spurrious interrupt problem

John Baldwin jhb at FreeBSD.org
Thu Sep 2 12:44:29 PDT 2004

On Wednesday 01 September 2004 08:33 pm, Andrew Gallatin wrote:
> John Baldwin writes:
>  > On Friday 27 August 2004 06:47 pm, Nate Lawson wrote:
>  > > I don't see anything wrong with your acpi pci link routing.  In fact,
>  > > all your irqs are hardwired meaning acpi shouldn't touch them.  This
>  > > must be something with ioapic.  (BTW, acpi is non-optional on amd64).
>  >
>  > Talk to phk at .  He had an opteron motherboard that had a busted BIOS that
>  > left the links between PCI IRQs that are used in atpic mode setup even
>  > when in apic mode so that you get 'alias' IRQs in apic mode.  In his
>  > case the vendor provided a BIOS update that fixed the issue.
> I had our onsite guy update the bios, but that ended up disabling USB.
> So its "fixed".. ;)

Ouch. :-P

John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org

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