Re: [RFT] kvm with Windows optimization

Avi Kivity
2007-10-25T18:03:18Z

Anthony Liguori wrote:
> Avi Kivity wrote:
>> This is a request for testing of an experimental kvm feature that
>> dramatically accelerates some Windows releases (when running with the
>> ACPI HAL, and especially with guest SMP). The feature detects
>> accesses by the guest to the Task Priority Register (TPR) and patches
>> them at runtime to a kvm-friendly code snipped that is provided by
>> the BIOS.
>>
>> The upshot of all that is that
>> http://kvm.qumranet.com/kvmwiki/Windows_ACPI_Workaround is no longer
>> required, and Windows SMP no longer runs like a dog; it's quite
>> snappy from my very limited testing.
>>
>> Please download the test release from
>> http://people.qumranet.com/avi/tpr-opt-1.tar.gz and give it a spin.
>> Once it has received some exposure, I'll merge it into mainline.
>>
>> Credit for the original idea is due to Ben Serebrin.
>>
>>
>
> Sweet!
>
> I needed the following patch to compile. Will let you know how
> testing goes.
>

I already applied that, plus another minor fix, so I recommend
re-downloading. Should have given it a new name.

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