Just for kicks, I turned my IQ80321 Xscale board on and booted up a
-current kernel to multiuser without any problems.  I still have an old
userland on this machine so I haven't tried anything like running the
pthreads regression tests...

NetBSD 4.99.12 (IQ80321) #0: Wed Feb 21 12:22:27 EST 2007
        simonb@bigkev:/home/simonb/netbsd/src/sys/arch/evbarm/compile/IQ80321
total memory = 128 MB
avail memory = 119 MB
mainbus0 (root)
cpu0 at mainbus0: i80321 600MHz rev 2 (XScale core)
cpu0: DC enabled IC enabled WB enabled LABT branch prediction enabled
cpu0: 32KB/32B 32-way Instruction cache
cpu0: 32KB/32B 32-way write-back-locking Data cache
...
Wed Feb 21 12:26:45 EST 2007

NetBSD/evbarm (iq80321) (console)

login:  


Cheers,
Simon.