Messages in this thread |  | | Date | Fri, 21 Sep 2001 19:14:58 +0200 (CEST) | From | Luigi Genoni <> | Subject | Re: spurious interrupt with ac kernel but not with vanilla 2.4.9 |
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On Fri, 21 Sep 2001, Alan Cox wrote:
> > I noticed that on the abit kt7A MBs that i have, with via KT133A chipset, > > after i installed the kernel 2.4.9-ac10 (ac11 and 12 as well), > > at boot i get this message, > > > > Sep 21 11:52:11 DarkStar kernel: ice 00:0b.0 > > Sep 21 11:52:11 DarkStar kernel: spurious 8259A interrupt: IRQ7. > > immediatelly before scsi adaptec detection and inizzializzation. > > Thats indicating an IRQ appeared and vanished. IRQ 7 is the IRQ that happens > to occur for this. > > > I was thinking to an HW problem, but with vanilla 2.4.9 kernel I do not > > get this message, and the code in arch/i386/kernel/i8259.c that should > > detect this spurious interrup is just the same on those two kernels. > > Changes are related to X86_IO_APIC, and I think this is the reason why > > this spurious interrupt is detected, but I would like to know if i should > > think I have some HW problem going on that stardard kernels do not detect. > > The APIC only applies to multiprocessor boxes unless you are building with > uniprocessor apic support. Build a non SMP kernel without apic support > and let me know what that does
yes, i was using a non SMP kernel with both apic and io_apic support enabled.
actally:
with APIC support and without IO_APIC support
I do not get this message again, but I am so sorry, because my processor has integrated APIC support.
I just made another test on a dual Athlon 1200 Mhz per CPU on an MB with AMD chipset, and here this problem does not appear.
Thanx
Luigi
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