[Intel-gfx] [PATCH v3 3/4] drm/i915: Perform TLB invalidation on all GTs during suspend/resume

[Andi Shyti]

Hi Jani,

> > Consider multi-gt support when cancelling all tlb invalidations on
> > suspend, and when submitting tlb invalidations on resume.
> >
> > Suggested-by: Tvrtko Ursulin <tvrtko.ursulin at linux.intel.com>
> > Signed-off-by: Fei Yang <fei.yang at intel.com>
> > Signed-off-by: Jonathan Cavitt <jonathan.cavitt at intel.com>
> > CC: John Harrison <John.C.Harrison at Intel.com>
> 
> I guess I'm wondering why the top level suspend hook needs to iterate
> gts instead of some lower level thing. We should aim to reduce
> gem/gt/display details from the top level.

I'm not sure I am understanding the question.

The TLB invalidation details are kept under the GT. But when
suspend is called, then the GT invalidation has to be triggered
by the top levels for each GT. Right?

Thanks,
Andi