Maybe I'm going the wrong way about it, on sparc64 web page is says:
   
   "NetBSD/sparc64 supports both 32-bit and 64-bit kernels. A 32-bit kernel 
   runs all NetBSD/sparc binaries"
   
   So I guess the question would be: what's the best and correct way to 
   build 32-bit kernel for sparc64 architecture and what's the best way to 
   integrate it with 32-bit userland? Anyone tried this before?


i'm sending this mail from such a box.  my home server has always
been a 32 bit sparc system.  when i upgraded from an SS5 to a U1
i broke the raid1 mirror that the system was installed on, installed
bootblk and ofwboot on the detached side, plus a new kernel, pulled
the disk out and put it in the U1.  when i was happy it was OK, i
put the other disk in the U1 and raidframe re-synced them.  at one
point i had to go back to the SS5 and used the same process ..

it is now a U10/440 but still 32 bit system.  just build a sparc
release and use GENERIC_SUN4U kernel instead...


.mrg.