Hi Chris,
> All pinning must be done prior to i915_request_create, to avoid
> timeline->mutex inversions.
>
> Here we slightly abuse the context_barrier_task stages to utilise the
> 'skip' decision as an opportunity to acquire the pin on the new ppgtt.
> Consider it s/skip/prepare/. At the
Quoting Andi Shyti (2019-12-06 23:31:26)
> Hi Chris,
>
> > All pinning must be done prior to i915_request_create, to avoid
> > timeline->mutex inversions.
> >
> > Here we slightly abuse the context_barrier_task stages to utilise the
> > 'skip' decision as an opportunity to acquire the pin on the
