System Vr2 vs. System Vr2v2

[Robert N. Berlinger]

Does anyone know what incompatibilities there will be between 
System Vr2 (swapping) and System Vr2v2 (paging) at the device 
driver level?  We are looking into several drivers, and would 
hate to have them all become obsolete if we upgrade to the paging 
version.  Thanks in advance...
-- 
Robert Berlinger
...{philabs,cucard,pegasus,ihnp4,rocky2}!aecom!naftoli