[PATCH] KVM: PPC: e500mc: Relax tlb invalidation condition on vcpu schedule

[mihai.caraman at freescale.com]

> -----Original Message-----
> From: Alexander Graf [mailto:agraf at suse.de]
> Sent: Thursday, June 12, 2014 8:05 PM
> To: Caraman Mihai Claudiu-B02008
> Cc: kvm-ppc at vger.kernel.org; kvm at vger.kernel.org; linuxppc-
> dev at lists.ozlabs.org; Wood Scott-B07421
> Subject: Re: [PATCH] KVM: PPC: e500mc: Relax tlb invalidation condition
> on vcpu schedule
> 
> On 06/12/2014 04:00 PM, Mihai Caraman wrote:
> > On vcpu schedule, the condition checked for tlb pollution is too tight.
> > The tlb entries of one vcpu are polluted when a different vcpu from the
> > same partition runs in-between. Relax the current tlb invalidation
> > condition taking into account the lpid.
> >
> > Signed-off-by: Mihai Caraman <mihai.caraman <at> freescale.com>
> 
> Your mailer is broken? :)
> This really should be an @.
> 
> I think this should work. Scott, please ack.

Alex, you were right. I screwed up the patch description by inverting relax
and tight terms :) It should have been more like this:

KVM: PPC: e500mc: Enhance tlb invalidation condition on vcpu schedule

On vcpu schedule, the condition checked for tlb pollution is too loose.
The tlb entries of a vcpu are polluted (vs stale) only when a different vcpu
within the same logical partition runs in-between. Optimize the tlb invalidation
condition taking into account the lpid.

-Mike