Re: Multiple IRQs for PCI interrupt

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Re: Multiple IRQs for PCI interrupt
\ John Baldwin (13 Jul 2007)

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Subject:	Re: Multiple IRQs for PCI interrupt
Group:	Freebsd-current
From:	John Baldwin
Date:	13 Jul 2007

On Thursday 31 May 2007 10:14:15 am Larry Baird wrote:
> Can anybody shed any light on the following panic :
> Multiple IRQs for PCI interrupt 0.31.INTA: 18 and 16
>
> Looking at the code this comes from mptable_pci_route_interrupt_handler()
> in i386/i386/mptable.c. This message comes when I try to put 7.0 on
> a box that was running 6.2. Comparing 6.2 and 7.0, it looks like I
> might have the same problem if I turned on INVARIANTS in 6.2.
>
> For now I have ifdefed out this check, but I would really like to
> understand the issue.

Your BIOS is telling the OS that a PCI interrupt is hooked up to two different
places. You really should be using ACPI. Barring that you can use explicit
hints for the pci0.31.INTA IRQ or attempt to get your BIOS manufacturer to
fix their BIOS.

--
John Baldwin
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