bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-02 13:32:40 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/virtio: Allow importing prime buffers when 3D is enabled

Browse Source 
This functionality was added for using a KMS-only virtgpu with a physical
(or SR-IOV) headless GPU in passthrough, but it should not be restricted
to KMS-only mode. It can be used with cross-domain to pass guest memfds
to the host compositor with zero copies (using udmabuf on both sides).

Drop the check for the absence of virgl_3d to allow for more use cases.

Fixes: ca77f27a26 ("drm/virtio: Import prime buffers from other devices as guest blobs")
Signed-off-by: Val Packett <val@invisiblethingslab.com>
Reviewed-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: https://patch.msgid.link/20251210154755.1119861-2-val@invisiblethingslab.com
This commit is contained in:
Val Packett
2025-12-10 12:39:23 -03:00
committed by Dmitry Osipenko
parent 40c1ccc1a3
commit df4dc947c4
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/virtio/virtgpu_prime.c
View File

@@ -312,7 +312,7 @@ struct drm_gem_object *virtgpu_gem_prime_import(struct drm_device *dev,
}
}
if (!vgdev->has_resource_blob || vgdev->has_virgl_3d)
if (!vgdev->has_resource_blob)
return drm_gem_prime_import(dev, buf);
bo = kzalloc(sizeof(*bo), GFP_KERNEL);