> 
> > > (yes, i know...on machines with 64 bit addressing you could still
> > > swap)
> >
> >even on machines with 32 bit addressing you could swap ... not all
> >that that memory is going to mapped into one process...
> 
> of course not, no.  but how can you can address more than 4gb on a 32
> bit machine?  really big page tables?

No, separate page tables per process.  The kernel can't map in all of
RAM but it can dish it out to a bunch of different processes.  (SPARC
1000/2000 machines have been shipping with 6-8GB RAM for ages.)  

=========================================================================
Eduardo Horvath				eeh@netbsd.org
	"I need to find a pithy new quote." -- me