[PATCH v3 0/3] KVM: arm64: fix pKVM mapping cache corner cases

[Bradley Morgan]

This is a standalone v3.

Patch 1 fixes pKVM cache maintenance for non cacheable mappings without
growing struct pkvm_mapping.

Patch 2 fixes a pKVM mapping cache topup bug on permission faults that
replace page mappings with a PMD mapping.

Patch 3 fixes the generic dirty logging case where a permission fault
can still need a page table allocation to split a block mapping.

Changes in v3:
- Send as a standalone series with a cover letter.
- Store the pKVM cacheable bit in nr_pages instead of adding a bool.
- Drop stable from patch 1.
- Add patch 3 for dirty logging permission faults.

Changes in v2:
- Add patch 2 for the pKVM permission fault mapping cache bug.

Bradley Morgan (3):
  KVM: arm64: skip pKVM cache flushes for non cacheable mappings
  KVM: arm64: top up pKVM mapping cache for permission faults
  KVM: arm64: top up stage 2 memcache for dirty logging faults

 arch/arm64/kvm/mmu.c  | 32 +++++++++++++++++++--------
 arch/arm64/kvm/pkvm.c | 51 ++++++++++++++++++++++++++++++++++---------
 2 files changed, 64 insertions(+), 19 deletions(-)

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2.53.0