Re: [PATCH] KVM: PPC: Book3S PR: Use SLB entry 0

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On Thu, May 15, 2014 at 02:43:51PM +0200, Alexander Graf wrote:
> We didn't make use of SLB entry 0 because ... of no good reason. SLB entry 0
> will always be used by the Linux linear SLB entry, so the fact that slbia
> does not invalidate it doesn't matter as we overwrite SLB 0 on exit anyway.
> 
> Just enable use of SLB entry 0 for our shadow SLB code.

I think that this is a good idea, but to be sure of invalidating all
ERAT entries you should write zeroes to SLB entry 0 before the slbia
on guest exit.

Paul.
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