[Intel-gfx] [PATCH 06/23] drm/i915/execlists: Use coherent writes into the context image

2018-09-04 Thread Chris Wilson
That we use a WB mapping for updating the RING_TAIL register inside the context image even on !llc machines has been a source of consternation for every reader. It appears to work on bsw+, but it may just have been that we have been incredibly bad at detecting the errors. v2: With extra

[Intel-gfx] [PATCH 06/23] drm/i915/execlists: Use coherent writes into the context image

2018-08-16 Thread Chris Wilson
That we use a WB mapping for updating the RING_TAIL register inside the context image even on !llc machines has been a source of consternation for every reader. It appears to work on bsw+, but it may just have been that we have been incredibly bad at detecting the errors. v2: With extra