On Thu, 2008-10-23 at 14:24 -0700, Linus Torvalds wrote: > The whole point of that function has absolutely nothing to do with > highmem, and it *must* be useful on non-highmem configurations to be > appropriate. > > So I'd much rather create a new <linux/kmap.h> or something. Or just > expose this from to <asm/fixmap.h> or something. Let's not confuse > this > with highmem, even if the implementation _historically_ was due to > that.
Well, on powerpc, we just went (or rather, Kumar just went) through the oops of implementing fixmap and then kmap on top of it... just because we wanted kmap_atomic functionality on non-highmem platforms :-) (and the fixmap approach has some other interesting features). So yes, I agree. Typically very useful for any 32-bit processor with a memory mapped PCI Express config space since it's something like 256M of virtual space to map it all iirc. Cheers, Ben. ------------------------------------------------------------------------- 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
