[PATCH] selftests/powerpc: Skip tm-trap if transactional memory is not enabled

[Michael Ellerman]

Some processor revisions do not support transactional memory, and
additionally kernel support can be disabled. In either case the
tm-trap test should be skipped, otherwise it will fail with a SIGILL.

Fixes: a08082f8e4e1 ("powerpc/selftests: Check endianness on trap in TM")
Signed-off-by: Michael Ellerman <m...@ellerman.id.au>
---
 tools/testing/selftests/powerpc/tm/tm-trap.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/powerpc/tm/tm-trap.c 
b/tools/testing/selftests/powerpc/tm/tm-trap.c
index 5d92c23ee6cb..179d592f0073 100644
--- a/tools/testing/selftests/powerpc/tm/tm-trap.c
+++ b/tools/testing/selftests/powerpc/tm/tm-trap.c
@@ -255,6 +255,8 @@ int tm_trap_test(void)
 
        struct sigaction trap_sa;
 
+       SKIP_IF(!have_htm());
+
        trap_sa.sa_flags = SA_SIGINFO;
        trap_sa.sa_sigaction = trap_signal_handler;
        sigaction(SIGTRAP, &trap_sa, NULL);
-- 
2.14.1