[PATCH v2 1/3] docs: riscv: Clarify risc-v hwprobe RISCV_HWPROBE_MISALIGNED_* docs.
Yangyu Chen
cyy at cyyself.name
Thu May 23 20:35:57 PDT 2024
From: enh <enh at google.com>
These only tell you about scalar accesses, not vector accesses.
Signed-off-by: Elliott Hughes <enh at google.com>
Reviewed-by: Charlie Jenkins <charlie at rivosinc.com>
Signed-off-by: Yangyu Chen <cyy at cyyself.name>
---
Documentation/arch/riscv/hwprobe.rst | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/Documentation/arch/riscv/hwprobe.rst b/Documentation/arch/riscv/hwprobe.rst
index 204cd4433af5..d720712e9734 100644
--- a/Documentation/arch/riscv/hwprobe.rst
+++ b/Documentation/arch/riscv/hwprobe.rst
@@ -196,21 +196,21 @@ The following keys are defined:
information about the selected set of processors.
* :c:macro:`RISCV_HWPROBE_MISALIGNED_UNKNOWN`: The performance of misaligned
- accesses is unknown.
+ scalar accesses is unknown.
- * :c:macro:`RISCV_HWPROBE_MISALIGNED_EMULATED`: Misaligned accesses are
+ * :c:macro:`RISCV_HWPROBE_MISALIGNED_EMULATED`: Misaligned scalar accesses are
emulated via software, either in or below the kernel. These accesses are
always extremely slow.
- * :c:macro:`RISCV_HWPROBE_MISALIGNED_SLOW`: Misaligned accesses are slower
- than equivalent byte accesses. Misaligned accesses may be supported
+ * :c:macro:`RISCV_HWPROBE_MISALIGNED_SLOW`: Misaligned scalar accesses are
+ slower than equivalent byte accesses. Misaligned accesses may be supported
directly in hardware, or trapped and emulated by software.
- * :c:macro:`RISCV_HWPROBE_MISALIGNED_FAST`: Misaligned accesses are faster
- than equivalent byte accesses.
+ * :c:macro:`RISCV_HWPROBE_MISALIGNED_FAST`: Misaligned scalar accesses are
+ faster than equivalent byte accesses.
- * :c:macro:`RISCV_HWPROBE_MISALIGNED_UNSUPPORTED`: Misaligned accesses are
- not supported at all and will generate a misaligned address fault.
+ * :c:macro:`RISCV_HWPROBE_MISALIGNED_UNSUPPORTED`: Misaligned scalar accesses
+ are not supported at all and will generate a misaligned address fault.
* :c:macro:`RISCV_HWPROBE_KEY_ZICBOZ_BLOCK_SIZE`: An unsigned int which
represents the size of the Zicboz block in bytes.
--
2.45.1
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