On 06/02/2025 08:23, Atish Patra wrote:
> Ssccfg (‘Ss’ for Privileged architecture and Supervisor-level
> extension, ‘ccfg’ for Counter Configuration) provides access to
> delegated counters and new supervisor-level state.
Hi Atish,
The spec seems to primarly use Smcdeleg rather than Ssccfg. This commits
adds both but only mention Ssccfg in the commit title/description. Maybe
it could be nice to mention both as well.
Thanks,
Clément
>
> This patch just enables the definitions and enable parsing.
>
> Signed-off-by: Atish Patra <atishp@xxxxxxxxxxxx>
> ---
> arch/riscv/include/asm/hwcap.h | 2 ++
> arch/riscv/kernel/cpufeature.c | 2 ++
> 2 files changed, 4 insertions(+)
>
> diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h
> index b4eddcb57842..fa5e01bcb990 100644
> --- a/arch/riscv/include/asm/hwcap.h
> +++ b/arch/riscv/include/asm/hwcap.h
> @@ -103,6 +103,8 @@
> #define RISCV_ISA_EXT_SSCSRIND 94
> #define RISCV_ISA_EXT_SMCSRIND 95
> #define RISCV_ISA_EXT_SMCNTRPMF 96
> +#define RISCV_ISA_EXT_SSCCFG 97
> +#define RISCV_ISA_EXT_SMCDELEG 98
>
> #define RISCV_ISA_EXT_XLINUXENVCFG 127
>
> diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
> index 8f225c9c3055..3cb208d4913e 100644
> --- a/arch/riscv/kernel/cpufeature.c
> +++ b/arch/riscv/kernel/cpufeature.c
> @@ -390,12 +390,14 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
> __RISCV_ISA_EXT_BUNDLE(zvksg, riscv_zvksg_bundled_exts),
> __RISCV_ISA_EXT_DATA(zvkt, RISCV_ISA_EXT_ZVKT),
> __RISCV_ISA_EXT_DATA(smaia, RISCV_ISA_EXT_SMAIA),
> + __RISCV_ISA_EXT_DATA(smcdeleg, RISCV_ISA_EXT_SMCDELEG),
> __RISCV_ISA_EXT_DATA(smcntrpmf, RISCV_ISA_EXT_SMCNTRPMF),
> __RISCV_ISA_EXT_DATA(smcsrind, RISCV_ISA_EXT_SMCSRIND),
> __RISCV_ISA_EXT_DATA(smmpm, RISCV_ISA_EXT_SMMPM),
> __RISCV_ISA_EXT_SUPERSET(smnpm, RISCV_ISA_EXT_SMNPM, riscv_xlinuxenvcfg_exts),
> __RISCV_ISA_EXT_DATA(smstateen, RISCV_ISA_EXT_SMSTATEEN),
> __RISCV_ISA_EXT_DATA(ssaia, RISCV_ISA_EXT_SSAIA),
> + __RISCV_ISA_EXT_DATA(ssccfg, RISCV_ISA_EXT_SSCCFG),
> __RISCV_ISA_EXT_DATA(sscofpmf, RISCV_ISA_EXT_SSCOFPMF),
> __RISCV_ISA_EXT_DATA(sscsrind, RISCV_ISA_EXT_SSCSRIND),
> __RISCV_ISA_EXT_SUPERSET(ssnpm, RISCV_ISA_EXT_SSNPM, riscv_xlinuxenvcfg_exts),
>
