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[v7,34/45] kvm: rme: Hide KVM_CAP_READONLY_MEM for realm guests

Message ID 20250213161426.102987-35-steven.price@arm.com (mailing list archive)
State New
Headers show
Series arm64: Support for Arm CCA in KVM | expand

Commit Message

Steven Price Feb. 13, 2025, 4:14 p.m. UTC 
For protected memory read only isn't supported. While it may be possible
to support read only for unprotected memory, this isn't supported at the
present time.

Signed-off-by: Steven Price <steven.price@arm.com>
---
 arch/arm64/kvm/arm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 1f3674e95f03..0f1d65f87e2b 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -348,7 +348,6 @@  int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
 	case KVM_CAP_ONE_REG:
 	case KVM_CAP_ARM_PSCI:
 	case KVM_CAP_ARM_PSCI_0_2:
-	case KVM_CAP_READONLY_MEM:
 	case KVM_CAP_MP_STATE:
 	case KVM_CAP_IMMEDIATE_EXIT:
 	case KVM_CAP_VCPU_EVENTS:
@@ -362,6 +361,7 @@  int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
 	case KVM_CAP_COUNTER_OFFSET:
 		r = 1;
 		break;
+	case KVM_CAP_READONLY_MEM:
 	case KVM_CAP_SET_GUEST_DEBUG:
 		r = !kvm_is_realm(kvm);
 		break;