...@vger.kernel.org; linuxppc-
d...@lists.ozlabs.org
Subject: Re: [PATCH v3] KVM: PPC: e500mc: Enhance tlb invalidation
condition on vcpu schedule
On Tue, 2014-06-17 at 14:42 -0500, Caraman Mihai Claudiu-B02008
wrote:
-static DEFINE_PER_CPU(struct kvm_vcpu *, last_vcpu_on_cpu);
+static DEFINE_PER_CPU(struct
diu-B02008
> > > Cc: kvm-...@vger.kernel.org; k...@vger.kernel.org; linuxppc-
> > > d...@lists.ozlabs.org
> > > Subject: Re: [PATCH v3] KVM: PPC: e500mc: Enhance tlb invalidation
> > > condition on vcpu schedule
> > >
> > > On Tue, 2014-06-17 at 1
er.kernel.org; linuxppc-
> > d...@lists.ozlabs.org
> > Subject: Re: [PATCH v3] KVM: PPC: e500mc: Enhance tlb invalidation
> > condition on vcpu schedule
> >
> > On Tue, 2014-06-17 at 14:42 -0500, Caraman Mihai Claudiu-B02008 wrote:
> > > > > -static DEFINE_PER_CPU(st
> -Original Message-
> From: Wood Scott-B07421
> Sent: Tuesday, June 17, 2014 10:48 PM
> To: Caraman Mihai Claudiu-B02008
> Cc: kvm-...@vger.kernel.org; k...@vger.kernel.org; linuxppc-
> d...@lists.ozlabs.org
> Subject: Re: [PATCH v3] KVM: PPC: e500mc: Enhance tlb inv
On Tue, 2014-06-17 at 14:42 -0500, Caraman Mihai Claudiu-B02008 wrote:
> > > -static DEFINE_PER_CPU(struct kvm_vcpu *, last_vcpu_on_cpu);
> > > +static DEFINE_PER_CPU(struct kvm_vcpu * [KVMPPC_NR_LPIDS],
> > last_vcpu_on_cpu);
> >
> > Hmm, I didn't know you could express types like that. Is this
> > -static DEFINE_PER_CPU(struct kvm_vcpu *, last_vcpu_on_cpu);
> > +static DEFINE_PER_CPU(struct kvm_vcpu * [KVMPPC_NR_LPIDS],
> last_vcpu_on_cpu);
>
> Hmm, I didn't know you could express types like that. Is this special
> syntax that only works for typeof?
Yes, AFAIK.
> No space after *
Ch
On Tue, 2014-06-17 at 22:09 +0300, Mihai Caraman wrote:
> On vcpu schedule, the condition checked for tlb pollution is too loose.
> The tlb entries of a vcpu become polluted (vs stale) only when a different
> vcpu within the same logical partition runs in-between. Optimize the tlb
> invalidation co
On vcpu schedule, the condition checked for tlb pollution is too loose.
The tlb entries of a vcpu become polluted (vs stale) only when a different
vcpu within the same logical partition runs in-between. Optimize the tlb
invalidation condition keeping last_vcpu_on_cpu per logical partition id.
With
