tree 0a69cbfb66f2b30d707f24861baf3399d77c350b
parent cda4b7d3a5b1dcbc0d8e7bad52134347798e9047
author Jesse Barnes <jbarnes@virtuousgeek.org> 1278606166 -0700
committer Eric Anholt <eric@anholt.net> 1280717937 -0700

drm/agp/i915: trim stolen space to 32M

Some BIOSes will claim a large chunk of stolen space.  Unless we
reclaim it, our aperture for remapping buffer objects will be
constrained.  So clamp the stolen space to 32M and ignore the rest.

Fixes https://bugzilla.kernel.org/show_bug.cgi?id=15469 among others.

Adding the ignored stolen memory back into the general pool using the
memory hotplug code is left as an exercise for the reader.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Simon Farnsworth <simon.farnsworth@onelan.com>
Tested-by: Artem S. Tashkinov <t.artem@mailcity.com>
Signed-off-by: Eric Anholt <eric@anholt.net>