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    SubjectRe: spurious 8259A interrupt: IRQ7
    On 4/14/05, Bjorn Helgaas <bjorn.helgaas@hp.com> wrote:
    > On Thu, 2005-04-14 at 16:56 -0400, Lee Revell wrote:
    > > Is the VIA IRQ fixup related to the "spurious interrupts" messages in
    > > any way? Googling the 2.4 threads on the issue gave me the impression
    > > that it's related to broken hardware. I think excessive disk activity
    > > might trigger it.
    >
    > If you need the VIA IRQ fixup and don't have it, I would expect
    > some interrupt to be routed to the wrong IRQ. That might give
    > you a "spurious interrupt" on the wrong IRQ, but your device would
    > probably just not work at all.
    >

    For what it's worth I'll chime in with my own info on this subject.

    I also see the
    spurious 8259A interrupt: IRQ7.
    messages from time to time. Actually I got one just a little while ago :
    $ dmesg | grep spurious
    [18994.222451] spurious 8259A interrupt: IRQ7.
    The system seems to be in good shape - it has never caused me any
    actual trouble.

    As for the via irq fixup I see this :
    $ dmesg | grep -i fixup
    [ 74.629393] PCI: Via PIC IRQ fixup for 0000:00:09.0, from 255 to 3

    The hardware is a ASUS A7M266 mobo with a AMD Athlon (t-bird) 1.4GHz CPU.

    The kernel is 2.6.12-rc4-mm2 :
    $ uname -a
    Linux dragon 2.6.12-rc4-mm2 #2 Mon May 16 18:14:13 CEST 2005 i686
    unknown unknown GNU/Linux

    I've seen some references to APIC for this issue, so here are the APIC
    related settings in my .config :

    juhl@dragon:~/download/kernel/linux-2.6.12-rc4-mm2$ grep -i APIC .config
    CONFIG_X86_GOOD_APIC=y
    # CONFIG_X86_UP_APIC is not set


    --
    Jesper Juhl <jesper.juhl@gmail.com>
    Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html
    Plain text mails only, please http://www.expita.com/nomime.html
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