RE: interrupts across PCI bridge(s) not handled
From: Charles Martin
Date: Mon Nov 03 2003 - 15:30:53 EST
> -----Original Message-----
> From: Linus Torvalds [mailto:torvalds@xxxxxxxx]
> Sent: Monday, November 03, 2003 1:23 PM
> To: Charles Martin
> Cc: linux-kernel@xxxxxxxxxxxxxxx; martinc@xxxxxxxxxxxx
> Subject: RE: interrupts across PCI bridge(s) not handled
> On Mon, 3 Nov 2003, Charles Martin wrote:
> > I enabled APIC_DEBUG, and here is the dmesg output.
> The MP tables mention IRQ's up to 51, but no further.
> But the PIRQ routing tables talk about irqs 92-95 for bus 6.
> It really looks like the IRQ routing entries are just broken. One
> potential fix is to enable ACPI, and hope that the ACPI irq
> routing isn't
> as broken as the PIRQ stuff.
> Other than that I don't see anything we can do. Anybody else?
I do notice that bus #6, which is the backplane extender,
has an APIC id of 0, but an APIC #0 was not enumerated. All other
buses get assigned to the identified APICs of 8, 9 and 10.
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