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[Xen-bugs] [Bug 904] Build error linux-2.6.20-xen-3.0.3 arch/x86_64/kern

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Subject: [Xen-bugs] [Bug 904] Build error linux-2.6.20-xen-3.0.3 arch/x86_64/kernel/io_apic-xen.c
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Date: Thu, 15 Mar 2007 14:18:58 -0700
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grrogers@xxxxxxx changed:

           What    |Removed                     |Added
             Status|NEW                         |ASSIGNED

------- Comment #1 from grrogers@xxxxxxx  2007-03-15 14:18 -------
(In reply to comment #0)
> Attempts to build this linux kernel result in the following:
> /usr/src/kernel/linux-2.6.20-xen-3.0.3# make
>   CHK     include/linux/version.h
>   CHK     include/linux/utsrelease.h
>   CHK     include/linux/compile.h
>   CC      arch/x86_64/kernel/io_apic-xen.o
> arch/x86_64/kernel/io_apic-xen.c: In function â??__setup_vector_irqâ??:
> arch/x86_64/kernel/io_apic-xen.c:698: warning: unused variable â??flagsâ??
> arch/x86_64/kernel/io_apic-xen.c: At top level:
> arch/x86_64/kernel/io_apic-xen.c:1966: error: â??ack_apic_edgeâ?? undeclared
> here (not in a function)
> arch/x86_64/kernel/io_apic-xen.c:1970: error: â??ioapic_retrigger_irqâ??
> undeclared here (not in a function)
> make[1]: *** [arch/x86_64/kernel/io_apic-xen.o] Error 1
> make: *** [arch/x86_64/kernel] Error 2

I had this same problem (using 2.6.19).  If you set HT_IRQ=n, the error message
goes away and the resulting kernel boots just fine.

In menuconfig this means:
Bus options (PCI etc.) --->
        [ ] Interrupts on hypertransport devices

I'm unsure of whether the cause is that I'm on Intel x86_64 without HT or if
it's just a bug.  If it is because of Intel hardware, then perhaps you could
set a config dependency accordingly (based on the set Processor family
probably) to resolve this.

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