K 10
svn:author
V 7
rnoland
K 8
svn:date
V 27
2010-04-22T18:21:25.566016Z
K 7
svn:log
V 377
Rework how drm maps are handled.

 * On 32 bit platforms we steal the upper 4 bits of the map handle
   to store a unique map id.
 * On 64 bit platforms we steal the upper 24 bits.

Resolves issues where the offsets that are handed to mmap may overlap the VRAM on some cards.

Tested on: radeon, intel, mga, and via.

This will break nouveau.  I will spin new patches shortly.

END