[PATCH v2 3/4] docs: riscv: Document hwprobe for Zicbop

[Andrew Jones]

On Thu, Oct 09, 2025 at 09:41:53PM +0800, Yao Zihong wrote:
> Update hwprobe.rst to include documentation of the new
> :c:macro:`RISCV_HWPROBE_EXT_ZICBOP` and
> :c:macro:`RISCV_HWPROBE_KEY_ZICBOP_BLOCK_SIZE`, following the same
> style as the Zicbom and Zicboz entries.
> 
> The extension bit records support for the Zicbop extension, and
> the block size key reports the block size in bytes.
> 
> Signed-off-by: Yao Zihong <zihong.plct at isrc.iscas.ac.cn>
> ---
>  Documentation/arch/riscv/hwprobe.rst | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/arch/riscv/hwprobe.rst b/Documentation/arch/riscv/hwprobe.rst
> index 2f449c9b15bd..3b9c9d7e1409 100644
> --- a/Documentation/arch/riscv/hwprobe.rst
> +++ b/Documentation/arch/riscv/hwprobe.rst
> @@ -275,6 +275,9 @@ The following keys are defined:
>         ratified in commit 49f49c842ff9 ("Update to Rafified state") of
>         riscv-zabha.
>  
> +  * :c:macro:`RISCV_HWPROBE_EXT_ZICBOP`: The Zicbop extension is supported, as
> +       ratified in commit 3dd606f ("Create cmobase-v1.0.pdf") of riscv-CMOs.
> +
>  * :c:macro:`RISCV_HWPROBE_KEY_CPUPERF_0`: Deprecated.  Returns similar values to
>       :c:macro:`RISCV_HWPROBE_KEY_MISALIGNED_SCALAR_PERF`, but the key was
>       mistakenly classified as a bitmask rather than a value.
> @@ -369,4 +372,7 @@ The following keys are defined:
>  
>      * :c:macro:`RISCV_HWPROBE_VENDOR_EXT_XSFVFWMACCQQQ`: The Xsfvfwmaccqqq
>          vendor extension is supported in version 1.0 of Matrix Multiply Accumulate
> -	Instruction Extensions Specification.
> \ No newline at end of file
> +	Instruction Extensions Specification.
> +
> +* :c:macro:`RISCV_HWPROBE_KEY_ZICBOP_BLOCK_SIZE`: An unsigned int which
> +  represents the size of the Zicbop block in bytes.
> \ No newline at end of file

Please ensure this file has a newline so the last line doesn't have
to change every time we add new keys.

Thanks,
drew