From: Mark Brown <broonie@kernel.org> mainline inclusion from mainline-v6.7-rc1 commit 3accaef1f61e0c5531ae9e92ff0d66981cdf1516 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/8904 CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i... ---------------------------------------------------------------------- Validate that SVE B16B16 support is reported correctly and consistently to userspace. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20230915-arm64-zfr-b16b16-el0-v1-2-f9aba807bdb5@ke... Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Conflicts: arch/arm64/kernel/cpufeature.c tools/testing/selftests/arm64/abi/hwcap.c [context conflict] Signed-off-by: Qinxin Xia <xiaqinxin@huawei.com> Signed-off-by: Hongye Lin <linhongye@h-partners.com> --- tools/testing/selftests/arm64/abi/hwcap.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c index ef99797c4a2b..61f9b9741425 100644 --- a/tools/testing/selftests/arm64/abi/hwcap.c +++ b/tools/testing/selftests/arm64/abi/hwcap.c @@ -333,6 +333,12 @@ static void sveaes_sigill(void) asm volatile(".inst 0x4522e400" : : : "z0"); } +static void sveb16b16_sigill(void) +{ + /* BFADD ZA.H[W0, 0], {Z0.H-Z1.H} */ + asm volatile(".inst 0xC1E41C00" : : : ); +} + static void svepmull_sigill(void) { /* PMULLB Z0.Q, Z0.D, Z0.D */ @@ -697,6 +703,13 @@ static const struct hwcap_data { .cpuinfo = "sveaes", .sigill_fn = sveaes_sigill, }, + { + .name = "SVE2 B16B16", + .at_hwcap = AT_HWCAP2, + .hwcap_bit = HWCAP2_SVE_B16B16, + .cpuinfo = "sveb16b16", + .sigill_fn = sveb16b16_sigill, + }, { .name = "SVE2 PMULL", .at_hwcap = AT_HWCAP2, -- 2.33.0