From: Dave Martin <Dave.Martin@arm.com>
To: Mark Brown <broonie@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Shuah Khan <skhan@linuxfoundation.org>,
linux-arm-kernel@lists.infradead.org,
linux-kselftest@vger.kernel.org
Subject: Re: [PATCH v2 2/4] kselftest/arm64: Validate vector lengths are set in sve-probe-vls
Date: Thu, 29 Jul 2021 10:52:33 +0100 [thread overview]
Message-ID: <20210729095232.GI1724@arm.com> (raw)
In-Reply-To: <20210728163318.51492-3-broonie@kernel.org>
On Wed, Jul 28, 2021 at 05:33:16PM +0100, Mark Brown wrote:
> 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>
> ---
> tools/testing/selftests/arm64/fp/Makefile | 2 +-
> tools/testing/selftests/arm64/fp/sve-probe-vls.c | 5 +++++
> 2 files changed, 6 insertions(+), 1 deletion(-)
>
> 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);
> --
> 2.20.1
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-07-29 9:53 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-28 16:33 [PATCH v2 0/4] kselftest/arm64: Vector length configuration tests Mark Brown
2021-07-28 16:33 ` [PATCH v2 1/4] kselftest/arm64: Provide a helper binary and "library" for SVE RDVL Mark Brown
2021-07-29 9:52 ` Dave Martin
2021-07-29 11:22 ` Mark Brown
2021-07-29 13:27 ` Dave P Martin
2021-07-29 16:03 ` Mark Brown
2021-07-29 16:17 ` Dave Martin
2021-07-28 16:33 ` [PATCH v2 2/4] kselftest/arm64: Validate vector lengths are set in sve-probe-vls Mark Brown
2021-07-29 9:52 ` Dave Martin [this message]
2021-07-28 16:33 ` [PATCH v2 3/4] kselftest/arm64: Add tests for SVE vector configuration Mark Brown
2021-07-29 9:52 ` Dave Martin
2021-07-28 16:33 ` [PATCH v2 4/4] kselftest/arm64: Add a TODO list for floating point tests Mark Brown
2021-07-29 9:52 ` Dave Martin
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