From: Zhi Wang <zhiw@nvidia.com>
To: Dave Airlie <airlied@gmail.com>
Cc: "Christian König" <christian.koenig@amd.com>,
"John Hubbard" <jhubbard@nvidia.com>,
"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>,
"Miguel Ojeda" <ojeda@kernel.org>,
"Alex Gaynor" <alex.gaynor@gmail.com>,
"Boqun Feng" <boqun.feng@gmail.com>,
"Gary Guo" <gary@garyguo.net>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Benno Lossin" <lossin@kernel.org>,
"Andreas Hindborg" <a.hindborg@kernel.org>,
"Trevor Gross" <tmgross@umich.edu>,
"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: Wed, 26 Nov 2025 09:44:12 +0200 [thread overview]
Message-ID: <20251126094412.23373c13.zhiw@nvidia.com> (raw)
In-Reply-To: <CAPM=9tx5neQ=TbmK+2eAO=O-XW_67VhOGO-791kqyVDJEpTA+w@mail.gmail.com>
On Wed, 26 Nov 2025 06:17:25 +1000
Dave Airlie <airlied@gmail.com> wrote:
> On Tue, 25 Nov 2025 at 19:15, Christian König <christian.koenig@amd.com>
> wrote:
> >
> > On 11/25/25 10:08, Dave Airlie wrote:
snip
> So far I haven't heard anything about needing dma-buf interactions at
> that level, and maybe Zhi has more insight into the future there.
>
For VFIO parts, the vendor VFIO driver relies on the core driver's support
to export the VM's framebuffer to the userspace either as type a)
VFIO_GFX_PLANE_TYPE_REGION, framebuffer as a region or b)
VFIO_GFX_PLANE_TYPE_DMABUF, framebuffer as a dmabuf, which is usually
backed by a GEM object.
NVIDIA vGPU uses VFIO_GFX_PLANE_TYPE_REGION, so dma-buf interactions
are not required.
> Dave.
next prev parent reply other threads:[~2025-11-26 7:44 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
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 [this message]
2025-11-26 15:17 ` Joel Fernandes
2025-11-25 12:36 ` Zhi Wang
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