> Can I use the same swap with netbsd and linux/ppc (monolithic)? Can I
> cross-compile, and how hard is it?

I'm not sure. Cross-compiling to NetBSD/mac68k is problematic. The
NetBSD linker and assembler have patches (to support shared libs)
which never made it back to the GNU maintainers, and we use an ancient
version of these tools. You basically have to compile the NetBSD versions
of these files (which needs the berkeley make program).

I've also not heard much about walking disks around.

Good luck!

Bill