diff mbox series

[v7,25/45] KVM: arm64: WARN on injected undef exceptions

Message ID 20250213161426.102987-26-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 
The RMM doesn't allow injection of a undefined exception into a realm
guest. Add a WARN to catch if this ever happens.

Signed-off-by: Steven Price <steven.price@arm.com>
---
Changes since v6:
 * if (x) WARN(1, ...) makes no sense, just WARN(x, ...)!
---
 arch/arm64/kvm/inject_fault.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Gavin Shan March 4, 2025, 5:39 a.m. UTC | #1 
On 2/14/25 2:14 AM, Steven Price wrote:
> The RMM doesn't allow injection of a undefined exception into a realm
> guest. Add a WARN to catch if this ever happens.
> 
> Signed-off-by: Steven Price <steven.price@arm.com>
> ---
> Changes since v6:
>   * if (x) WARN(1, ...) makes no sense, just WARN(x, ...)!
> ---
>   arch/arm64/kvm/inject_fault.c | 1 +
>   1 file changed, 1 insertion(+)
> 

Reviewed-by: Gavin Shan <gshan@redhat.com>
diff mbox series

Patch

diff --git a/arch/arm64/kvm/inject_fault.c b/arch/arm64/kvm/inject_fault.c
index 2a9682b9834f..7dba6fc8c41d 100644
--- a/arch/arm64/kvm/inject_fault.c
+++ b/arch/arm64/kvm/inject_fault.c
@@ -226,6 +226,7 @@  void kvm_inject_size_fault(struct kvm_vcpu *vcpu)
  */
 void kvm_inject_undefined(struct kvm_vcpu *vcpu)
 {
+	WARN(vcpu_is_rec(vcpu), "Unexpected undefined exception injection to REC");
 	if (vcpu_el1_is_32bit(vcpu))
 		inject_undef32(vcpu);
 	else