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kselftest/arm64: Validate vector lengths are set in sve-probe-vls

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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>
This commit is contained in:
Mark Brown 2021-08-03 15:04:48 +01:00 committed by Catalin Marinas
parent 7710861017
commit b43ab36a6d
2 changed files with 6 additions and 1 deletions
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2
tools/testing/selftests/arm64/fp/Makefile
View File

@ -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

5
tools/testing/selftests/arm64/fp/sve-probe-vls.c
View File

@ -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);