Re: [Intel-gfx] [PATCH] drm/i915: Flush ggtt writes through the old fenced vma before changing fences

2018-01-31 Thread Lahtinen, Joonas
On Tue, 2018-01-30 at 16:44 +, Chris Wilson wrote: > This is a precautionary measure as I have no evidence to suggest we've > hit a bug here (I was hoping this might explain gdg's odd behaviour, but > alas), but given that we have a function to flush the ggtt writes it > seems prudent to use

[Intel-gfx] [PATCH] drm/i915: Flush ggtt writes through the old fenced vma before changing fences

2018-01-30 Thread Chris Wilson
This is a precautionary measure as I have no evidence to suggest we've hit a bug here (I was hoping this might explain gdg's odd behaviour, but alas), but given that we have a function to flush the ggtt writes it seems prudent to use it prior to changing the fence register. Due to the intrinsic