Re: Panic when loading kvm-amd.ko

[Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>]

Michael Hanselmann wrote:
> Hello
>
> When loading kvm-amd.ko on an HP DL-145 G5 with one AMD Opteron 2216 HE
> (2 cores, 2.4 GHz), I get a kernel panic. I tried to find the exact
> cause but was unable to do so. It doesn't crash when I add a "return"
> before "wrmsrl(MSR_EFER, efer | MSR_EFER_SVME_MASK);" in
> svm_hardware_enable. The backtrace always originates from different
> functions, but ends up in interrupt handling every time. This isn't a
> regression because it has been happening since at least
> 2.6.20.something, but I never bothered to look into it. If you need any
> more info, please let me know.
>
> I reproduced it with vanilla-2.6.21.5, vanilla-2.6.22-rc5 and current
> KVM git. Architecture is x86_64. GCC version is "gcc (GCC) 3.4.6 (Gentoo
> Hardened 3.4.6-r2, ssp-3.4.6-1.0, pie-8.7.10)".
>   

This looks remarkably similar to 
http://thread.gmane.org/gmane.comp.emulators.kvm.devel/3399.  The 
conclusion was

> I went through my BIOS settings and found:
> "Advanced BIOS Features" -> "CPU Feature" -> Virtualization
>
> However this was already set to "Enabled". I tried changing the value 
> to "Disabled" and now KVM works fine. Stupid ABIT...

I suggest trying the same, as well as a bios upgrade.

-- 
error compiling committee.c: too many arguments to function


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