Re: KVM and Prempt?

Back, Michael (ext)
2007-10-22T11:37:01Z

> -----Ursprüngliche Nachricht-----
> Von: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
> [mailto:kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org] Im Auftrag
> von Avi Kivity
> Gesendet: Monday, October 22, 2007 9:40 AM
> An: Back, Michael (ext)
> Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
> Betreff: Re: [kvm-devel] KVM and Prempt?
>
> Back, Michael (ext) wrote:
> >> -----Ursprüngliche Nachricht-----
> >> Von: Gregory Haskins [mailto:ghaskins-Et1tbQHTxzrQT0dZR+AlfA@public.gmane.org]
> >> Gesendet: Friday, October 19, 2007 5:27 PM
> >> An: Back, Michael (ext)
> >> Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
> >> Betreff: Re: AW: [kvm-devel] KVM and Prempt?
> >>
> >> On Fri, 2007-10-19 at 16:17 +0200, Back, Michael (ext) wrote:
> >>
> >>
> >>>> Are you referring to the -rt patch?
> >>>>
> >>> Yes, I take the patch from
> >>> http://www.kernel.org/pub/linux/kernel/projects/rt/
> >>>
> >>>
> >> Ah, yes. There were problems in the past with running KVM on
> >> -rt if you
> >> have the full kit enabled. Its possible they are still not fixed.
> >>
> >> I had patches to address this issue for an older KVM and
> had it up and
> >> running on a full PREEMPT_RT kernel, but they have become
> >> quite stale at
> >> this point. I will be picking up this work again sometime
> in the near
> >> future, so watch this space.
> >>
> >> Are you building KVM as a module from the -rt tree, or as
> an external
> >> module?
> >>
> >
> > I use a external module, last try was kvm-46!
> >
> >
>
> Make sure CONFIG_PREEMPT_NOTIFIER is selected in your .config. You'll
> have to adjust Kconfig or select the in-tree kvm for that.

Is there a possibility to check, if CONFIG_PREEMPT_NOTIFIER correct selected and compiled in the kernel/modules?