| Message ID | 20230922-arm64-ssve-validate-svcr-v1-1-f518960eaeda@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | kselftest/arm64: Validate SVCR in streaming SVE stress test | expand |
On Fri, 22 Sep 2023 14:42:55 +0100, Mark Brown wrote: > In the ZA and ZT test programs we explicitly validate that PSTATE.ZA is as > expected on each loop but we do not do the equivalent for our streaming > SVE test, add a check that we are still in streaming mode on every loop > in case that goes wrong. > > Applied to arm64 (for-next/kselftest), thanks! [1/1] kselftest/arm64: Validate SVCR in streaming SVE stress test https://git.kernel.org/arm64/c/11a7a42ea76e
diff --git a/tools/testing/selftests/arm64/fp/sve-test.S b/tools/testing/selftests/arm64/fp/sve-test.S index 4328895dfc87..547d077e3517 100644 --- a/tools/testing/selftests/arm64/fp/sve-test.S +++ b/tools/testing/selftests/arm64/fp/sve-test.S @@ -473,6 +473,13 @@ function _start // mov x8, #__NR_sched_yield // Encourage preemption // svc #0 +#ifdef SSVE + mrs x0, S3_3_C4_C2_2 // SVCR should have ZA=0,SM=1 + and x1, x0, #3 + cmp x1, #1 + b.ne svcr_barf +#endif + mov x21, #0 0: mov x0, x21 bl check_zreg @@ -553,3 +560,15 @@ function vl_barf mov x1, #1 svc #0 endfunction + +function svcr_barf + mov x10, x0 + + puts "Bad SVCR: " + mov x0, x10 + bl putdecn + + mov x8, #__NR_exit + mov x1, #1 + svc #0 +endfunction
In the ZA and ZT test programs we explicitly validate that PSTATE.ZA is as expected on each loop but we do not do the equivalent for our streaming SVE test, add a check that we are still in streaming mode on every loop in case that goes wrong. Signed-off-by: Mark Brown <broonie@kernel.org> --- tools/testing/selftests/arm64/fp/sve-test.S | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) --- base-commit: ce9ecca0238b140b88f43859b211c9fdfd8e5b70 change-id: 20230921-arm64-ssve-validate-svcr-316852554fc8 Best regards,