[Intel-gfx] [PATCH 3/6] drm/i915/execlists: Force single submission for sentinels

[Chris Wilson]

Quoting Chris Wilson (2020-03-19 15:31:41)
> Quoting Chris Wilson (2020-03-19 15:21:41)
> > First though, I have to answer the question of how I broke persistence.
> 
> Fwiw, it's the await_active update. Time to double check whether it is
> flushing the barrier on demand.

And it's because I didn't take the lingering preallocated barriers into
account.
-Chris