[PATCH 0/4] KVM: x86/mmu: Page fault handling cleanups

[Sean Christopherson]

Cleanups for page fault handling that were encountered during early TDX
enabling, but are worthwhile on their own.  Specifically, patch 4 fixes an
issue where KVM doesn't detect a spurious page fault (due to the fault
being fixed by a different pCPU+vCPU) and does the full gamut of writing
the SPTE, updating stats, and prefetching SPTEs.

Sean Christopherson (4):
  KVM: x86/mmu: Return -EIO if page fault returns RET_PF_INVALID
  KVM: x86/mmu: Invert RET_PF_* check when falling through to emulation
  KVM: x86/mmu: Return unique RET_PF_* values if the fault was fixed
  KVM: x86/mmu: Bail early from final #PF handling on spurious faults

 arch/x86/kvm/mmu/mmu.c         | 70 +++++++++++++++++++++-------------
 arch/x86/kvm/mmu/mmutrace.h    | 13 +++----
 arch/x86/kvm/mmu/paging_tmpl.h |  3 ++
 3 files changed, 52 insertions(+), 34 deletions(-)

-- 
2.28.0