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authorMark Brown <broonie@kernel.org>2022-01-24 20:55:26 +0300
committerCatalin Marinas <catalin.marinas@arm.com>2022-01-28 14:28:49 +0300
commit50806fd91428a28d5daa649310dd0ca05b39c118 (patch)
treeb13d7a33fb16b5c85dfa0bf4508924ee1071cb1e /tools/testing
parent3758a6c74e08bdc15ccccd6872a6ad37d165239a (diff)
downloadlinux-50806fd91428a28d5daa649310dd0ca05b39c118.tar.xz
kselftest/arm64: Skip VL_INHERIT tests for unsupported vector types
Currently we unconditionally test the ability to set the vector length inheritance flag via ptrace meaning that we generate false failures on systems that don't support SVE when we attempt to set the vector length there. Check the hwcap and mark the tests as skipped when it's not present. Fixes: 0ba1ce1e8605 ("selftests: arm64: Add coverage of ptrace flags for SVE VL inheritance") Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org> Link: https://lore.kernel.org/r/20220124175527.3260234-2-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'tools/testing')
-rw-r--r--tools/testing/selftests/arm64/fp/sve-ptrace.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/tools/testing/selftests/arm64/fp/sve-ptrace.c b/tools/testing/selftests/arm64/fp/sve-ptrace.c
index af798b9d232c..0cf78360c5bc 100644
--- a/tools/testing/selftests/arm64/fp/sve-ptrace.c
+++ b/tools/testing/selftests/arm64/fp/sve-ptrace.c
@@ -557,7 +557,14 @@ static int do_parent(pid_t child)
}
/* prctl() flags */
- ptrace_set_get_inherit(child, &vec_types[i]);
+ if (getauxval(vec_types[i].hwcap_type) & vec_types[i].hwcap) {
+ ptrace_set_get_inherit(child, &vec_types[i]);
+ } else {
+ ksft_test_result_skip("%s SVE_PT_VL_INHERIT set\n",
+ vec_types[i].name);
+ ksft_test_result_skip("%s SVE_PT_VL_INHERIT cleared\n",
+ vec_types[i].name);
+ }
/* Step through every possible VQ */
for (vq = SVE_VQ_MIN; vq <= SVE_VQ_MAX; vq++) {