From: Paolo Bonzini <pbonzini@redhat.com>
Date: Wed, 13 Nov 2024 11:31:54 +0000 (-0500)
Subject: Merge tag 'kvm-x86-mmu-6.13' of https://github.com/kvm-x86/linux into HEAD
X-Git-Tag: v6.13-rc1~13^2~16
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=c59de1413391868057cfe70b45dbce66de643064;p=linux-block.git

Merge tag 'kvm-x86-mmu-6.13' of https://github.com/kvm-x86/linux into HEAD

KVM x86 MMU changes for 6.13

 - Cleanup KVM's handling of Accessed and Dirty bits to dedup code, improve
   documentation, harden against unexpected changes, and to simplify
   A/D-disabled MMUs by using the hardware-defined A/D bits to track if a
   PFN is Accessed and/or Dirty.

 - Elide TLB flushes when aging SPTEs, as has been done in x86's primary
   MMU for over 10 years.

 - Batch TLB flushes when zapping collapsible TDP MMU SPTEs, i.e. when
   dirty logging is toggled off, which reduces the time it takes to disable
   dirty logging by ~3x.

 - Recover huge pages in-place in the TDP MMU instead of zapping the SP
   and waiting until the page is re-accessed to create a huge mapping.
   Proactively installing huge pages can reduce vCPU jitter in extreme
   scenarios.

 - Remove support for (poorly) reclaiming page tables in shadow MMUs via
   the primary MMU's shrinker interface.
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c59de1413391868057cfe70b45dbce66de643064