irq cpu binding

[Adrian Chadd]

That's done deferred by the bus interrupt wiring. That's something
John's been looking into as part of the general NUMA work (and I'm
trying to debug right now, on dual-socket boxes with ixgbe. :-)

Look at bus_bind_intr() and the twisty path to intr_event_bind(), then
x86/x86/intr_machdep.c:intr_assign_cpu(), then intr_shuffle_cpus() at
boot, versus what happens via calls to pic_assign_cpu to setup the
wiring.



-adrian