2.5.20 -- mpparse.c:1123: `mp_ioapic_routing' undeclared [ ... on 2.5.21]

Hmm.. 2.5.21 and the bug is still there....

Well, here's why it happens:
the mp_ioapic_routing structure is if-deffed for IO_APIC, while it's extensively being used in mp_parse_prt() which is if-deffed for ACPI_PCI only. Therefore, it ends up being undefined when we have checked on ACPI and LOCAL_APIC, and off IOAPIC.

How to fix it?
Umm, I do not know.
I'm a newbie...
I was hoping somebody else would fix it, but that's not happening. The ifdef statements have to be set up correctly..

I am still curious as to why this file is even being compiled.... it seems to contain only multiprocessor stuff....
But it's compiled for everybody that says yes to LOCAL_APIC, including non-smp boxes....