Re: [PATCH 2/2] cpu: intel, amd: mask cleared cpuid features

[Vladimir Davydov]

On 07/25/2012 04:57 AM, H. Peter Anvin wrote:
> On 07/24/2012 04:09 AM, Vladimir Davydov wrote:
> > We have not encountered this situation in our environments and I hope we
> > won't :-)
> >
> > But look, these CPUID functions cover majority of CPU features, don't
> > they? So, most of "normal" apps inside VM will survive migration.
> > Perhaps, some low-level utils won't. I guess that's why there are no
> > MSRs for other levels provided by vendors.
> You will once Ivy Bridge becomes common.

Ivy Bridge has CPUID faulting, which allows masking all CPUID 
levels/functions.

> 	-hpa

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