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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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