kselftest/arm64: Fix test for streaming FPSIMD write in sve-ptrace

Since f916dd32a943 ("arm64/fpsimd: ptrace: Mandate SVE payload for
streaming-mode state") we do not support writing FPSIMD payload data when
writing NT_ARM_SSVE but the sve-ptrace test has an explicit test for
this being supported which was not updated to reflect the new behaviour.
Fix the test to expect a failure when writing FPSIMD data to the
streaming mode register set.

Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20250609-kselftest-arm64-ssve-fixups-v2-2-998fcfa6f240@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/tools/testing/selftests/arm64/fp/sve-ptrace.c b/tools/testing/selftests/arm64/fp/sve-ptrace.c
index c499d5789dd53fb880dc9e3618308680a51a778e..7e259907805ba9f6b95d8793ee2315fa55f2da68 100644 (file)
--- a/tools/testing/selftests/arm64/fp/sve-ptrace.c
+++ b/tools/testing/selftests/arm64/fp/sve-ptrace.c
@@ -301,8 +301,10 @@ static void ptrace_sve_fpsimd(pid_t child, const struct vec_type *type)
                        p[j] = j;
        }
 
+       /* This should only succeed for SVE */
        ret = set_sve(child, type, sve);
-       ksft_test_result(ret == 0, "%s FPSIMD set via SVE: %d\n",
+       ksft_test_result((type->regset == NT_ARM_SVE) == (ret == 0),
+                        "%s FPSIMD set via SVE: %d\n",
                         type->name, ret);
        if (ret)
                goto out;