Hello all, These patches allow ATI's Radeon drivers (8.8.25) to work under the realtime-preempt 2.6.11-rc2-v0.7.37-01 Linux kernels. Be sure to configure tmpfs before using (see http://www.ati.com/support/infobase/4687.html). OpenGL works very well. Quake 3, bzflag, gltron all run solidly and smoothly! Exiting X Windows blanks screen until next reboot. There are still some compile time warnings that should be fixed. An OpenGL latency footprint / histogram and performance test suite should be developed. The open code parts of ATI's drivers need to be picked through for spinlocks, and cleaned up if possible. Lots of other work left to do, like a frame scheduler locked to page redraw interrupts, Xv support, a triple buffering API (next version of SDL?) Please send me any improvements. Thanks. John Gilbert jgilbert@biomail.ucsd.edu