On Sat, 18 Oct 2008, Jon Smirl wrote: > > Is it possible to use a segment register to map the whole aperture on > 32b?
No. Segment registers don't extend the virtual address space, they can only limit visibility into the one single 32-bit one. IOW, segment registers don't actually extend addressing in any way, they only limit it. There's a reason why people don't use them (except as a strange base register for things like per-cpu or per-thread variables, and that is not to extend the address space, but to avoid wasting precious _useful_ registers on that). Linus ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel