Re: Test for the feature RE: [RFT] kvm with Windows optimization

Avi Kivity
2007-10-30T04:27:55Z

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Anthony Liguori wrote:
> Avi Kivity wrote:
>
>> Zhao, Yunfeng wrote:
>>
>>
>>> I didn't some tests against the release.
>>> Basically, it works well, and no any new regressions has been introduced.
>>> The booting speed of windows is also much faster.
>>>
>>> But I still failed to boot 64bit smp XP and 2k3.
>>> And after run a series of tests, I found a defunct qemu process.
>>> ############################################################
>>> [root@vt-dp8 ~]# ps aux|grep qemu
>>> root 12645 0.0 0.0 60284 720 pts/7 S+ 22:30 0:00 grep qemu
>>> root 20656 0.3 0.0 0 0 ? Zl 20:37 0:20 [qemu-system-x86] <defunct>
>>> ############################################################
>>> I checked the log, it happened when creating 64bit vista.
>>> If run the test case separately, the issue will not happen.
>>>
>>>
>>>
>>>
>> A bug was fixed in mainline for this issue, so it is not related to the
>> optimization. I still need to make sure it doesn't harm 64-bit Windows.
>>
>>
>
> Does 64-bit Windows ever access the TPR through MMIO? Wouldn't it just
> use cr8?
>

It always uses cr8. However my slash'n'burn did touch something
cr8-related, so I can't be sure 64-bit Windows isn't affected.

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

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