[LAD] APIC, IRQ's, and realtime

[Lee Revell]

On 24 Jul 2007 15:07:26 -0000, arisstotle.52613058 at bloglines.com
<arisstotle.52613058 at bloglines.com> wrote:
> I've been trying to get a kernel built that will run smoothly, but this is
> the problem I keep running into, I compile the kernel with SMP processor support,
> because my processor is a dual core (duh right?) but as some may know, this
> automatically builds in APIC support. This then leads to unruly IRQ assignments,
> in my case, a quick cat /proc/interrupts will almost allways show my soundcard
> being shared with a usb port. of of course, to tease me even more, no assignment
> on irq 5, i've tried the whole hop-scotch game with the pci slots, nothing
> works.

IRQ assignment is usually hard wired - aka you can't change it.

Possibly booting with "noapic" could help.

Lee