nmi-watchdog not working on S2466

Hi,

does anybody ever got the nmi-watchdog working on a Tyan Tiger MPX S2466?
My problems are:
- booting nmi_watchdog=1 results in an error "nmi appears to be stuck" 
- booting nmi_watchdog=2 is ok, gives an NMI count in /proc/interrupts
  but is otherwise non-functional. Doing
  	iopl(3);while (1) asm("cli");
  locks the machine forever (not really: just another watchdog hits
  after some time)

I used several 2.6.x-kernels - vanilla and -mm - all with the same
results.  Any ideas?  What information is needed to track the problem?

-jo

-- 
-rw-r--r--  1 jo users 63 2004-10-27 17:34 /home/jo/.signature