Re: [PATCH] x86: 64bit support more than 256 irq v2

[Yinghai Lu]

On Fri, Aug 1, 2008 at 7:02 PM, Yinghai Lu <yhlu.kernel@xxxxxxxxx> wrote:
> 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@xxxxxxxxxxxxx>
>        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
>
> v2: change NR_IRQS to 1024
>
> Signed-off-by: Yinghai Lu <yhlu.kernel@xxxxxxxxx>
> Tested-by: Dhaval Giani <dhaval@xxxxxxxxxxxxxxxxxx>

this is for
http://bugzilla.kernel.org/show_bug.cgi?id=11201

but need SGI guys to verify in their system. they like to have NR_IRQS to be 224

otherwise we need to use dyn_array solution or wait for Eric come out
dyn irq_desc/irq_cfg

YH
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