[Intel-gfx] [PATCH 2/2] drm/i915: Segregate memory domains in the GTT using coloring

[Daniel Vetter]

On Tue, Jul 10, 2012 at 11:15:24AM +0100, Chris Wilson wrote:
> Several functions of the GPU have the restriction that differing memory
> domains cannot be placed next to each other (as the GPU may prefetch
> beyond the end of one domain and hang as it crosses into the other
> domain). We use the facility of the drm_mm to mark ranges with a
> particular color that corresponds to the cache attributes of those pages
> in order to prevent allocating adjacent blocks of differing memory
> types.
> 
> v2: Rebase ontop of drm_mm coloring v2.
> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
-- 
Daniel Vetter
Mail: daniel at ffwll.ch
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