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