[PATCH v3] KVM: arm64: selftests: Check SError is not pending after delivery

[Fuad Tabba <fuad.tabba@linux.dev>]

test_serror() never looks at the vCPU after the SError is delivered, so
a stale pending SError goes unnoticed. Read the vCPU events back and
check the SError is no longer pending.

Signed-off-by: Fuad Tabba <fuad.tabba@linux.dev>
---
The fix from v2 was applied [1], but not this test.

Changes since v2 [2]:
- Dropped the fix, now in kvmarm/next.
- Rebased on kvmarm/next.

[1] https://lore.kernel.org/all/20261001135711.1640520-2-fuad.tabba@linux.dev/
[2] https://lore.kernel.org/all/20260921101030.1231605-1-fuad.tabba@linux.dev/

 tools/testing/selftests/kvm/arm64/external_aborts.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tools/testing/selftests/kvm/arm64/external_aborts.c b/tools/testing/selftests/kvm/arm64/external_aborts.c
index 7836756a38a6c..c35b0c87250a1 100644
--- a/tools/testing/selftests/kvm/arm64/external_aborts.c
+++ b/tools/testing/selftests/kvm/arm64/external_aborts.c
@@ -239,6 +239,7 @@ static void test_serror_guest(void)
 
 static void test_serror(void)
 {
+	struct kvm_vcpu_events events;
 	struct kvm_vcpu *vcpu;
 	struct kvm_vm *vm = vm_create_with_dabt_handler(&vcpu, test_serror_guest,
 							unexpected_dabt_handler);
@@ -247,6 +248,11 @@ static void test_serror(void)
 
 	vcpu_inject_serror(vcpu);
 	vcpu_run_expect_done(vcpu);
+
+	vcpu_events_get(vcpu, &events);
+	TEST_ASSERT(!events.exception.serror_pending,
+		    "SError still pending after the guest took it");
+
 	kvm_vm_free(vm);
 }
 

base-commit: fa22cd9947fc245d71bc40482f7f78eb0d5a4af0
-- 
2.39.5