libdrm_amdgpu being forked and merged into Mesa

[Michel Dänzer]

On 2024-10-24 17:08, Marek Olšák wrote:
> We don't need to share the same VMID between ROCm and Mesa. We don't
> need to share the same driver FD between ROCm and Mesa either. It will
> be like having 2 different processes, and that should always work.

Per https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31756#note_2626236, does anything prevent the application from passing the same DRM file description (doesn't need to be the same *descriptor*) to separate drivers? (Not sure it can even pass a DRM fd to ROCm, surely can e.g. to radeonsi & AMDVLK though)

I guess one way to avoid this issue would be for Mesa to always use a different DRM file description internally, then it would have to share buffers with the DRM file description passed in by the application as needed though.


-- 
Earthling Michel Dänzer       \        GNOME / Xwayland / Mesa developer
https://redhat.com             \               Libre software enthusiast