On 03/31/2015 01:32 PM, Chris Wilson wrote:
On Tue, Mar 31, 2015 at 01:23:10PM +0100, Tvrtko Ursulin wrote:
From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Purpose of this tracking is to know when to flush the cache between the
CPU and the
non-coherent display engine. Previously to:
s/Previously/Prior/
commit 121920faf2ccce9aa66a7e2588415c9647b66104
Author: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Date: Mon Mar 23 11:10:37 2015 +0000
drm/i915/skl: Query display address through a wrapper
This worked by a mix of direct flag manipulation and checking for
existence of a pinned GGTT VMA.
With the introduction of rotated display mappings this approach is
no longer correct.
New simpler approach is to just keep this count over calls which pin and
unpin objects to and from display.
at the slight cost of extra space in every bo.
Is space is a concern, how about just a flag then? Counter kind of lost
its usefulness at the moment.
(Inspired and extracted code from a larger rework by Chris Wilson.)
v2: Remove the limit since it is not well defined.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Proof reading someone else's changelog is much simpler than coming up
with one from scratch.
Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Thanks!
Tvrtko
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