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Message-Id: <20250523-kselftest-arm64-ssve-fixups-v1-2-65069a263b21@kernel.org>
Date: Fri, 23 May 2025 16:27:13 +0100
From: Mark Brown <broonie@...nel.org>
To: Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>, Shuah Khan <shuah@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>,
Shuah Khan <skhan@...uxfoundation.org>,
linux-arm-kernel@...ts.infradead.org, linux-kselftest@...r.kernel.org,
linux-kernel@...r.kernel.org, Mark Brown <broonie@...nel.org>
Subject: [PATCH 2/3] 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.
Signed-off-by: Mark Brown <broonie@...nel.org>
---
tools/testing/selftests/arm64/fp/sve-ptrace.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/arm64/fp/sve-ptrace.c b/tools/testing/selftests/arm64/fp/sve-ptrace.c
index c499d5789dd5..7e259907805b 100644
--- 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;
--
2.39.5
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