Re: [PATCH 0/2] KVM: x86/mmu: Use LOCK CMPXCHG to clear Accessed bits

[Huang, Kai]

On Mon, 2026-07-27 at 17:22 -0700, Sean Christopherson wrote:
> I initially was planning on tweaking the FROZEN_SPTE value to make it ok to
> use LOCK AND on Accessed bits, but AFAICT there's no meaningful downside to
> using CMPXCHG.

Maybe do both, e.g., still remove the A-bit from FROZEN_SPTE?  AFAICT there's no
good reason to keep the A-bit in FROZEN_SPTE.