Yinghai Lu <yhlu.kernel@gmail.com> writes:

quoted text
> Dhaval Giani got:
> kernel BUG at arch/x86/kernel/io_apic_64.c:357!
> invalid opcode: 0000 [1] SMP
> CPU 24
> ...
>
> his system (x3950) has 8 ioapic, irq > 256
>
> caused by
>         commit 9b7dc567d03d74a1fbae84e88949b6a60d922d82
>         Author: Thomas Gleixner <tglx@linutronix.de>
>         Date:   Fri May 2 20:10:09 2008 +0200
>
>            x86: unify interrupt vector defines
>
>            The interrupt vector defines are copied 4 times around with minimal
>            differences. Move them all into asm-x86/irq_vectors.h
>
> because 64bit allow same vector for different cpu to serve different irq
>
> need to create that array dynamically later

YH Thank you for splitting this out.  This still doesn't restore the
pre merge NR_IRQS heuristic.  So I don't think it is a proper regression fix.

Eric
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