340fbd8ca1
Before purging our pages (as opposed to copying back the contents from
the GPU), make sure that there is not an exposed CPU mmapping through
which the user can inspect the results.
Regression from
commit 5537252b6b
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date: Tue Mar 25 13:23:06 2014 +0000
drm/i915: Invalidate our pages under memory pressure
Testcase: igt/gem_mmap/new-object
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=79005
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Guo Jinxian <jinxianx.guo@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>