tuxonice-r5.mayo.nofb/kernel/arch/x86/kvm
42 /lib/modules/2.6.30-tuxonice-r5.mayo.nofb/kernel/arch/x86/kvm/kvm.ko
43 /lib/modules/2.6.30-tuxonice-r5.mayo.nofb/kvm
44 /lib/modules/2.6.30-tuxonice-r5.mayo.nofb/kvm/kvm.ko
45 /lib/modules/2.6.30-tuxonice-r5.mayo.nofb/kvm/kvm-intel.ko
46 /lib/modules/2.6.30-tuxonice-r5.mayo.nofb/kvm/kvm-amd.ko
47
48 Which seems strange, but works :)
49 (You load kvm-intel.ko which loads the correct kvm.ko)
50
51
52 Bye,
53 Daniel
54
55 --
56 PGP key @ http://pgpkeys.pca.dfn.de/pks/lookup?search=0xBB9D4887&op=get
57 # gpg --recv-keys --keyserver hkp://subkeys.pgp.net 0xBB9D4887

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