Re: ABAT Testing report, kernel 3415130f97.., userspace 5b16d32e..

[Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>]

Zhao, Yunfeng wrote:
>>> This happens here too, with kvm versions as far back as kvm-20.  But
>>> with a clean install of Windows XP, it starts in about a minute
>>>       
> (under
>   
>>> the ACPI HAL) and idles using a few percent host cpu.  Looks like
>>>       
> some
>   
>>> Windows update causes this, not a kvm regression.
>>>
>>>
>>>       
>> It's not a Windows update.  A new Windows install works well, as it
>>     
> will
>   
>> after all updates.  If you boot it in an smp configuration, however, it
>> will update its kernel, and the new kernel will exhibit the problem,
>> even if booted later with a single vcpu.
>>     
> [Yunfeng] In my case, the guest was installed with 2 vcpus, and then the
> disk image works as a back file of qcow imgs. T
> he smp windows test cases will boot the qcow img with 2vcpus.
> My experience is that the installation speed of windows guest
> (installing from iso file) is also slow.
>  
>   

I ran the same image under qemu 0.9.0, uniprocessor, and got the same 
results: high host cpu usage while the guest is idle.  Most likely the 
BIOS ACPI tables are misconfigured and the Windows idle loop is confused.

Do Xen SMP ACPI guests exhibit the same issues?  If not, they have 
probably fixed this issue in their bios.


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


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