> > Another strategy you could use is to always access user pmaps via a 
> > linear PTE array (recursively mapped like the Alpha VPT), and set up an 
> > "APTEbase" for accessing non-current pmaps (like i386 does), 

The potential pitfall here is VPT/AVPT are subject to ASID magic.  It's _the_
intent of the original R3000 designer.

Toru Nishimura/ALKYL Technology