Re: 2.6.23.1-rt4 and kvm 48

[Jan Kiszka <jan.kiszka-kv7WeFo6aLtBDgjK7y7TUQ@public.gmane.org>]

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.

> I hope that Intel will add similar traps in future 
> iterations of VT.

Yep.

Jan

-- 
Siemens AG, Corporate Technology, CT SE 2
Corporate Competence Center Embedded Linux

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