[PATCH v1 5/6] arm64/hwcap: Add support for SVE 2.1

[Catalin Marinas]

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 at 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 at arm.com>