> Does this mean I have to compile every single binary to support the
> type of virtual memory I am using,

Nearly, at least all those that use libkvm eg., ps, w, fstat, ipcs,
netstat, nfsstat, systat, vmstat, ccdconfig, dmesg, savecore, eeprom,
iostat, kgmon, pstat, slstats, trpt, trsp

> I certainly hope this won't requre a complete rebuild, since I have
> yet to run a successful make build.

What happened?

> IIRC this kernel was compiled without UVM, it certainly looks this way from 
> the config file.

If you have UVM in the kernel, you will also want UVM=1 in
/etc/mk.conf

Cheers,

Patrick