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

From: Vladimir Davydov
Date: Wed Jul 25 2012 - 07:49:30 EST


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.

-hpa


You're right here. We will try to find other ways for sorting the migration problem out.

Thank you for your time and feedback.
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