tree ed969423484e055c04bdb8b0a49097c8fdd1ca98
parent 6a660f06e8120977b25d30ace354c8f9dc3aff2a
author Francisco Jerez <currojerez@riseup.net> 1266615015 +1000
committer Dave Airlie <airlied@redhat.com> 1266615015 +1000

drm/ttm: fix caching problem on non-PAT systems.

http://bugzilla.kernel.org/show_bug.cgi?id=15328

This fixes a serious regression on AGP/non-PAT systems, where
pages were ending up in the wrong state and slowing down the
whole system.

[airlied: taken this from the bug as the other option is to revert
the change which caused it].

Tested-by: John W. Linville (in bug).
Signed-off-by: Dave Airlie <airlied@redhat.com>