Re: [RFC -v4 PATCH 3/3] kvm: use yield_to instead of sleep in kvm_vcpu_on_spin

[Rik van Riel]

On 01/13/2011 10:23 AM, Avi Kivity wrote:
> On 01/13/2011 05:06 PM, Rik van Riel wrote:
> > > I think the first patch needs some reference counting... I'd move it to
> > > the outermost KVM_RUN loop to reduce the performance impact.
> >
> > I don't see how refcounting from that other thread could
> > possibly help, and I now see that the task_struct_cachep
> > does not have SLAB_DESTROY_BY_LRU, either :(
> >
> > What do you have in mind here that would both work and
> > be acceptable to you as KVM maintainer?
>
> I think a 'struct pid' fits the bill here.

Indeed it does.   New patches on the way later, after I have
tested them some more.

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