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SubjectRe: Linux 2.2.5 and PCI 3Com Vortex
Date
> Reading this message I also have a question about this IO-Apic system. I've set
> up a Linux system on a Dell Poweredge 2300 Dual P3-450 system with the PERC S/2
> raidcontroller, the system runs fine with RH5.2 and kernel 2.2.3 but the IRQ
> numbers seem odd:
>
> CPU0 CPU1
> 0: 5410252 5404197 IO-APIC-edge timer
> 1: 0 8 IO-APIC-edge keyboard
> 2: 0 0 XT-PIC cascade
> 8: 1 0 IO-APIC-edge rtc
> 12: 0 0 IO-APIC-edge PS/2 Mouse
> 13: 1 0 XT-PIC fpu
> 16: 4442 4490 IO-APIC-level aic7xxx, aic7xxx
> 18: 206824 206795 IO-APIC-level megaraid
> 20: 1318743 1318680 IO-APIC-level Intel EtherExpress Pro 10/100
> Ethernet
>
> Still, everything works OK, should I be concerned about these numbers ?

They are fine. When you are running with the IO-Apic the back compatibility
hack of reusing ISA IRQ lines for PCI is removed. Thus IRQ 16+ are your
PCI slots


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