[PATCH] kselftest/arm64: Extend gcs-locking to cover cases where enable is unlocked

[Mark Brown]

The gcs-locking test case currently only covers locking combinations of
the various flags that can be set for GCS (enable, write and push) where
enable is included in the locked bits. Since it is valid to only lock a
combination of write and push while leaving enable user controllable we
should also cover those cases, add coverage for them. The new cases pass
as expected.

Signed-off-by: Mark Brown <broonie at kernel.org>
---
 tools/testing/selftests/arm64/gcs/gcs-locking.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/tools/testing/selftests/arm64/gcs/gcs-locking.c b/tools/testing/selftests/arm64/gcs/gcs-locking.c
index 1e6abb136ffd..4dd7ab4191f1 100644
--- a/tools/testing/selftests/arm64/gcs/gcs-locking.c
+++ b/tools/testing/selftests/arm64/gcs/gcs-locking.c
@@ -77,6 +77,21 @@ FIXTURE_VARIANT_ADD(valid_modes, enable_write_push)
 		PR_SHADOW_STACK_PUSH,
 };
 
+FIXTURE_VARIANT_ADD(valid_modes, write)
+{
+	.mode = PR_SHADOW_STACK_WRITE,
+};
+
+FIXTURE_VARIANT_ADD(valid_modes, push)
+{
+	.mode = PR_SHADOW_STACK_PUSH,
+};
+
+FIXTURE_VARIANT_ADD(valid_modes, write_push)
+{
+	.mode = PR_SHADOW_STACK_WRITE | PR_SHADOW_STACK_PUSH,
+};
+
 FIXTURE_SETUP(valid_modes)
 {
 }

---
base-commit: cee9395acd8043be0644b25c34bfa86623f2b935
change-id: 20260826-arm64-test-gcs-locking-no-enable-c291cdcdf083

Best regards,
--  
Mark Brown <broonie at kernel.org>