linux-kernel - Re: [RFC PATCH v4 2/5] dt-bindings: riscv: Add Svadu Entry

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Date: Wed, 29 May 2024 17:33:45 +0800
From: Yong-Xuan Wang <yongxuan.wang@...ive.com>
To: Conor Dooley <conor@...nel.org>
Cc: linux-riscv@...ts.infradead.org, kvm-riscv@...ts.infradead.org, 
	kvm@...r.kernel.org, greentime.hu@...ive.com, vincent.chen@...ive.com, 
	cleger@...osinc.com, alex@...ti.fr, 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>, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v4 2/5] dt-bindings: riscv: Add Svadu Entry

Hi Conor,

On Mon, May 27, 2024 at 11:09 PM Conor Dooley <conor@...nel.org> wrote:
>
> On Fri, May 24, 2024 at 06:33:02PM +0800, Yong-Xuan Wang wrote:
> > Add an entry for the Svadu extension to the riscv,isa-extensions property.
> >
> > Signed-off-by: Yong-Xuan Wang <yongxuan.wang@...ive.com>
> > Acked-by: Conor Dooley <conor.dooley@...rochip.com>
> > Reviewed-by: Andrew Jones <ajones@...tanamicro.com>
>
> I'm going to un-ack this, not because you did something wrong per se,
> but because there's some discussion on the OpenSBI list about what is
> and what is not backwards compatible and how an OS should interpret
> svade and svadu:
> https://lists.infradead.org/pipermail/opensbi/2024-May/006949.html
>
> Thanks,
> Conor.
>

ok. I will remove it in the next version.

Regards,
Yong-Xuan

> > ---
> >  Documentation/devicetree/bindings/riscv/extensions.yaml | 6 ++++++
> >  1 file changed, 6 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/riscv/extensions.yaml b/Documentation/devicetree/bindings/riscv/extensions.yaml
> > index 468c646247aa..598a5841920f 100644
> > --- a/Documentation/devicetree/bindings/riscv/extensions.yaml
> > +++ b/Documentation/devicetree/bindings/riscv/extensions.yaml
> > @@ -153,6 +153,12 @@ properties:
> >              ratified at commit 3f9ed34 ("Add ability to manually trigger
> >              workflow. (#2)") of riscv-time-compare.
> >
> > +        - const: svadu
> > +          description: |
> > +            The standard Svadu supervisor-level extension for hardware updating
> > +            of PTE A/D bits as ratified at commit c1abccf ("Merge pull request
> > +            #25 from ved-rivos/ratified") of riscv-svadu.
> > +
> >          - const: svinval
> >            description:
> >              The standard Svinval supervisor-level extension for fine-grained
> > --
> > 2.17.1
> >