linux-kernel - Re: [PATCH v2 5/5] dt-bindings: riscv: document vector crypto requirements

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Message-ID: <20241025-defile-blaming-12fc1e3a62e0@spud>
Date: Fri, 25 Oct 2024 17:53:49 +0100
From: Conor Dooley <conor@...nel.org>
To: Eric Biggers <ebiggers@...nel.org>
Cc: linux-riscv@...ts.infradead.org,
	Conor Dooley <conor.dooley@...rochip.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Clément Léger <cleger@...osinc.com>,
	Andy Chiu <andybnac@...il.com>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: Re: [PATCH v2 5/5] dt-bindings: riscv: document vector crypto
 requirements

On Thu, Oct 24, 2024 at 07:42:24PM -0700, Eric Biggers wrote:
> On Thu, Oct 24, 2024 at 07:24:11PM -0700, Eric Biggers wrote:
> > On Thu, Oct 24, 2024 at 01:34:33PM +0100, Conor Dooley wrote:
> > > From: Conor Dooley <conor.dooley@...rochip.com>
> > > 
> > > Section 35.2. Extensions Overview of [1] says:
> > > | The Zvknhb and Zvbc Vector Crypto Extensions --and accordingly the composite extensions Zvkn and
> > > | Zvks-- (sic) require a Zve64x base, or application ("V") base Vector Extension.
> > > | All of the other Vector Crypto Extensions can be built on any embedded (Zve*) or application ("V") base
> > > | Vector Extension
> > > 
> > > Apply these rules in the binding, so that invalid combinations can be
> > > avoided.
> > 
> > It looks like that part of the spec is wrong, though.  The Zvknhb and Zvbc are
> > correct, but the list of the composite extensions that at least one of them is
> > included in is: Zvkn, Zvknc, Zvkng, Zvksc.
> > 
> 
> I am attempting to fix this in
> https://github.com/riscv/riscv-isa-manual/pull/1697

Looks like at least one person agrees with you, but I'll wait til that's
merged before submitting another version. Thanks for reporting it.

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