[PATCH] kselftest/arm64: Correct buffer allocation for SVE Z registers
From: Mark Brown <broonie@kernel.org>
Date: 2022-07-20 18:22:57
Also in:
linux-kselftest
Subsystem:
arm64 port (aarch64 architecture), kernel selftest framework, the rest · Maintainers:
Catalin Marinas, Will Deacon, Shuah Khan, Shuah Khan, Linus Torvalds
The buffer used for verifying SVE Z registers allocated enough space for 16 maximally sized registers rather than 32 due to using the macro for the number of P registers. In practice this didn't matter since for historical reasons the maximum VQ defined in the ABI is greater the architectural maximum so we will always allocate more space than is needed even with emulated platforms implementing the architectural maximum. Still, we should use the right define. Signed-off-by: Mark Brown <broonie@kernel.org> --- tools/testing/selftests/arm64/abi/syscall-abi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/arm64/abi/syscall-abi.c b/tools/testing/selftests/arm64/abi/syscall-abi.c
index b632bfe9e022..95229fa73232 100644
--- a/tools/testing/selftests/arm64/abi/syscall-abi.c
+++ b/tools/testing/selftests/arm64/abi/syscall-abi.c@@ -113,8 +113,8 @@ static int check_fpr(struct syscall_cfg *cfg, int sve_vl, int sme_vl, } static uint8_t z_zero[__SVE_ZREG_SIZE(SVE_VQ_MAX)]; -uint8_t z_in[SVE_NUM_PREGS * __SVE_ZREG_SIZE(SVE_VQ_MAX)]; -uint8_t z_out[SVE_NUM_PREGS * __SVE_ZREG_SIZE(SVE_VQ_MAX)]; +uint8_t z_in[SVE_NUM_ZREGS * __SVE_ZREG_SIZE(SVE_VQ_MAX)]; +uint8_t z_out[SVE_NUM_ZREGS * __SVE_ZREG_SIZE(SVE_VQ_MAX)]; static void setup_z(struct syscall_cfg *cfg, int sve_vl, int sme_vl, uint64_t svcr)
--
2.30.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel