[PATCH 59/89] KVM: arm64: Do not support MTE for protected VMs

[Will Deacon]

From: Fuad Tabba <ta...@google.com>

Return an error (-EINVAL) if trying to enable MTE on a protected
vm.

Signed-off-by: Fuad Tabba <ta...@google.com>
---
 arch/arm64/kvm/arm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 10e036bf06e3..8a1b4ba1dfa7 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -90,7 +90,9 @@ int kvm_vm_ioctl_enable_cap(struct kvm *kvm,
                break;
        case KVM_CAP_ARM_MTE:
                mutex_lock(&kvm->lock);
-               if (!system_supports_mte() || kvm->created_vcpus) {
+               if (!system_supports_mte() ||
+                   kvm_vm_is_protected(kvm) ||
+                   kvm->created_vcpus) {
                        r = -EINVAL;
                } else {
                        r = 0;
-- 
2.36.1.124.g0e6072fb45-goog

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