Re: [PATCH] kvm: fix cpuid eax

From: H. Peter Anvin
Date: Mon Apr 30 2012 - 16:40:48 EST


On 04/30/2012 01:37 PM, Anthony Liguori wrote:
> On 04/30/2012 09:39 AM, Michael S. Tsirkin wrote:
>> cpuid eax should return the max leaf so that
>> guests can find out the valid range.
>> This matches Xen et al.
>
> What KVM does here predates Xen and Hyper-V.
>
> This is an ABI breaker.
>

What Intel and AMD have done here predates KVM...

What exactly relies on a zero here?

-hpa

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