Re: [patch 0/3] synchronized TSC between vcpu's on SMP guests

Marcelo Tosatti
2008-12-09T13:50:02Z

On Tue, Dec 09, 2008 at 02:38:08PM +0300, Michael Tokarev wrote:
> Marcelo Tosatti wrote:
> > Most Intel hosts are supposed to have their TSC's synchronized. This
> > patchset attempts to fix the sites which overwrite the TSC making them
> > appear unsynchronized to the guest.
>
> By the way, phenoms are also supposed to have synced TSCs, at least
> the host reports TSC syncronization works. But guests still thinks
> TSC is unstable, even on uniprocessor guests using kvm_clock...

On uniprocessor guests? Perhaps, if the guest uses the vmmouse for
example. In such case, is the TSC reported unstable right after boot?

> Is it related to the area you're patching?
>
> Thanks!
>
> /mjt
>
> --
> To unsubscribe from this list: send the line "unsubscribe kvm" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html