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KVM: arm64: Introduce __pkvm_host_test_clear_young_guest()

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Plumb the kvm_stage2_test_clear_young() callback into pKVM for
non-protected guest. It will be later be called from MMU notifiers.

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/20241218194059.3670226-15-qperret@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Quentin Perret
2024-12-18 19:40:55 +00:00
committed by Marc Zyngier
parent 26117e4c63
commit 56ab4de37f
4 changed files with 43 additions and 0 deletions
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arch/arm64/include/asm/kvm_asm.h
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@@ -69,6 +69,7 @@ enum __kvm_host_smccc_func {
__KVM_HOST_SMCCC_FUNC___pkvm_host_unshare_guest,
__KVM_HOST_SMCCC_FUNC___pkvm_host_relax_perms_guest,
__KVM_HOST_SMCCC_FUNC___pkvm_host_wrprotect_guest,
__KVM_HOST_SMCCC_FUNC___pkvm_host_test_clear_young_guest,
__KVM_HOST_SMCCC_FUNC___kvm_adjust_pc,
__KVM_HOST_SMCCC_FUNC___kvm_vcpu_run,
__KVM_HOST_SMCCC_FUNC___kvm_flush_vm_context,