linux-kernel - [RFC PATCH 1/9] dt-bindings: riscv: Add pointer masking ISA extensions

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Message-ID: <20240319215915.832127-2-samuel.holland@sifive.com>
Date: Tue, 19 Mar 2024 14:58:27 -0700
From: Samuel Holland <samuel.holland@...ive.com>
To: Palmer Dabbelt <palmer@...belt.com>,
	linux-riscv@...ts.infradead.org
Cc: devicetree@...r.kernel.org,
	Catalin Marinas <catalin.marinas@....com>,
	linux-kernel@...r.kernel.org,
	tech-j-ext@...ts.risc-v.org,
	Conor Dooley <conor@...nel.org>,
	kasan-dev@...glegroups.com,
	Evgenii Stepanov <eugenis@...gle.com>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Samuel Holland <samuel.holland@...ive.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Paul Walmsley <paul.walmsley@...ive.com>
Subject: [RFC PATCH 1/9] dt-bindings: riscv: Add pointer masking ISA extensions

The RISC-V Pointer Masking specification defines three extensions:
Smmpm, Smnpm, and Ssnpm. Document the behavior as of the current draft
of the specification, which is version 0.8.4.

Signed-off-by: Samuel Holland <samuel.holland@...ive.com>
---

 .../devicetree/bindings/riscv/extensions.yaml  | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/Documentation/devicetree/bindings/riscv/extensions.yaml b/Documentation/devicetree/bindings/riscv/extensions.yaml
index 63d81dc895e5..bb7d5d84f31f 100644
--- a/Documentation/devicetree/bindings/riscv/extensions.yaml
+++ b/Documentation/devicetree/bindings/riscv/extensions.yaml
@@ -128,6 +128,18 @@ properties:
             changes to interrupts as frozen at commit ccbddab ("Merge pull
             request #42 from riscv/jhauser-2023-RC4") of riscv-aia.
 
+        - const: smmpm
+          description: |
+            The standard Smmpm extension for M-mode pointer masking as defined
+            at commit a1e68469c60 ("Minor correction to pointer masking spec.")
+            of riscv-j-extension.
+
+        - const: smnpm
+          description: |
+            The standard Smnpm extension for next-mode pointer masking as defined
+            at commit a1e68469c60 ("Minor correction to pointer masking spec.")
+            of riscv-j-extension.
+
         - const: smstateen
           description: |
             The standard Smstateen extension for controlling access to CSRs
@@ -147,6 +159,12 @@ properties:
             and mode-based filtering as ratified at commit 01d1df0 ("Add ability
             to manually trigger workflow. (#2)") of riscv-count-overflow.
 
+        - const: ssnpm
+          description: |
+            The standard Ssnpm extension for next-mode pointer masking as defined
+            at commit a1e68469c60 ("Minor correction to pointer masking spec.")
+            of riscv-j-extension.
+
         - const: sstc
           description: |
             The standard Sstc supervisor-level extension for time compare as
-- 
2.43.1