rudolf wrote:
> Hi,
> 
> I have a problem with interrupts with NetBSD 4.0_RC2 GENERIC.MP kernel. 
> There seems to be everything ok with plain GENERIC or GENERIC_DIAGNOSTIC 
> kernel. The machine is Sun Fire X2200 M2 with one dual-core Opteron.

FWIW, today's current and yamt-x86pmap exhibit the same (one processor 
core busy with interrupts):

current:
m2# uname -a
NetBSD m2.eq.cz 4.99.33 NetBSD 4.99.33 (GENERIC.MP) #0: Mon Oct 15 
22:53:27 CEST 2007 
root@bludicka.crlf.cz:/mnt/B/obj/sys/arch/i386/compile/GENERIC.MP i386
m2# sysctl kern.cp_time
kern.cp_time: user = 309, nice = 0, sys = 655, intr = 7878, idle = 6961
m2#

yamt-x86pmap:
m2#  sysctl kern.cp_time
kern.cp_time: user = 295, nice = 0, sys = 652, intr = 13611, idle = 13118
m2#

r.