[PATCH 3/3] kselftest/arm64: Handle attempts to disable SM on SME only systems

[Mark Brown]

The ABI for disabling streaming mode via ptrace is to do a write via the
SVE register set. Following the recent round of fixes to the ptrace code
we don't support this operation on systems without SVE, which is detected
as failures by fp-ptrace. Update the program so that it knows that this
operation is not currently supported.

Signed-off-by: Mark Brown <broonie at kernel.org>
---
 tools/testing/selftests/arm64/fp/fp-ptrace.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/testing/selftests/arm64/fp/fp-ptrace.c b/tools/testing/selftests/arm64/fp/fp-ptrace.c
index 9fc9dc4adaf9..21bc4eac092e 100644
--- a/tools/testing/selftests/arm64/fp/fp-ptrace.c
+++ b/tools/testing/selftests/arm64/fp/fp-ptrace.c
@@ -1061,6 +1061,9 @@ static bool sve_write_supported(struct test_config *config)
 		if (config->sme_vl_in != config->sme_vl_expected) {
 			return false;
 		}
+
+		if (!sve_supported())
+			return false;
 	}
 
 	return true;

-- 
2.39.5