Messages in this thread | | | Date | Mon, 23 May 2005 00:41:21 +0200 | From | Jesper Juhl <> | Subject | Re: spurious 8259A interrupt: IRQ7 |
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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
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