Re: [PATCH] x86/cpuid: expose AVX512_4VNNIW and AVX512_4FMAPS features to kvm guest

[Borislav Petkov]

On Fri, Oct 28, 2016 at 02:07:21PM +0200, Paolo Bonzini wrote:
> cpuid_count_edx would be just
> 
> static inline unsigned int cpuid_count_edx(unsigned op, unsigned count)
> {
>         unsigned int eax, ebx, ecx, edx;
> 
>         cpuid_count(op, count, &eax, &ebx, &ecx, &edx);
> 
>         return edx;
> }

Even better.

But shouldn't this be hiding unimplemented CPUID bits from the guest?

-- 
Regards/Gruss,
    Boris.

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