[GIT,PULL] KVM: x86: MMU changes for 6.10

Pull-request

https://github.com/kvm-x86/linux.git tags/kvm-x86-mmu-6.10

Message

Sean Christopherson May 10, 2024, 11:50 p.m. UTC

Tag says it all, though I feel the urge to have _something_ here.

The following changes since commit fec50db7033ea478773b159e0e2efb135270e3b7:

  Linux 6.9-rc3 (2024-04-07 13:22:46 -0700)

are available in the Git repository at:

  https://github.com/kvm-x86/linux.git tags/kvm-x86-mmu-6.10

for you to fetch changes up to 226d9b8f16883ca412ef8efbad6f3594587a8dab:

  KVM: x86/mmu: Fix a largely theoretical race in kvm_mmu_track_write() (2024-05-02 07:49:06 -0700)

----------------------------------------------------------------
KVM x86 MMU changes for 6.10:

 - Process TDP MMU SPTEs that are are zapped while holding mmu_lock for read
   after replacing REMOVED_SPTE with '0' and flushing remote TLBs, which allows
   vCPU tasks to repopulate the zapped region while the zapper finishes tearing
   down the old, defunct page tables.

 - Fix a longstanding, likely benign-in-practice race where KVM could fail to
   detect a write from kvm_mmu_track_write() to a shadowed GPTE if the GPTE is
   first page table being shadowed.

----------------------------------------------------------------
David Matlack (1):
      KVM: x86/mmu: Process atomically-zapped SPTEs after TLB flush

Sean Christopherson (1):
      KVM: x86/mmu: Fix a largely theoretical race in kvm_mmu_track_write()

 arch/x86/kvm/mmu/mmu.c     | 20 +++++++++++--
 arch/x86/kvm/mmu/tdp_mmu.c | 75 ++++++++++++++++++++++++++++++----------------
 2 files changed, 66 insertions(+), 29 deletions(-)