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authorMark Brown <broonie@kernel.org>2021-08-03 15:04:48 +0100
committerCatalin Marinas <catalin.marinas@arm.com>2021-08-03 16:20:05 +0100
commitb43ab36a6d86f6c693f5919ee2cf25c543446213 (patch)
treed911ba38762a098d0bfecf436ae90305a4745668 /tools/testing/selftests/arm64
parentkselftest/arm64: Provide a helper binary and "library" for SVE RDVL (diff)
downloadlinux-dev-b43ab36a6d86f6c693f5919ee2cf25c543446213.tar.xz
linux-dev-b43ab36a6d86f6c693f5919ee2cf25c543446213.zip
kselftest/arm64: Validate vector lengths are set in sve-probe-vls
Currently sve-probe-vls does not verify that the vector lengths reported by the prctl() interface are actually what is reported by the architecture, use the rdvl_sve() helper to validate this. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Dave Martin <Dave.Martin@arm.com> Link: https://lore.kernel.org/r/20210803140450.46624-3-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'tools/testing/selftests/arm64')
-rw-r--r--tools/testing/selftests/arm64/fp/Makefile2
-rw-r--r--tools/testing/selftests/arm64/fp/sve-probe-vls.c5
2 files changed, 6 insertions, 1 deletions
diff --git a/tools/testing/selftests/arm64/fp/Makefile b/tools/testing/selftests/arm64/fp/Makefile
index ed62e7003b96..fa3a0167db2d 100644
--- a/tools/testing/selftests/arm64/fp/Makefile
+++ b/tools/testing/selftests/arm64/fp/Makefile
@@ -13,7 +13,7 @@ fpsimd-test: fpsimd-test.o
$(CC) -nostdlib $^ -o $@
rdvl-sve: rdvl-sve.o rdvl.o
sve-ptrace: sve-ptrace.o sve-ptrace-asm.o
-sve-probe-vls: sve-probe-vls.o
+sve-probe-vls: sve-probe-vls.o rdvl.o
sve-test: sve-test.o
$(CC) -nostdlib $^ -o $@
vlset: vlset.o
diff --git a/tools/testing/selftests/arm64/fp/sve-probe-vls.c b/tools/testing/selftests/arm64/fp/sve-probe-vls.c
index 76e138525d55..a24eca7a4ecb 100644
--- a/tools/testing/selftests/arm64/fp/sve-probe-vls.c
+++ b/tools/testing/selftests/arm64/fp/sve-probe-vls.c
@@ -13,6 +13,7 @@
#include <asm/sigcontext.h>
#include "../../kselftest.h"
+#include "rdvl.h"
int main(int argc, char **argv)
{
@@ -38,6 +39,10 @@ int main(int argc, char **argv)
vl &= PR_SVE_VL_LEN_MASK;
+ if (rdvl_sve() != vl)
+ ksft_exit_fail_msg("PR_SVE_SET_VL reports %d, RDVL %d\n",
+ vl, rdvl_sve());
+
if (!sve_vl_valid(vl))
ksft_exit_fail_msg("VL %d invalid\n", vl);
vq = sve_vq_from_vl(vl);