Re: [ANNOUNCE] kvm-51 release

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

Haydn Solomon wrote:
> First , thank you for new release of kvm. I have a few problems to
> report with kvm-51.
>
> 1. When running an exisiting winxp ACPI multiprocessor HAL with -smp
> 2, sometimes it will hang on boot.

This isn't new.  It isn't reported because few people run smp Windows,
as prior to FlexPriority/tpr-opt it was unbearably slow.

I'll look unto it.

> 2. This may not be a major problem but cpu usage is a litte higher
> when idle on release 51 than 50. It was very low on 50, the lowest
> I've seen in a long time.

It shouldn't have changed.  What do you see?  Can you provide a snapshot
of kvm_stat while Windows is idling (a few minutes after load)?

> 3. For me personally, the best performing release to date is release 50.

kvm-51 shouldn't be all that different; it's mostly AMD stability
improvements and the FlexPriority smp fix.

>
> Regards
>
> Haydn
>
> Avi Kivity wrote:
>> If you're having trouble on AMD systems, please try this out.
>>
>> Changes from kvm-50:
>> - fix some x86 emulator one-byte insns (fixes W2K3 installer again)
>> - fix host hangs with NMI watchdog on AMD
>> - fix guest SMP on AMD
>> - fix dirty page tracking when clearing a guest page (Dor Laor)
>> - more portability work (Hollis Blanchard, Jerone Young)
>> - fix FlexPriority with guest smp (Sheng Yang)
>> - improve rpm specfile (Akio Takebe, me)
>> - fix external module vs portability work (Andrea Arcangeli)
>> - remove elpin bios due to license violation
>> - testsuite shutdown pio port
>> - don't advertise svm on the guest
>> - fix reset with kernel apic (Markus Rechberger)
>>
>>
>> Notes:
>>       If you use the modules bundled with kvm-51, you can use any version
>> of Linux from 2.6.9 upwards.
>>       If you use the modules bundled with Linux 2.6.20, you need to use
>> kvm-12.
>>       If you use the modules bundled with Linux 2.6.21, you need to use
>> kvm-17.
>>       Modules from Linux 2.6.22 and up will work with any kvm version from
>> kvm-22.  Some features may only be available in newer releases.
>>       For best performance, use Linux 2.6.23-rc2 or later as the host.
>>
>> http://kvm.qumranet.com
>>
>>
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> adfdf


-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.


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