[PATCH v2] arm64: Add missing registrations of hwcaps

[Mark Rutland]

On Wed, Feb 12, 2025 at 12:30:42AM +0000, Mark Brown wrote:
> Commit 819935464cb2 ("arm64/hwcap: Describe 2024 dpISA extensions to
> userspace") added definitions for HWCAP_FPRCVT, HWCAP_F8MM8 and
> HWCAP_F8MM4 but did not include the crucial registration in
> arm64_elf_hwcaps.  Add it.
> 
> Fixes: 819935464cb2 ("arm64/hwcap: Describe 2024 dpISA extensions to userspace")
> Reported-by: Mark Rutland <mark.rutland at arm.com>
> Signed-off-by: Mark Brown <broonie at kernel.org>

Thanks for the respin.

Acked-by: Mark Rutland <mark.rutland at arm.com>

Mark.

> ---
> Changes in v2:
> - Add FPRCVT.
> - Link to v1: https://lore.kernel.org/r/20250210-arm64-fix-2024-dpisa-v1-1-d77f43c7b253@kernel.org
> ---
>  arch/arm64/kernel/cpufeature.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
> index f0910f20fbf8c18fbeb63bcee18abf13371b1d5e..d561cf3b8ac7b11784282dc889852ef52a7b8f6e 100644
> --- a/arch/arm64/kernel/cpufeature.c
> +++ b/arch/arm64/kernel/cpufeature.c
> @@ -3091,6 +3091,7 @@ static const struct arm64_cpu_capabilities arm64_elf_hwcaps[] = {
>  	HWCAP_CAP(ID_AA64ISAR0_EL1, TS, FLAGM, CAP_HWCAP, KERNEL_HWCAP_FLAGM),
>  	HWCAP_CAP(ID_AA64ISAR0_EL1, TS, FLAGM2, CAP_HWCAP, KERNEL_HWCAP_FLAGM2),
>  	HWCAP_CAP(ID_AA64ISAR0_EL1, RNDR, IMP, CAP_HWCAP, KERNEL_HWCAP_RNG),
> +	HWCAP_CAP(ID_AA64ISAR3_EL1, FPRCVT, IMP, CAP_HWCAP, KERNEL_HWCAP_FPRCVT),
>  	HWCAP_CAP(ID_AA64PFR0_EL1, FP, IMP, CAP_HWCAP, KERNEL_HWCAP_FP),
>  	HWCAP_CAP(ID_AA64PFR0_EL1, FP, FP16, CAP_HWCAP, KERNEL_HWCAP_FPHP),
>  	HWCAP_CAP(ID_AA64PFR0_EL1, AdvSIMD, IMP, CAP_HWCAP, KERNEL_HWCAP_ASIMD),
> @@ -3190,6 +3191,8 @@ static const struct arm64_cpu_capabilities arm64_elf_hwcaps[] = {
>  	HWCAP_CAP(ID_AA64FPFR0_EL1, F8FMA, IMP, CAP_HWCAP, KERNEL_HWCAP_F8FMA),
>  	HWCAP_CAP(ID_AA64FPFR0_EL1, F8DP4, IMP, CAP_HWCAP, KERNEL_HWCAP_F8DP4),
>  	HWCAP_CAP(ID_AA64FPFR0_EL1, F8DP2, IMP, CAP_HWCAP, KERNEL_HWCAP_F8DP2),
> +	HWCAP_CAP(ID_AA64FPFR0_EL1, F8MM8, IMP, CAP_HWCAP, KERNEL_HWCAP_F8MM8),
> +	HWCAP_CAP(ID_AA64FPFR0_EL1, F8MM4, IMP, CAP_HWCAP, KERNEL_HWCAP_F8MM4),
>  	HWCAP_CAP(ID_AA64FPFR0_EL1, F8E4M3, IMP, CAP_HWCAP, KERNEL_HWCAP_F8E4M3),
>  	HWCAP_CAP(ID_AA64FPFR0_EL1, F8E5M2, IMP, CAP_HWCAP, KERNEL_HWCAP_F8E5M2),
>  #ifdef CONFIG_ARM64_POE
> 
> ---
> base-commit: 21fed7c223e20e694b91dbf25936d922a50c8b19
> change-id: 20250207-arm64-fix-2024-dpisa-635a5961609c
> 
> Best regards,
> -- 
> Mark Brown <broonie at kernel.org>
>