linux-kernel - Re: [PATCH RFC 1/3] dt-bindings: riscv: Add Svukte entry

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Message-ID: <ZyE3zSNnc9qxUPly@debug.ba.rivosinc.com>
Date: Tue, 29 Oct 2024 12:30:21 -0700
From: Deepak Gupta <debug@...osinc.com>
To: Max Hsu <max.hsu@...ive.com>
Cc: Conor Dooley <conor@...nel.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>, Anup Patel <anup@...infault.org>,
	Atish Patra <atishp@...shpatra.org>,
	Palmer Dabbelt <palmer@...ive.com>, linux-riscv@...ts.infradead.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org, kvm-riscv@...ts.infradead.org,
	Samuel Holland <samuel.holland@...ive.com>
Subject: Re: [PATCH RFC 1/3] dt-bindings: riscv: Add Svukte entry

On Fri, Sep 20, 2024 at 03:39:03PM +0800, Max Hsu wrote:
>Add an entry for the Svukte extension to the riscv,isa-extensions
>property.
>
>Reviewed-by: Samuel Holland <samuel.holland@...ive.com>
>Signed-off-by: Max Hsu <max.hsu@...ive.com>
>---
> Documentation/devicetree/bindings/riscv/extensions.yaml | 7 +++++++
> 1 file changed, 7 insertions(+)
>
>diff --git a/Documentation/devicetree/bindings/riscv/extensions.yaml b/Documentation/devicetree/bindings/riscv/extensions.yaml
>index a06dbc6b4928958704855c8993291b036e3d1a63..df96aea5e53a70b0cb8905332464a42a264e56e6 100644
>--- a/Documentation/devicetree/bindings/riscv/extensions.yaml
>+++ b/Documentation/devicetree/bindings/riscv/extensions.yaml
>@@ -171,6 +171,13 @@ properties:
>             memory types as ratified in the 20191213 version of the privileged
>             ISA specification.
>
>+        - const: svukte
>+          description:
>+            The standard Svukte supervisor-level extensions for making user-mode
>+            accesses to supervisor memory raise page faults in constant time,
>+            mitigating attacks that attempt to discover the supervisor
>+            software's address-space layout, as PR#1564 of riscv-isa-manual.
>+


Reviewed-by: Deepak Gupta <debug@...osinc.com>
>
>