[Intel-gfx] [PATCH 0/7] Commit early to GuC

[Chris Wilson]

Quoting Daniele Ceraolo Spurio (2020-01-15 01:31:36)
> We currently wait until we attempt to load the GuC to confirm if we're
> in GuC mode or not, at which point a lot of the engine setup has already
> happened and needs to be updated for GuC submission. To allow us to get
> the setup done directly into GuC mode, we need to commit to using GuC
> as soon as possible.

I think this is the wrong direction; as I thought the goal was to allow
delayed loading of firmware, even going as far as allowing the system to
run a browser for the user to get the firmware first. I may be
completely wrong about that, but imho I never want to have to build
firmware images into the kernel.

The transition from execlists to guc could be just set-wedged; delete
old engines, build guc engines. [This should also work for guc -> guc.]
Throwing away context state is ugly, but simple enough.
-Chris