2002-04-29 17:17:00

by blitzkrieg

Subject: 2.5.11 SMP, APIC, build breaks

HI,
I was trying to compile 2.5.11, I noticed that if
# CONFIG_SMP is not set

and

# CONFIG_X86_LOCAL_APIC is not set
# CONFIG_X86_IO_APIC is not set

the build breaks with the following errors

arch/i386/kernel/kernel.o: In function `intel_thermal_interrupt':
arch/i386/kernel/kernel.o(.text+0x7271): undefined reference to `ack_APIC_irq'
arch/i386/kernel/kernel.o: In function `intel_init_thermal':
arch/i386/kernel/kernel.o(.text.init+0x2ad2): undefined reference to `apic_read'
arch/i386/kernel/kernel.o(.text.init+0x2b12): undefined reference to `apic_write_around'
arch/i386/kernel/kernel.o(.text.init+0x2b31): undefined reference to `apic_read'
arch/i386/kernel/kernel.o(.text.init+0x2b41): undefined reference to `apic_write_around'
make: *** [vmlinux] Error 1

moreover, all works fine if

CONFIG_SMP= y

or

CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y

I have a single processor machine (Celeron (Mendocino)) and, yes, I
did 'make mrproper'

bye bye
-b

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head --lines=4 $HOME/.signature

2002-04-30 08:12:14

by Zwane Mwaikambo

Subject: Re: 2.5.11 SMP, APIC, build breaks

On Mon, 29 Apr 2002, blitzkrieg wrote:

> HI,
> I was trying to compile 2.5.11, I noticed that if
> # CONFIG_SMP is not set
>
> and
>
> # CONFIG_X86_LOCAL_APIC is not set
> # CONFIG_X86_IO_APIC is not set

Basically, that code needs CONFIG_X86_LOCAL_APIC, which is set for SMP or
Local-APIC on UP (no IOAPIC needed). -dj has the following which fixes
that dependancy.

dep_bool 'check for P4 thermal throttling interrupt.' \
CONFIG_X86_MCE_P4THERMAL $CONFIG_X86_MCE $CONFIG_X86_LOCAL_APIC

It'll get fixed when that stuff gets merged from -dj (where it originates
from). For now simply enabling CONFIG_X86_LOCAL_APIC should suffice.

Thanks,
Zwane Mwaikambo

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