Re: further IO-APIC oddities

Martin J. Bligh (Martin.Bligh@us.ibm.com)
Thu, 08 Aug 2002 10:56:28 -0700


> Strange thing happened when I booted the latest x86 discontigmem stuff.
> The stuff where the IO-APIC ID's showed up as zeroed out went away,
> and io_apic.c just bitched about the MPC table entries because it
> doesn't realize that physid's of IO-APIC's mean squat on this box.
>
> *AND* whatever was scribbling over that table & zeroing it out went
> away. That bug is reproducible on more garden variety machines too.
> If someone who knows how to read the IO-APIC map dumps is around,
> I've included the boot log below.

I can kind of read them if I really squint, but what are you trying to see / fix?

> ... from another run, with a printk in apic.c re: mapping the IO-APICs
> turned on:
>
> mapped IOAPIC to ffffd000 (fe800000)
> mapped IOAPIC to ffffc000 (fe801000)
> mapped IOAPIC to ffffb000 (fe840000)
> mapped IOAPIC to ffffa000 (fe841000)
> mapped IOAPIC to ffff9000 (fe880000)
> mapped IOAPIC to ffff8000 (fe881000)
> mapped IOAPIC to ffff7000 (fe8c0000)
> mapped IOAPIC to ffff6000 (fe8c1000)

Looks fine to me ... ?

M.

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