> So here's my questions then. If APIC routes the IRQs to 1-15 for real > world use....can you safely have two devices on, say, 14? APIC will > assign one to maybe 23 and one to 20. But are they really both on 15 > with a potential for conflict? The conflict only happens if your OS is not APIC aware or buggy hardware. In fact 15, is usually used for the secondary IDE port. The reason APIC exists is to support SMP and the plethora of new devices that are present on any modern motherboard. On my nforce motherboard with IO-APIC, lscpi -vb will show lots of devices using IRQ 15. But, I've never seen IRQ misses on any one of them. The same goes for our production systems running Pentium D or Xeon 51x0.
I ment are they both on 14, not 15. (Sorry not feeling good the last few days and kinda working in a cloud). Ok, so in theory, even though the BIOS is saying "You guys are on IRQ 6" or "You guys are on IRQ 13".... as long as lscpi -v and cat /proc/interrupts shows the devices not sharing and IO-APIC I should be ok?
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