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

Gerd Hoffmann
2009-02-19T09:15:30Z

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.

HTH,
Gerd