KVM: arm64: Introduce __pkvm_host_share_guest()

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In preparation for handling guest stage-2 mappings at EL2, introduce a
new pKVM hypercall allowing to share pages with non-protected guests.

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/20241218194059.3670226-11-qperret@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>

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This commit is contained in:

Quentin Perret 2024-12-18 19:40:51 +00:00 • committed by Marc Zyngier

parent f7d03fcbf1

commit d0bd3e6570

7 changed files with 123 additions and 1 deletions

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1

arch/arm64/include/asm/kvm_asm.h

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arch/arm64/include/asm/kvm_host.h

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

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arch/arm64/kvm/hyp/include/nvhe/memory.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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arch/arm64/kvm/hyp/nvhe/pkvm.c

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