linux-kernel - Re: [PATCH -next] gpu: Move DRM buddy allocator one level up

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Message-ID: <06ff773a-06bf-4d60-bd0a-75a0359ce41c@nvidia.com>
Date: Thu, 5 Feb 2026 20:06:26 -0500
From: Joel Fernandes <joelagnelf@...dia.com>
To: linux-kernel@...r.kernel.org
Cc: 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>, Danilo Krummrich <dakr@...nel.org>,
 Alice Ryhl <aliceryhl@...gle.com>, Miguel Ojeda <ojeda@...nel.org>,
 Alex Gaynor <alex.gaynor@...il.com>, Boqun Feng <boqun.feng@...il.com>,
 Gary Guo <gary@...yguo.net>, 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>,
 Alexey Ivanov <alexeyi@...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, rust-for-linux@...r.kernel.org,
 linux-doc@...r.kernel.org, amd-gfx@...ts.freedesktop.org,
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 linux-fbdev@...r.kernel.org
Subject: Re: [PATCH -next] gpu: Move DRM buddy allocator one level up



On 2/5/2026 7:34 PM, Joel Fernandes wrote:
> Move the DRM buddy allocator one level up so that it can be used by GPU
> drivers (example, nova-core) that have usecases other than DRM (such as
> VFIO vGPU support). Modify the API, structures and Kconfigs to use
> "gpu_buddy" terminology. Adapt the drivers and tests to use the new API.
> 
> The commit cannot be split due to bisectability, however no functional
> change is intended. Verified by running K-UNIT tests and build tested
> various configurations.
> 
> Signed-off-by: Joel Fernandes <joelagnelf@...dia.com>

I forgot to add Dave Airlie's review tag here from his other email. When you
apply, could you add it?

Or, let me know if I should resend it. Thanks.

--
Joel Fernandes