Re: [PATH 0/4] [RFC] Support virtual DRM

[Simon Ser]

On Monday, June 21st, 2021 at 08:43, Tomohito Esaki <etom@xxxxxxxxxx> wrote:

> Virtual DRM splits the overlay planes of a display controller into multiple
> virtual devices to allow each plane to be accessed by each process.
> This makes it possible to overlay images output from multiple processes on a
> display. For example, one process displays the camera image without compositor
> while another process overlays the UI.

Updating the KMS state from multiple processes doesn't sound like a
good idea. This opens up synchronization and global device limits
issues.

Are you aware of DRM leasing?