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Tue, 09 Jun 2026 06:01:12 -0700 (PDT) From: Yunhui Cui To: akpm@linux-foundation.org, alex@ghiti.fr, andrew+kernel@donnellan.id.au, aou@eecs.berkeley.edu, apatel@ventanamicro.com, apopple@nvidia.com, atishp@rivosinc.com, baolin.wang@linux.alibaba.com, cleger@rivosinc.com, conor+dt@kernel.org, cuiyunhui@bytedance.com, debug@rivosinc.com, devicetree@vger.kernel.org, guodong@riscstar.com, hui.wang@canonical.com, krzk+dt@kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, liu.xuemei1@zte.com.cn, namcao@linutronix.de, nick.hu@sifive.com, palmer@dabbelt.com, pincheng.plct@isrc.iscas.ac.cn, pjw@kernel.org, qingwei.hu@bytedance.com, ritesh.list@gmail.com, rmclure@linux.ibm.com, robh@kernel.org, wangruikang@iscas.ac.cn, zhangchunyan@iscas.ac.cn, zong.li@sifive.com Subject: [PATCH v3 1/3] dt-bindings: riscv: clarify Svadu boot-time behavior Date: Tue, 9 Jun 2026 21:00:18 +0800 Message-Id: <20260609130021.99899-2-cuiyunhui@bytedance.com> X-Mailer: git-send-email 2.39.2 (Apple Git-143) In-Reply-To: <20260609130021.99899-1-cuiyunhui@bytedance.com> References: <20260609130021.99899-1-cuiyunhui@bytedance.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Clarify that systems which advertise only Svadu have hardware PTE A/D updating enabled at boot, while systems advertising both Svade and Svadu must enable Svadu explicitly with SBI FWFT. Signed-off-by: Yunhui Cui Reviewed-by: Qingwei Hu --- Documentation/devicetree/bindings/riscv/extensions.yaml | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/riscv/extensions.yaml b/Documentation/devicetree/bindings/riscv/extensions.yaml index 2b0a8a93bb214..b09888e9988de 100644 --- a/Documentation/devicetree/bindings/riscv/extensions.yaml +++ b/Documentation/devicetree/bindings/riscv/extensions.yaml @@ -294,10 +294,10 @@ properties: of the PTE A/D bits or page faults when they need updated. 2) Only Svade present in DT => Supervisor must assume Svade to be always enabled. - 3) Only Svadu present in DT => Supervisor must assume Svadu to be - always enabled. + 3) Only Svadu present in DT => Supervisor must assume Svadu is + enabled at boot. 4) Both Svade and Svadu present in DT => Supervisor must assume - Svadu turned-off at boot time. To use Svadu, supervisor must + Svadu is disabled at boot time. To use Svadu, supervisor must explicitly enable it using the SBI FWFT extension. - const: svadu -- 2.39.5