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SubjectRe: [kvm-devel] 2.6.23.1-rt4 and kvm 48
Jan Kiszka wrote:
> Avi Kivity wrote:
>
>> Jan Kiszka wrote:
>>
>>> Interesting result - you've read about the wbinvd issues? Is there no
>>> wbinvd in the bios shipped with older kvm? Which VM extension did you
>>> test, both Intel and AMD? I would bet that your X issues are due to the
>>> same effect. X startup/shutdown involves a lot of wbinvd calls on my
>>> test boxes.
>>>
>>>
>>>
>> kvm.git now traps invd and wbinvd on amd, so there shouldn't be any
>> issues there.
>>
>
> So kvm can then simply ignore the instructions, or what does it do about
> them? I recall some replies in the related thread that some more work
> may be required.
>
>

It currently ignores the instructions. When device passthrough is
implemented more work will be needed.


--
Any sufficiently difficult bug is indistinguishable from a feature.

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