[RFC PATCH v1 01/30] KVM: arm64: placeholder to check if VM is protected

[Fuad Tabba]

Add a function to check whether a VM is protected (under pKVM).
Since the creation of protected VMs isn't enabled yet, this is a
placeholder that always returns false. The intention is for this
to become a check for protected VMs in the future (see Will's RFC).

No functional change intended.

Acked-by: Will Deacon <will at kernel.org>
Signed-off-by: Fuad Tabba <tabba at google.com>

Link: https://lore.kernel.org/kvmarm/20210603183347.1695-1-will@kernel.org/
---
 arch/arm64/include/asm/kvm_host.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 7cd7d5c8c4bc..adb21a7f0891 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -763,6 +763,11 @@ void kvm_arch_free_vm(struct kvm *kvm);
 
 int kvm_arm_setup_stage2(struct kvm *kvm, unsigned long type);
 
+static inline bool kvm_vm_is_protected(struct kvm *kvm)
+{
+	return false;
+}
+
 int kvm_arm_vcpu_finalize(struct kvm_vcpu *vcpu, int feature);
 bool kvm_arm_vcpu_is_finalized(struct kvm_vcpu *vcpu);
 
-- 
2.33.0.685.g46640cef36-goog