On 11/17/25 02:40, Gabriel Brookman wrote:
This test cannot be run in user-mode because the control bit that
enables this feature is only writable at EL1.
Signed-off-by: Gabriel Brookman <[email protected]>
---
tests/tcg/aarch64/Makefile.target | 2 +-
tests/tcg/aarch64/mte-10.c | 55 +++++++++++++++++++++++++++++++++++++++
2 files changed, 56 insertions(+), 1 deletion(-)
diff --git a/tests/tcg/aarch64/Makefile.target
b/tests/tcg/aarch64/Makefile.target
index b491cfb5e1..6203ac9b51 100644
--- a/tests/tcg/aarch64/Makefile.target
+++ b/tests/tcg/aarch64/Makefile.target
@@ -64,7 +64,7 @@ AARCH64_TESTS += bti-2
# MTE Tests
ifneq ($(CROSS_CC_HAS_ARMV8_MTE),)
-AARCH64_TESTS += mte-1 mte-2 mte-3 mte-4 mte-5 mte-6 mte-7 mte-8 mte-9
+AARCH64_TESTS += mte-1 mte-2 mte-3 mte-4 mte-5 mte-6 mte-7 mte-8 mte-9 mte-10
mte-%: CFLAGS += $(CROSS_CC_HAS_ARMV8_MTE)
endif
diff --git a/tests/tcg/aarch64/mte-10.c b/tests/tcg/aarch64/mte-10.c
new file mode 100644
index 0000000000..0fa3f97e1d
--- /dev/null
+++ b/tests/tcg/aarch64/mte-10.c
@@ -0,0 +1,55 @@
+/*
+ * Memory tagging, write-only tag checking
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "mte.h"
+
+void pass(int sig, siginfo_t *info, void *uc)
+{
+ exit(0);
+}
+
+int main(int ac, char **av)
+{
+ struct sigaction sa;
+ int *p0, *p1, *p2;
+ long excl = 1;
+
+ /*
+ * NOTE FOR REVIEWERS: to run this test locally, I modified
+ * enable_mte to also activate write-only tag checking by writing
+ * to ID_AA64PFR2_EL1. I am not sure how to modify the test so that
+ * it works without that modification. Input appreciated.
+ */
+ enable_mte(PR_MTE_TCF_SYNC);
You must
(1) Delay the patch adding the test case until after FEAT_MTE_STORE_ONLY is enabled
(currently patch 10)
(2) Implement support for PR_MTE_STORE_ONLY in linux-user/.
r~
