[RFC PATCH 1/5] riscv: Add Smsdid and Smmpt hart extensions

[Ranbir Singh]

On Wed, Jul 22, 2026 at 9:06 AM Rahul Pathak
<rahul.pathak at oss.qualcomm.com> wrote:
>
> Add hart extension identifiers for the RISC-V Smsdid (supervisor
> domain ID) and Smmpt (supervisor domain memory protection) extensions.
>
> Signed-off-by: Rahul Pathak <rahul.pathak at oss.qualcomm.com>
> ---
>  include/sbi/sbi_hart.h | 5 ++++-
>  lib/sbi/sbi_hart.c     | 2 ++
>  2 files changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/include/sbi/sbi_hart.h b/include/sbi/sbi_hart.h
> index 543393bb..38aacd70 100644
> --- a/include/sbi/sbi_hart.h
> +++ b/include/sbi/sbi_hart.h
> @@ -95,8 +95,11 @@ enum sbi_hart_extensions {
>         SBI_HART_EXT_F,
>         /** Hart has D extension */
>         SBI_HART_EXT_D,
> +       /** Hart has SMMTT - SMSDID extension */
> +       SBI_HART_EXT_SMSDID,
> +       /** Hart has SMMTT - SMMPT extension */
> +       SBI_HART_EXT_SMMPT,
>
> -       /** Maximum index of Hart extension */

This seems an undesired removal and should be retained.

>         SBI_HART_EXT_MAX,
>  };
>
> diff --git a/lib/sbi/sbi_hart.c b/lib/sbi/sbi_hart.c
> index bee88557..4261fea8 100644
> --- a/lib/sbi/sbi_hart.c
> +++ b/lib/sbi/sbi_hart.c
> @@ -360,6 +360,8 @@ const struct sbi_hart_ext_data sbi_hart_ext[] = {
>         __SBI_HART_EXT_DATA(v, SBI_HART_EXT_V),
>         __SBI_HART_EXT_DATA(f, SBI_HART_EXT_F),
>         __SBI_HART_EXT_DATA(d, SBI_HART_EXT_D),
> +       __SBI_HART_EXT_DATA(smsdid, SBI_HART_EXT_SMSDID),
> +       __SBI_HART_EXT_DATA(smmpt,  SBI_HART_EXT_SMMPT),
>  };
>
>  _Static_assert(SBI_HART_EXT_MAX == array_size(sbi_hart_ext),
> --
> 2.51.0
>
>
> --
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Otherwise, LGTM

Reviewed-by: ranbir.singh at oss.qualcomm.com