[Intel-gfx] [PATCH] drm/i915: Add missing -EDEADLK path in execbuffer ggtt pinning.

[Maarten Lankhorst]

Op 29-01-2021 om 14:16 schreef Chris Wilson:
> Quoting Maarten Lankhorst (2021-01-29 13:11:37)
>> In reloc_iomap we swallow the -EDEADLK error, but this needs to
>> be returned for -EDEADLK handling. Add the missing check to
>> make bsw pass again.
> What lock? You already have the pages reserved, why are we not just using
> the earlier reservation.
> -Chris

We start taking locks on the vm ggtt objects, this is going to break with the object mm lock removal break. So easiest fix is to add missing -EDEADLK here.

Any pinning operation may fail with -EDEADLK, it's something we should always handle.

~Maarten