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drm/i915: Kill GTT mappings when moving from GTT domain
In order to force a page-fault on a GTT mapping after we start using it from the GPU and so enforce correct CPU/GPU synchronisation, we need to invalidate the mapping. Pointed out by Owain G. Ainsworth. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Chris Wilson
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Oct 28, 2010
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