On Fri, May 17, 2024 at 04:52:43PM +0200, Clément Léger wrote:
> Export Zimop ISA extension through hwprobe.
>
> Signed-off-by: Clément Léger <cleger@xxxxxxxxxxxx>
> ---
> Documentation/arch/riscv/hwprobe.rst | 4 ++++
> arch/riscv/include/uapi/asm/hwprobe.h | 1 +
> arch/riscv/kernel/sys_hwprobe.c | 1 +
> 3 files changed, 6 insertions(+)
>
> diff --git a/Documentation/arch/riscv/hwprobe.rst b/Documentation/arch/riscv/hwprobe.rst
> index 204cd4433af5..48be38e0b788 100644
> --- a/Documentation/arch/riscv/hwprobe.rst
> +++ b/Documentation/arch/riscv/hwprobe.rst
> @@ -192,6 +192,10 @@ The following keys are defined:
> supported as defined in the RISC-V ISA manual starting from commit
> d8ab5c78c207 ("Zihintpause is ratified").
>
> + * :c:macro:`RISCV_HWPROBE_EXT_ZIMOP`: The Zimop May-Be-Operations extension is
> + supported as defined in the RISC-V ISA manual starting from commit
> + 58220614a5f ("Zimop is ratified/1.0").
> +
> * :c:macro:`RISCV_HWPROBE_KEY_CPUPERF_0`: A bitmask that contains performance
> information about the selected set of processors.
>
> diff --git a/arch/riscv/include/uapi/asm/hwprobe.h b/arch/riscv/include/uapi/asm/hwprobe.h
> index 31c570cbd1c5..3b16a12204b1 100644
> --- a/arch/riscv/include/uapi/asm/hwprobe.h
> +++ b/arch/riscv/include/uapi/asm/hwprobe.h
> @@ -60,6 +60,7 @@ struct riscv_hwprobe {
> #define RISCV_HWPROBE_EXT_ZACAS (1ULL << 34)
> #define RISCV_HWPROBE_EXT_ZICOND (1ULL << 35)
> #define RISCV_HWPROBE_EXT_ZIHINTPAUSE (1ULL << 36)
> +#define RISCV_HWPROBE_EXT_ZIMOP (1ULL << 37)
> #define RISCV_HWPROBE_KEY_CPUPERF_0 5
> #define RISCV_HWPROBE_MISALIGNED_UNKNOWN (0 << 0)
> #define RISCV_HWPROBE_MISALIGNED_EMULATED (1 << 0)
> diff --git a/arch/riscv/kernel/sys_hwprobe.c b/arch/riscv/kernel/sys_hwprobe.c
> index 969ef3d59dbe..fc6f4238f0b3 100644
> --- a/arch/riscv/kernel/sys_hwprobe.c
> +++ b/arch/riscv/kernel/sys_hwprobe.c
> @@ -112,6 +112,7 @@ static void hwprobe_isa_ext0(struct riscv_hwprobe *pair,
> EXT_KEY(ZACAS);
> EXT_KEY(ZICOND);
> EXT_KEY(ZIHINTPAUSE);
> + EXT_KEY(ZIMOP);
>
> if (has_vector()) {
> EXT_KEY(ZVBB);
> --
> 2.43.0
>
>
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Reviewed-by: Charlie Jenkins <charlie@xxxxxxxxxxxx>
