Commit b43ab36a authored by Mark Brown's avatar Mark Brown Committed by Catalin Marinas
Browse files

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: default avatarMark Brown <broonie@kernel.org>
Reviewed-by: default avatarDave Martin <Dave.Martin@arm.com>
Link: https://lore.kernel.org/r/20210803140450.46624-3-broonie@kernel.org


Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 77108610

tools/testing/selftests/arm64/fp/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -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

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

+5 −0
Original line number Diff line number Diff line
@@ -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);