Re: [PATCH v2 11/13] riscv: hwprobe: Document thead vendor extensions and xtheadvector extension
From: Evan Green <hidden>
Date: 2024-06-11 15:59:15
Also in:
linux-doc, linux-kselftest, linux-riscv, linux-sunxi, lkml
On Mon, Jun 10, 2024 at 3:57 PM Charlie Jenkins [off-list ref] wrote:
quoted hunk ↗ jump to hunk
Document support for thead vendor extensions using the key RISCV_HWPROBE_KEY_VENDOR_EXT_THEAD_0 and xtheadvector extension using the key RISCV_HWPROBE_VENDOR_EXT_XTHEADVECTOR. Signed-off-by: Charlie Jenkins <redacted> Reviewed-by: Evan Green <redacted> --- Documentation/arch/riscv/hwprobe.rst | 10 ++++++++++ 1 file changed, 10 insertions(+)diff --git a/Documentation/arch/riscv/hwprobe.rst b/Documentation/arch/riscv/hwprobe.rst index 204cd4433af5..9c0ef8c57228 100644 --- a/Documentation/arch/riscv/hwprobe.rst +++ b/Documentation/arch/riscv/hwprobe.rst@@ -214,3 +214,13 @@ 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_VENDOR_EXT_THEAD_0`: A bitmask containing the
Our recent snafoo with CPUPERF_0 popped into my memory when reading this. Does this work properly with the WHICH_CPUS flag? Specifically, we need hwprobe_key_is_bitmask() to return true for this key since it's a bitmask.