[PATCH v2 0/4] Fix guest_memfd and protected VMs on systems with pages larger than 4K

[Vincent Donnefort]

This series allows booting protected VMs and guest_memfd-back VMs on
systems with a page size larger than 4K.

Currently, the fault handling assumes 4K alignment, as HPFAR_EL2
provides the IPA minus the bottom 12 bits regardless of the system page
size. This leads to mapping failures on 16K and 64K systems.

This series addresses the alignment mismatch by relying on struct
kvm_s2_fault_vma_info in both gmem_abort() and pkvm_mem_abort() to
retrieve correctly page-aligned addresses.

This series bundles the following previously discussed fixes:

 1. https://lore.kernel.org/all/20260915091606.2111217-1-vdonnefort@google.com
 2. https://lore.kernel.org/all/20260915084438.2076072-1-vdonnefort@google.com

v2:
  - Use forward declarations (Marc)
  - gmem_abort(): rename local gfn to canonical_gfn (Wei-Lin)
  - Pick up Reviewed-by and Tested-by tags
  - Rebase on v7.3-rc5

v1: https://lore.kernel.org/all/20260922130821.1666713-1-vdonnefort@google.com/

Fuad Tabba (1):
  KVM: arm64: Use kvm_s2_fault_vma_info in gmem_abort()

Vincent Donnefort (3):
  KVM: arm64: Fix MMFR0 TGRAN advertisement for pVMs
  KVM: arm64: Pass kvm_s2_fault_desc to
    fault_supports_stage2_huge_mapping()
  KVM: arm64: Use kvm_s2_fault_vma_info in pkvm_mem_abort()

 arch/arm64/kvm/hyp/nvhe/sys_regs.c |   3 +
 arch/arm64/kvm/mmu.c               | 129 +++++++++++++++--------------
 arch/arm64/kvm/pkvm.c              |   3 +
 3 files changed, 75 insertions(+), 60 deletions(-)


base-commit: 72d3fcf802c45d00b300f25b848a93c3a2bd7c7e
-- 
2.56.0.rc1.315.gc6ed9934b7-goog