Re: [PATCH RFC 0/2] kvm: Improving directed yield in PLE handler

[Raghavendra K T]

On 07/11/2012 05:21 PM, Raghavendra K T wrote:
> On 07/11/2012 03:47 PM, Christian Borntraeger wrote:
> > On 11/07/12 11:06, Avi Kivity wrote:
[...]
> > > > So there is no win here, but there are other cases were diag44 is
> > > > used, e.g. cpu_relax.
> > > > I have to double check with others, if these cases are critical, but
> > > > for now, it seems
> > > > that your dummy implementation for s390 is just fine. After all it
> > > > is a no-op until
> > > > we implement something.
> > >
> > > Does the data structure make sense for you? If so we can move it to
> > > common code (and manage it in kvm_vcpu_on_spin()). We can guard it with
> > > CONFIG_KVM_HAVE_CPU_RELAX_INTERCEPT or something, so other archs don't
> > > have to pay anything.
> >
> > Ignoring the name, yes the data structure itself seems based on the
> > algorithm
> > and not on arch specific things. That should work.
>
> Ok. can you please elaborate, on the flow.

Ok got it..  Will check how the code can be common to both x86 and s390.

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