Re: [PATCH] kvm: fix cpuid eax

[Avi Kivity]

On 04/30/2012 11:37 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.

First, I don't think we ever documented eax, so nothing can rely on it.
Second, this isn't guest visible, it's just part of
KVM_GET_SUPPORTED_CPUID (used by qemu's -cpu host, but doesn't affect
qemu stable cpus).

-- 
error compiling committee.c: too many arguments to function

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/