[RFC PATCH 06/17] KVM: arm64: Implement break-before-make sequence for parallel walks

Oliver Upton oupton at google.com
Mon Apr 25 09:53:20 PDT 2022


On Mon, Apr 25, 2022 at 8:13 AM Sean Christopherson <seanjc at google.com> wrote:
>
> On Fri, Apr 15, 2022, Oliver Upton wrote:
> > The ARM architecture requires that software use the 'break-before-make'
> > sequence whenever memory is being remapped.
>
> What does "remapped" mean here?  Changing the pfn?  Promoting/demoting to/from a
> huge page?

Both, but in the case of this series it is mostly concerned with
promotion/demotion. I'll make this language a bit more precise next
time around.

--
Thanks,
Oliver



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