On Thu, 2001-11-22 at 12:03, [EMAIL PROTECTED] wrote:
> >> Well, if we are supposed to flush the CPU write buffer, then yes.
> >
> >mb() doesn't do that?
> 
> mb() is a lot more expensive, and I'm not completely sure how it
> behaves regarding main memory accessed by UniNorth via AGP. It works
> for SMP barriers, but knowing how buggy UniNorth can be with AGP,
> I prefer the safe way. 

Alternatively, would reading back work on other architectures? A single
implementation would be much more beautiful IMHO. :)


-- 
Earthling Michel D�nzer (MrCooper)/ Debian GNU/Linux (powerpc) developer
XFree86 and DRI project member   /  CS student, Free Software enthusiast

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