From: Dave Airlie <airlied@gmail.com>
To: "Christian König" <christian.koenig@amd.com>
Cc: "Joel Fernandes" <joelagnelf@nvidia.com>,
linux-kernel@vger.kernel.org,
"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
"Maxime Ripard" <mripard@kernel.org>,
"Thomas Zimmermann" <tzimmermann@suse.de>,
"Simona Vetter" <simona@ffwll.ch>,
"Jonathan Corbet" <corbet@lwn.net>,
"Alex Deucher" <alexander.deucher@amd.com>,
"Jani Nikula" <jani.nikula@linux.intel.com>,
"Joonas Lahtinen" <joonas.lahtinen@linux.intel.com>,
"Rodrigo Vivi" <rodrigo.vivi@intel.com>,
"Tvrtko Ursulin" <tursulin@ursulin.net>,
"Huang Rui" <ray.huang@amd.com>,
"Matthew Auld" <matthew.auld@intel.com>,
"Matthew Brost" <matthew.brost@intel.com>,
"Lucas De Marchi" <lucas.demarchi@intel.com>,
"Thomas Hellström" <thomas.hellstrom@linux.intel.com>,
"Helge Deller" <deller@gmx.de>,
"Danilo Krummrich" <dakr@kernel.org>,
"Alice Ryhl" <aliceryhl@google.com>,
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"Alex Gaynor" <alex.gaynor@gmail.com>,
"Boqun Feng" <boqun.feng@gmail.com>,
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"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Benno Lossin" <lossin@kernel.org>,
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"Trevor Gross" <tmgross@umich.edu>,
"John Hubbard" <jhubbard@nvidia.com>,
"Alistair Popple" <apopple@nvidia.com>,
"Timur Tabi" <ttabi@nvidia.com>, "Edwin Peer" <epeer@nvidia.com>,
"Alexandre Courbot" <acourbot@nvidia.com>,
nouveau@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
rust-for-linux@vger.kernel.org, linux-doc@vger.kernel.org,
amd-gfx@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,
intel-xe@lists.freedesktop.org, linux-fbdev@vger.kernel.org
Subject: Re: [PATCH] gpu: Move DRM buddy allocator one level up
Date: Tue, 25 Nov 2025 17:49:16 +1000 [thread overview]
Message-ID: <CAPM=9twe3xcVBgrNCT+1_pGECPL-ry_aA2dxBwbKVeai4+S7AQ@mail.gmail.com> (raw)
In-Reply-To: <f73e4536-ec89-4625-96d4-6fa42018e4e4@amd.com>
On Tue, 25 Nov 2025 at 17:45, Christian König <christian.koenig@amd.com> wrote:
>
> On 11/25/25 00:44, 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 bissectability, however no functional
> > change is intended. Verified by running K-UNIT tests and build tested
> > various configurations.
>
> Well such a change needs to be part of the patch set which actually starts to use it outside of drivers/gpu/drm.
I'm not sure it really makes sense yet to force that for this, since
the next patch would be just adding rust bindings to it, then a patch
to nova-core would be needed to use it, I'd rather not merge something
like this via the rust or nova trees as it breaks the principle of
least surprise.
Maybe this + rust bindings might be enough to justify it, but it
should be reviewable as a standalone idea.
Dave.
next prev parent reply other threads:[~2025-11-25 7:49 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-24 23:44 [PATCH] gpu: Move DRM buddy allocator one level up Joel Fernandes
2025-11-24 23:46 ` Joel Fernandes
2025-11-25 7:45 ` Christian König
2025-11-25 7:49 ` Dave Airlie [this message]
2025-11-25 7:54 ` Christian König
2025-11-25 7:59 ` John Hubbard
2025-11-25 8:10 ` Christian König
2025-11-25 9:08 ` Dave Airlie
2025-11-25 9:14 ` Christian König
2025-11-25 20:17 ` Dave Airlie
2025-11-26 7:44 ` Zhi Wang
2025-11-26 15:17 ` Joel Fernandes
2025-11-25 12:36 ` Zhi Wang
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