linux-kernel - Re: [PATCH -next v7 1/2] rust: clist: Add support to interface with C linked lists

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Message-Id: <DG800TDA6OXQ.275PMMS19F1EX@kernel.org>
Date: Fri, 06 Feb 2026 16:53:48 +0100
From: "Danilo Krummrich" <dakr@...nel.org>
To: "Gary Guo" <gary@...yguo.net>
Cc: "Joel Fernandes" <joelagnelf@...dia.com>,
 <linux-kernel@...r.kernel.org>, "Maarten Lankhorst"
 <maarten.lankhorst@...ux.intel.com>, "Maxime Ripard" <mripard@...nel.org>,
 "Thomas Zimmermann" <tzimmermann@...e.de>, "David Airlie"
 <airlied@...il.com>, "Simona Vetter" <simona@...ll.ch>, "Jonathan Corbet"
 <corbet@....net>, "Alex Deucher" <alexander.deucher@....com>,
 Christian König <christian.koenig@....com>, "Jani Nikula"
 <jani.nikula@...ux.intel.com>, "Joonas Lahtinen"
 <joonas.lahtinen@...ux.intel.com>, "Rodrigo Vivi" <rodrigo.vivi@...el.com>,
 "Tvrtko Ursulin" <tursulin@...ulin.net>, "Huang Rui" <ray.huang@....com>,
 "Matthew Auld" <matthew.auld@...el.com>, "Matthew Brost"
 <matthew.brost@...el.com>, "Lucas De Marchi" <lucas.demarchi@...el.com>,
 Thomas Hellström <thomas.hellstrom@...ux.intel.com>,
 "Helge Deller" <deller@....de>, "Alice Ryhl" <aliceryhl@...gle.com>,
 "Miguel Ojeda" <ojeda@...nel.org>, "Alex Gaynor" <alex.gaynor@...il.com>,
 "Boqun Feng" <boqun.feng@...il.com>, Björn Roy Baron
 <bjorn3_gh@...tonmail.com>, "Benno Lossin" <lossin@...nel.org>, "Andreas
 Hindborg" <a.hindborg@...nel.org>, "Trevor Gross" <tmgross@...ch.edu>,
 "John Hubbard" <jhubbard@...dia.com>, "Alistair Popple"
 <apopple@...dia.com>, "Timur Tabi" <ttabi@...dia.com>, "Edwin Peer"
 <epeer@...dia.com>, "Alexandre Courbot" <acourbot@...dia.com>, "Andrea
 Righi" <arighi@...dia.com>, "Andy Ritger" <aritger@...dia.com>, "Zhi Wang"
 <zhiw@...dia.com>, "Balbir Singh" <balbirs@...dia.com>, "Philipp Stanner"
 <phasta@...nel.org>, "Elle Rhumsaa" <elle@...thered-steel.dev>, "Daniel
 Almeida" <daniel.almeida@...labora.com>, <joel@...lfernandes.org>,
 <nouveau@...ts.freedesktop.org>, <dri-devel@...ts.freedesktop.org>,
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 <amd-gfx@...ts.freedesktop.org>, <intel-gfx@...ts.freedesktop.org>,
 <intel-xe@...ts.freedesktop.org>, <linux-fbdev@...r.kernel.org>
Subject: Re: [PATCH -next v7 1/2] rust: clist: Add support to interface with
 C linked lists

On Fri Feb 6, 2026 at 4:25 PM CET, Gary Guo wrote:
> On Fri Feb 6, 2026 at 12:41 AM GMT, Joel Fernandes wrote:
>> diff --git a/drivers/gpu/Kconfig b/drivers/gpu/Kconfig
>> index 22dd29cd50b5..2c3dec070645 100644
>> --- a/drivers/gpu/Kconfig
>> +++ b/drivers/gpu/Kconfig
>> @@ -1,7 +1,14 @@
>>  # SPDX-License-Identifier: GPL-2.0
>>  
>> +config RUST_CLIST
>> +	bool
>> +	depends on RUST
>> +	help
>> +	  Rust abstraction for interfacing with C linked lists.
>
> I am not sure if we need extra config entry. This is fully generic so shouldn't
> generate any code unless there is an user.

I also don't think we need a Kconfig for this.

In any case, it shouln't be in drivers/gpu/Kconfig.

>> +
>>  config GPU_BUDDY
>>  	bool
>> +	select RUST_CLIST if RUST

If we will have a Kconfig for this, this belongs in the GPU buddy patch.

>>  	help
>>  	  A page based buddy allocator for GPU memory.