[PATCH v5 34/43] kvm: rme: Hide KVM_CAP_READONLY_MEM for realm guests

From: Steven Price
Date: Fri Oct 04 2024 - 11:40:27 EST


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@xxxxxxx>
---
arch/arm64/kvm/arm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 01128413088a..75d1216cf9e5 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -378,7 +378,6 @@ 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:
@@ -392,6 +391,7 @@ 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;
--
2.34.1