Re: [PATCH 07/10] riscv: add ISA extension parsing for Zcmop

[Deepak Gupta]

On Wed, Apr 10, 2024 at 11:11:00AM +0200, Clément Léger wrote:
> Add parsing for Zcmop ISA extension which was ratified in commit
> b854a709c00 ("Zcmop is ratified/1.0") of the riscv-isa-manual.
>
> Signed-off-by: Clément Léger <cleger@xxxxxxxxxxxx>
> ---
> arch/riscv/include/asm/hwcap.h | 1 +
> arch/riscv/kernel/cpufeature.c | 1 +
> 2 files changed, 2 insertions(+)
>
> diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h
> index b7551bad341b..cff7660de268 100644
> --- a/arch/riscv/include/asm/hwcap.h
> +++ b/arch/riscv/include/asm/hwcap.h
> @@ -86,6 +86,7 @@
> #define RISCV_ISA_EXT_ZCB		77
> #define RISCV_ISA_EXT_ZCD		78
> #define RISCV_ISA_EXT_ZCF		79
> +#define RISCV_ISA_EXT_ZCMOP		80
>
> #define RISCV_ISA_EXT_XLINUXENVCFG	127
>
> diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
> index 09dee071274d..f1450cd7231e 100644
> --- a/arch/riscv/kernel/cpufeature.c
> +++ b/arch/riscv/kernel/cpufeature.c
> @@ -265,6 +265,7 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
> 	__RISCV_ISA_EXT_DATA(zcb, RISCV_ISA_EXT_ZCB),
> 	__RISCV_ISA_EXT_DATA(zcd, RISCV_ISA_EXT_ZCD),
> 	__RISCV_ISA_EXT_DATA(zcf, RISCV_ISA_EXT_ZCF),
> +	__RISCV_ISA_EXT_DATA(zcmop, RISCV_ISA_EXT_ZCMOP),

As per spec zcmop is dependent on zca. So perhaps below ?

__RISCV_ISA_EXT_SUPERSET(zicboz, RISCV_ISA_EXT_ZCMOP, RISCV_ISA_EXT_ZCA)


> 	__RISCV_ISA_EXT_DATA(zba, RISCV_ISA_EXT_ZBA),
> 	__RISCV_ISA_EXT_DATA(zbb, RISCV_ISA_EXT_ZBB),
> 	__RISCV_ISA_EXT_DATA(zbc, RISCV_ISA_EXT_ZBC),
> --
> 2.43.0