diff options
| author | Yunhui Cui <cuiyunhui@bytedance.com> | 2025-02-26 14:32:05 +0800 |
|---|---|---|
| committer | Alexandre Ghiti <alexghiti@rivosinc.com> | 2025-03-18 12:43:56 +0000 |
| commit | eb10039709402cc1fab1533a1ecc1a54c2152e68 (patch) | |
| tree | 7572d086d0782e40375a2c0ff26eb81cf5024022 /Documentation/arch | |
| parent | de70b532f91bbcfa9f4100f1a2cd62810c799239 (diff) | |
RISC-V: hwprobe: Expose Zicbom extension and its block size
Expose Zicbom through hwprobe and also provide a key to extract its
respective block size.
[ alex: Fix merge conflicts and hwprobe numbering ]
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
Signed-off-by: Yunhui Cui <cuiyunhui@bytedance.com>
Link: https://lore.kernel.org/r/20250226063206.71216-3-cuiyunhui@bytedance.com
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Diffstat (limited to 'Documentation/arch')
| -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 67ef406cdb67..2792f12e90ba 100644 --- a/Documentation/arch/riscv/hwprobe.rst +++ b/Documentation/arch/riscv/hwprobe.rst @@ -260,6 +260,9 @@ The following keys are defined: defined in the RISC-V ISA manual starting from commit 4dc23d6229de ("Added Chapter title to BF16"). + * :c:macro:`RISCV_HWPROBE_EXT_ZICBOM`: The Zicbom 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. @@ -321,3 +324,6 @@ The following keys are defined: * :c:macro:`RISCV_HWPROBE_VENDOR_EXT_XTHEADVECTOR`: The xtheadvector vendor extension is supported in the T-Head ISA extensions spec starting from commit a18c801634 ("Add T-Head VECTOR vendor extension. "). + +* :c:macro:`RISCV_HWPROBE_KEY_ZICBOM_BLOCK_SIZE`: An unsigned int which + represents the size of the Zicbom block in bytes. |