Revert "drm/i915: Kill GTT mappings when moving from GTT domain"
authorEric Anholt <eric@anholt.net>
Tue, 14 Jun 2011 23:43:09 +0000 (16:43 -0700)
committerKeith Packard <keithp@keithp.com>
Tue, 21 Jun 2011 18:11:02 +0000 (11:11 -0700)
commite92d03bff9a0d0bcbb812c9b1290ca96c9338d45
tree3f5ff85abc0d78717cb11249f9b340d90f714ad3
parentec6a890dfed7dd245beba5e5bcdfcffbd934c284
Revert "drm/i915: Kill GTT mappings when moving from GTT domain"

This reverts commit 4a684a4117abd756291969336af454e8a958802f.
Userland has always been required to set the object's domain to GTT
before using it through a GTT mapping, it's not something that the
kernel is supposed to enforce.  (The pagefault support is so that we
can handle multiple mappings without userland having to pin across
them, not so that userland can use GTT after GPU domains without
telling the kernel).

Fixes 19.2% +/- 0.8% (n=6) performance regression in cairo-gl
firefox-talos-gfx on my T420 latop.

Signed-off-by: Keith Packard <keithp@keithp.com>
drivers/gpu/drm/i915/i915_gem.c
drivers/gpu/drm/i915/i915_gem_execbuffer.c