drm/i915: Access to snooped system memory through the GTT is incoherent

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We ignore all the user requests to handle flushing to the GTT domain if
the user requests such on a snoopable bo, and as such access through the
GTT to such pages remains incoherent. The specs even warn that such
behaviour is undefined - a strong reason never to do so.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Chris Wilson 2012-12-16 12:43:36 +00:00 • committed by Daniel Vetter

parent 3f8c65d604

commit eb119bd612

1 changed files with 6 additions and 0 deletions

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drivers/gpu/drm/i915/i915_gem.c

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