On Iau, 2004-05-06 at 20:57, Jon Smirl wrote: > Simple example, DRM starts GPU coprocessor running. VT swap happens. New user > stops coprocessor. VT swap back to DRM. Now DRM thinks it left the coprocessor > running but that's not true now. DRM and FB conflict when FB is using the > coprocessor for accelerated text.
FB already has mode switch context waits, so does DRM. And you don't want to break direct access to registers for most things because its a performance consideration of high importance. > Timesharing device drivers on the graphics > hardware at VT swap is a very broken design. Read Mark Kilgards SGI papers - they were doing context management at scheduling level.. ------------------------------------------------------- This SF.Net email is sponsored by Sleepycat Software Learn developer strategies Cisco, Motorola, Ericsson & Lucent use to deliver higher performing products faster, at low TCO. http://www.sleepycat.com/telcomwpreg.php?From=osdnemail3 -- _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
