On Mon, Jun 22, 2020 at 11:53:48PM -0700, Sean Christopherson wrote:
> If we do get agressive and zap all children (or if my analysis is wrong),
> and prevent the mixed level insansity, then a simpler approach would be to
> skip the lookup if the MMU is direct. I.e. no need for the per-VM toggle.
On Tue, May 12, 2020 at 03:36:21PM -0700, Peter Feiner wrote:
> On Fri, May 8, 2020 at 1:14 PM Sean Christopherson
> wrote:
> >
> > On Fri, May 08, 2020 at 11:24:25AM -0700, Jon Cargille wrote:
> > > From: Peter Feiner
> > >
> > > Optimization for avoiding lookups in mmu_page_hash. When there's a
On Fri, May 8, 2020 at 1:14 PM Sean Christopherson
wrote:
>
> On Fri, May 08, 2020 at 11:24:25AM -0700, Jon Cargille wrote:
> > From: Peter Feiner
> >
> > Optimization for avoiding lookups in mmu_page_hash. When there's a
> > single direct root, a shadow page has at most one parent SPTE
> > (non-
On Fri, May 08, 2020 at 11:24:25AM -0700, Jon Cargille wrote:
> From: Peter Feiner
>
> Optimization for avoiding lookups in mmu_page_hash. When there's a
> single direct root, a shadow page has at most one parent SPTE
> (non-root SPs have exactly one; the root has none). Thus, if an SPTE
> is non
From: Peter Feiner
Optimization for avoiding lookups in mmu_page_hash. When there's a
single direct root, a shadow page has at most one parent SPTE
(non-root SPs have exactly one; the root has none). Thus, if an SPTE
is non-present, it can be linked to a newly allocated SP without
first checking
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