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[0/2] KVM: arm64: nv: Fix issue with Stage 2 MMU init for Nested case.

Message ID 20211122095803.28943-1-gankulkarni@os.amperecomputing.com (mailing list archive)
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Series KVM: arm64: nv: Fix issue with Stage 2 MMU init for Nested case. | expand

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Ganapatrao Kulkarni Nov. 22, 2021, 9:58 a.m. UTC 
The Guest Hypervisor stage 2 mmu table was used while creating map
and subsequent tlb flush for Nested VM. This resulted in unresolvable
stage 2 fault for Nested VM since tlb was invalidated with
Guest-Hypervisor VMID.

Patch 1/2 should be applied before the NV patchset[1].
Patch 2/2 can be squashed in to Commit 1776c91346b6 ("KVM: arm64: nv:
Support multiple nested Stage-2 mmu structures")[2].

[1] https://lore.kernel.org/kvmarm/20210510165920.1913477-1-maz@kernel.org/
[2] https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/
branch kvm-arm64/nv-5.13

Ganapatrao Kulkarni (2):
  KVM: arm64: Use appropriate mmu pointer in stage2 page table init.
  KVM: arm64: nv: fixup! Support multiple nested Stage-2 mmu structures

 arch/arm64/include/asm/kvm_pgtable.h  | 6 ++++--
 arch/arm64/kvm/hyp/nvhe/mem_protect.c | 2 +-
 arch/arm64/kvm/hyp/pgtable.c          | 3 ++-
 arch/arm64/kvm/mmu.c                  | 2 +-
 arch/arm64/kvm/nested.c               | 9 +++++++++
 5 files changed, 17 insertions(+), 5 deletions(-)