RFC: drm/virtio: Dummy virtio GPU

Gerd Hoffmann kraxel at redhat.com
Tue Feb 25 10:29:28 UTC 2020


On Mon, Feb 24, 2020 at 03:01:54PM -0800, Lepton Wu wrote:
> Hi,
> 
> I'd like to get comments on this before I polish it. This is a 
> simple way to get something similar with vkms but it heavily reuse
> the code provided by virtio-gpu. Please feel free to give me any
> feedbacks or comments.

No.

First, what is wrong with vkms?

Second, if you really want something simple with the minimal set of drm
features possible you can write a rather small but still self-contained
driver when using all the drm helpers (shmem, simple display pipe) we
have these days.  Copy cirrus, strip it down: drop modesetting code,
drop blit-from-shmem-to-vram code, drop pci probing.  Maybe add module
options for max/default video mode.  Done.

What is the use case btw?

cheers,
  Gerd



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