[PATCH 5/5] drm/i915: Solve the GPU reset vs. modeset deadlocks with an rw_semaphore

[Daniel Vetter]

On Mon, Jul 03, 2017 at 12:30:48PM +0300, Ville Syrjälä wrote:
> I've pretty much decided that I'll be happy if I can solve this for
> future kernels. If someone else wants to try and cook up some kind
> of simple regression fix I don't have any real objections.

Imo fixing the regression isn't the job of the display side, since display
isn't the one that broke the reset contract. Well apart from not syncing
with pending non-blocking atomic modeset commits, which we could fix
easily by dropping DRIVER_ATOMIC from gen2-4. But I'm still trying to
figure out why Chris thinks this isn't a gem regression ...
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch