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From: Yangyu Chen <cyy@cyyself.name>
To: linux-riscv@lists.infradead.org
Cc: "Elliott Hughes" <enh@google.com>,
	"Charlie Jenkins" <charlie@rivosinc.com>,
	"Jonathan Corbet" <corbet@lwn.net>,
	"Paul Walmsley" <paul.walmsley@sifive.com>,
	"Palmer Dabbelt" <palmer@dabbelt.com>,
	"Evan Green" <evan@rivosinc.com>,
	"Clément Léger" <cleger@rivosinc.com>,
	"Conor Dooley" <conor.dooley@microchip.com>,
	"Andrew Jones" <ajones@ventanamicro.com>,
	linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
	"Yangyu Chen" <cyy@cyyself.name>
Subject: [PATCH v2 1/3] docs: riscv: Clarify risc-v hwprobe RISCV_HWPROBE_MISALIGNED_* docs.
Date: Fri, 24 May 2024 11:35:57 +0800	[thread overview]
Message-ID: <tencent_8BC6BC8798373AF1AD09AE68D338FEE0620A@qq.com> (raw)
In-Reply-To: <tencent_1E3506F09D08066B8F3BAEE136C4F887540A@qq.com>

From: enh <enh@google.com>

These only tell you about scalar accesses, not vector accesses.

Signed-off-by: Elliott Hughes <enh@google.com>
Reviewed-by: Charlie Jenkins <charlie@rivosinc.com>
Signed-off-by: Yangyu Chen <cyy@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


  reply	other threads:[~2024-05-24  3:36 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-05-24  3:34 [PATCH v2 0/3] docs: riscv: Some clarifies on hwprobe misaligned performance Yangyu Chen
2024-05-24  3:35 ` Yangyu Chen [this message]
2024-05-24  3:35 ` [PATCH v2 2/3] docs: riscv: hwprobe: Clarify misaligned keys are values not bitmasks Yangyu Chen
2024-05-24  3:35 ` [PATCH v2 3/3] RISC-V: hwprobe: not treat KEY_CPUPERF_0 as bitmask Yangyu Chen
2024-05-29 18:33   ` Evan Green
2024-06-26 14:43     ` Palmer Dabbelt

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