On Mon, Jan 13, 2025 at 07:29:39PM +0800, yunhui cui wrote:
Hi drew,
On Mon, Jan 13, 2025 at 5:07 PM Andrew Jones ajones@ventanamicro.com wrote:
On Mon, Jan 13, 2025 at 04:36:34PM +0800, Yunhui Cui wrote:
Expose Zicbom through hwprobe and also provide a key to extract its respective block size.
Signed-off-by: Yunhui Cui cuiyunhui@bytedance.com
Documentation/arch/riscv/hwprobe.rst | 6 ++++++ arch/riscv/include/asm/hwprobe.h | 2 +- arch/riscv/include/uapi/asm/hwprobe.h | 2 ++ arch/riscv/kernel/sys_hwprobe.c | 6 ++++++ 4 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/Documentation/arch/riscv/hwprobe.rst b/Documentation/arch/riscv/hwprobe.rst index 955fbcd19ce9..7a47cbdbcf8e 100644 --- a/Documentation/arch/riscv/hwprobe.rst +++ b/Documentation/arch/riscv/hwprobe.rst @@ -94,6 +94,9 @@ The following keys are defined:
- :c:macro:`RISCV_HWPROBE_EXT_ZICBOZ`: The Zicboz extension is supported, as ratified in commit 3dd606f ("Create cmobase-v1.0.pdf") of riscv-CMOs.
- :c:macro:`RISCV_HWPROBE_EXT_ZICBOM`: The Zicbom extension is supported, as
ratified in commit 3dd606f ("Create cmobase-v1.0.pdf") of riscv-CMOs.This should come after RISCV_HWPROBE_EXT_SUPM since this document has the defines sorted in the order in which they are introduced (although I personally wouldn't mind if we ordered them alphabetically instead)
OK
- :c:macro:`RISCV_HWPROBE_EXT_ZBC` The Zbc extension is supported, as defined in version 1.0 of the Bit-Manipulation ISA extensions.
@@ -273,6 +276,9 @@ The following keys are defined:
- :c:macro:`RISCV_HWPROBE_KEY_ZICBOZ_BLOCK_SIZE`: An unsigned int which represents the size of the Zicboz block in bytes.
+* :c:macro:`RISCV_HWPROBE_KEY_ZICBOM_BLOCK_SIZE`: An unsigned int which
- represents the size of the Zicbom block in bytes.
Should be moved below RISCV_HWPROBE_KEY_TIME_CSR_FREQ
Why should it be moved below RISCV_HWPROBE_KEY_TIME_CSR_FREQ?
Oh, right. It should be below RISCV_HWPROBE_KEY_MISALIGNED_VECTOR_PERF for the same reason as above (order of introduction).
Thanks, drew