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    DateWed, 20 Feb 2008 16:07:03 +0200
    FromAvi Kivity <>
    SubjectRe: [kvm-devel] build #365 issue for v2.6.25-rc2-342-g5d9c4a7 in ./arch/x86/kvm/kvm.ko
    Avi Kivity wrote:
    > Toralf Förster wrote:
    >> Hello,
    >>
    >> the build with the attached .config failed, make ends with:
    >> ...
    >>   HOSTCC  arch/x86/boot/tools/build
    >>   BUILD   arch/x86/boot/bzImage
    >> Root device is (3, 8)
    >> Setup is 12280 bytes (padded to 12288 bytes).
    >> System is 2192 kB
    >> Kernel: arch/x86/boot/bzImage is ready  (#1)
    >>   Building modules, stage 2.
    >>   MODPOST 211 modules
    >> ERROR: "smp_ops" [arch/x86/kvm/kvm.ko] undefined!
    >> make[1]: *** [__modpost] Error 1
    >> make: *** [modules] Error 2
    >>
    >>
    >> The build was made with :
    >> $> make mrproper && make rndconfig && <tweak config file> && make 
    >> oldconfig && make
    >>
    >> Here's the config:
    >> 
    >
    > Looks like KVM conflicts with CONFIG_VOYAGER...
    >
    
    Attached patch should fix.
    
    Subject: x86: disable KVM on Voyager
    
    Most classic Pentiums don't have hardware virtualization
    extension, and building kvm with voyager generates
    spurious failures.
    
    Signed-off-by: Avi Kivity <avi@qumranet.com>
    
    -- 
    Any sufficiently difficult bug is indistinguishable from a feature.
    
    diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
    index cc2bc37..e27962c 100644
    --- a/arch/x86/Kconfig
    +++ b/arch/x86/Kconfig
    @@ -21,7 +21,7 @@ config X86
     	select HAVE_IDE
     	select HAVE_OPROFILE
     	select HAVE_KPROBES
    -	select HAVE_KVM
    +	select HAVE_KVM if ((X86_32 && !X86_VOYAGER) || X86_64)
     
     
     config GENERIC_LOCKBREAK
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