On Mon, Oct 17, 2022 at 04:25:19PM +0100, Mark Brown wrote:
FEAT_SVE2p1 introduces a number of new SVE instructions. Since there is no new architectural state added kernel support is simply a new hwcap which lets userspace know that the feature is supported.
Signed-off-by: Mark Brown broonie@kernel.org
Documentation/arm64/elf_hwcaps.rst | 3 +++ Documentation/arm64/sve.rst | 1 + arch/arm64/include/asm/hwcap.h | 1 + arch/arm64/include/uapi/asm/hwcap.h | 1 + arch/arm64/kernel/cpufeature.c | 1 + arch/arm64/kernel/cpuinfo.c | 1 + arch/arm64/tools/sysreg | 1 + 7 files changed, 9 insertions(+)
diff --git a/Documentation/arm64/elf_hwcaps.rst b/Documentation/arm64/elf_hwcaps.rst index a82b2cdff680..6fed84f935df 100644 --- a/Documentation/arm64/elf_hwcaps.rst +++ b/Documentation/arm64/elf_hwcaps.rst @@ -281,6 +281,9 @@ HWCAP2_CSSC HWCAP2_RPRFM Functionality implied by ID_AA64ISAR2_EL1.RPRFM == 0b0001. +HWCAP2_SVE2P1
- Functionality implied by ID_AA64ZFR0_EL1.SVEver == 0b0010.
It looks like our architect ran out of meaningful names. I guess we should just follow them in the kernel.
Reviewed-by: Catalin Marinas catalin.marinas@arm.com