<br><div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">> So here's my questions then. If APIC routes the IRQs to 1-15 for real<br>> world use....can you safely have two devices on, say, 14? APIC will
<br>> assign one to maybe 23 and one to 20. But are they really both on 15<br>> with a potential for conflict?<br>The conflict only happens if your OS is not APIC aware or buggy<br>hardware. In fact 15, is usually used for the secondary IDE port. The
<br>reason APIC exists is to support SMP and the plethora of new devices<br>that are present on any modern motherboard. On my nforce motherboard<br>with IO-APIC, lscpi -vb will show lots of devices using IRQ 15. But,<br>
I've never seen IRQ misses on any one of them. The same goes for our<br>production systems running Pentium D or Xeon 51x0.</blockquote><div><br>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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