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Sat, 24 Jan 2026 21:48:37 -0800 (PST) From: Guodong Xu Date: Sun, 25 Jan 2026 09:36:08 +0800 Subject: [PATCH v2 3/3] riscv: cpufeature: Clarify ISA spec version for canonical order Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260125-supm-ext-id-v2-3-1e3b9714c860@riscstar.com> References: <20260125-supm-ext-id-v2-0-1e3b9714c860@riscstar.com> In-Reply-To: <20260125-supm-ext-id-v2-0-1e3b9714c860@riscstar.com> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Samuel Holland , Heinrich Schuchardt , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Evan Green , Andrew Jones , Conor Dooley Cc: Paul Walmsley , Conor Dooley , devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Guodong Xu X-Mailer: b4 0.14.3 Specify that chapter 27 refers to version 20191213 of the RISC-V ISA Unprivileged Architecture. The chapter numbering differs across specification versions - for example, in version 20250508, the ISA Extension Naming Conventions is chapter 36, not chapter 27. Historical versions of the RISC-V specification can be found via Link [1]. Acked-by: Conor Dooley Link: https://riscv.org/specifications/ratified/ [1] Fixes: 99e2266f2460 ("RISC-V: clarify ISA string ordering rules in cpu.c") Signed-off-by: Guodong Xu --- v2: Add Acked-by from Conor. Update the Fixes tag to point to the original commit who added the description. --- arch/riscv/kernel/cpufeature.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c index e1f7ad882289..63ad6393b2c6 100644 --- a/arch/riscv/kernel/cpufeature.c +++ b/arch/riscv/kernel/cpufeature.c @@ -482,7 +482,8 @@ static const unsigned int riscv_supm_exts[] =3D { =20 /* * The canonical order of ISA extension names in the ISA string is defined= in - * chapter 27 of the unprivileged specification. + * Chapter 27 of the RISC-V Instruction Set Manual Volume I Unprivileged I= SA + * (Document Version 20191213). * * Ordinarily, for in-kernel data structures, this order is unimportant but * isa_ext_arr defines the order of the ISA string in /proc/cpuinfo. --=20 2.43.0