Re: [PATCH v2 1/3] dt-bindings: riscv: Add Worlds ISA extensions - Yu-Chien Peter Lin

From: Yu-Chien Peter Lin <peter.lin@sifive.com>
To: Conor Dooley <conor@kernel.org>
Cc: devicetree@vger.kernel.org, linux-riscv@lists.infradead.org,
	linux-kernel@vger.kernel.org, robh@kernel.org,
	krzk+dt@kernel.org, conor+dt@kernel.org, pjw@kernel.org,
	palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.fr,
	samuel.holland@sifive.com, dlan@kernel.org,
	dfustini@oss.tenstorrent.com, michal.simek@amd.com,
	junhui.liu@pigmoral.tech, darshan.prajapati@einfochips.com,
	akpm@linux-foundation.org, zhangchunyan@iscas.ac.cn,
	luxu.kernel@bytedance.com, pincheng.plct@isrc.iscas.ac.cn,
	nick.hu@sifive.com, jim.shu@sifive.com, zong.li@sifive.com,
	greentime.hu@sifive.com, robin.randhawa@sifive.com,
	scott@riscstar.com, dave.patel@riscstar.com,
	raymond.mao@riscstar.com, anup@brainfault.org,
	pawandeep.oza@oss.qualcomm.com
Subject: Re: [PATCH v2 1/3] dt-bindings: riscv: Add Worlds ISA extensions
Date: Tue, 11 Aug 2026 16:24:52 +0800	[thread overview]
Message-ID: <anrcVIoupzPVA74B@plin-1878> (raw)
In-Reply-To: <20260810-penpal-aluminum-772319e5fc10@spud>

On Mon, Aug 10, 2026 at 05:25:08PM +0100, Conor Dooley wrote:
> On Thu, Jul 30, 2026 at 12:39:06AM +0800, Yu-Chien Peter Lin wrote:
> > Add DT bindings for five RISC-V Worlds ISA extensions
> > that implement World ID tagging for hardware-enforced
> > context isolation. Also, add checks for extension
> > dependency requirements.
> > 
> > Signed-off-by: Yu-Chien Peter Lin <peter.lin@sifive.com>
> > ---
> >  .../devicetree/bindings/riscv/extensions.yaml | 53 +++++++++++++++++++
> >  1 file changed, 53 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/riscv/extensions.yaml b/Documentation/devicetree/bindings/riscv/extensions.yaml
> > index 2b0a8a93bb21..7a57191a0293 100644
> > --- a/Documentation/devicetree/bindings/riscv/extensions.yaml
> > +++ b/Documentation/devicetree/bindings/riscv/extensions.yaml
> > @@ -193,12 +193,35 @@ properties:
> >              ratified at commit d70011dde6c2 ("Update to ratified state")
> >              of riscv-j-extension.
> >  
> > +        - const: smlwid
> > +          description: |
> > +            The standard Smlwid extension for M-mode control of lower
> > +            privilege World ID via the mlwid CSR as ratified at commit
> > +            TBD ("TBD") of riscv-worlds.

Also, I will follow alphabetical order in the next version.

Regards,
Peter Lin