Re: [RFT] kvm with Windows optimization

Avi Kivity
2007-10-26T10:02:45Z

Gildas wrote:
> 2007/10/25, Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>:
>
>> 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.
>>
>> --
>> error compiling committee.c: too many arguments to function
>>
>
> Hi Avi,
>
> On an intel machine running 64 bits ubuntu with kernel 2.6.20, using
> the archive downloaded this morning at 10 o'clock GMT with the
> following md5sum:
>
>

Right, installs seem not to like this release, but running an existing
VM seems to work fine (mostly).

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