KVM: arm64: Introduce __pkvm_host_wrprotect_guest()

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Introduce a new hypercall to remove the write permission from a
non-protected guest stage-2 mapping. This will be used for e.g. enabling
dirty logging.

Tested-by: Fuad Tabba <tabba@google.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Quentin Perret <qperret@google.com>
Link: https://lore.kernel.org/r/20241218194059.3670226-14-qperret@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>

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Quentin Perret 2024-12-18 19:40:54 +00:00 • committed by Marc Zyngier

parent 34884a0a4a

commit 26117e4c63

4 changed files with 42 additions and 0 deletions

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arch/arm64/include/asm/kvm_asm.h

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arch/arm64/kvm/hyp/include/nvhe/mem_protect.h

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arch/arm64/kvm/hyp/nvhe/hyp-main.c

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arch/arm64/kvm/hyp/nvhe/mem_protect.c

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