Messages in this thread |  | | | Date | Fri, 18 Jul 2008 09:51:02 +0200 | | From | "Vegard Nossum" <> | | Subject | Re: v2.6.26-rc9: ACPI PCI irq routing on NUMA? + early_ioremap trouble |
On Fri, Jul 18, 2008 at 2:47 AM, Maciej W. Rozycki <macro@linux-mips.org> wrote: >> Looks like APIC was misconfigured, which might explain IRQ routing weirdness? > > Here pin1 and pin2 have been correctly initialised, but apic1 and apic2 > are both set to -1. This is an "impossible scenario." Because of that > I/O APIC code actually pokes at random registers of the local APIC which > immediately precedes I/O APIC #0 in the fixmap. Results may be arbitrary. > >> Will try to provide the booting one later. Now zZz... > > Your system uses an MP table and there were quite a lot of changes in its > support code recently. A bug must have crept in. Please try the appended > patch and the "apic=debug" option for both cases and the resulting logs > may shed some light.
I have done this for the bad case: http://folk.uio.no/vegardno/linux/netconsole2.txt
(I added a warning for certain APIC errors as well. Not that it adds much in this particular case, but I think it would be good to have in mainline anyway, to highlight these error cases in the future...)
Vegard
-- "The animistic metaphor of the bug that maliciously sneaked in while the programmer was not looking is intellectually dishonest as it disguises that the error is the programmer's own creation." -- E. W. Dijkstra, EWD1036
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