diff options
| author | Yao Zihong <zihong.plct@isrc.iscas.ac.cn> | 2025-11-19 00:23:24 +0800 |
|---|---|---|
| committer | Paul Walmsley <pjw@kernel.org> | 2025-11-19 09:19:29 -0700 |
| commit | e0a504984a88a2f1c0131aca5115fd529fc9974a (patch) | |
| tree | 1ad6ff21e85e75c6a836d4667cf944e3ed68aaac /Documentation | |
| parent | ad1bb4b8525e497c95d48a2d3fd2e81fba4b5ad7 (diff) | |
riscv: hwprobe: Expose Zicbop extension and its block size
- Add `RISCV_HWPROBE_EXT_ZICBOP` to report the presence of the
Zicbop extension.
- Add `RISCV_HWPROBE_KEY_ZICBOP_BLOCK_SIZE` to expose the block
size (in bytes) when Zicbop is supported.
- Update hwprobe.rst to document the new extension bit and block
size key, following the existing Zicbom/Zicboz style.
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Yao Zihong <zihong.plct@isrc.iscas.ac.cn>
Link: https://patch.msgid.link/20251118162436.15485-2-zihong.plct@isrc.iscas.ac.cn
[pjw@kernel.org: updated to apply]
Signed-off-by: Paul Walmsley <pjw@kernel.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/arch/riscv/hwprobe.rst | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/arch/riscv/hwprobe.rst b/Documentation/arch/riscv/hwprobe.rst index 8b36eaa9d5d8..06c5280b728a 100644 --- a/Documentation/arch/riscv/hwprobe.rst +++ b/Documentation/arch/riscv/hwprobe.rst @@ -278,6 +278,9 @@ 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. @@ -373,3 +376,6 @@ 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. + +* :c:macro:`RISCV_HWPROBE_KEY_ZICBOP_BLOCK_SIZE`: An unsigned int which + represents the size of the Zicbop block in bytes. |