Re: Houston, we have May 15, 1953 (says guest when host uses cpufreq, and dies)

Tomasz Chmielewski
2009-02-19T09:20:34Z

Gerd Hoffmann schrieb:
> Anthony Liguori wrote:
>> Are you suggesting that one should use cpufreq on a CPU without a
>> constant tsc? Isn't this just asking for trouble?
>
> Depends on the (guest) clock source ;)
>
> tsc isn't going to do well obviously.
>
> kvmclock is designed to handle tsc frequency changes just fine.
> And with the kvm-84 kernel module it actually works correctly.

So with Linux virtio guests I may have luck, but not so with Windows,
which can't (yet?) use kvm-clock. Correct?
(it may be some time before I'm able to upgrade and check how it really
works).