[PATCH] powerpc: iSeries has only 256 IRQs

Stephen Rothwell sfr at canb.auug.org.au
Wed Apr 5 01:08:18 EST 2006


Hi Olaf,

On Tue, 4 Apr 2006 15:36:14 +0200 Olaf Hering <olh at suse.de> wrote:
>
>  On Tue, Apr 04, Stephen Rothwell wrote:
> 
> > The iSeries Hypervisor only allows us to specify IRQ numbers up to 255 (it
> > has a u8 field to pass it in).  This patch allows platforms to specify a
> > maximum to the virtual IRQ numbers we will use and has iSeries set that
> > to 255.  If not set, the maximum is NR_IRQS - 1 (as before).
> 
> I tried this patch, and the partition dies that way:

If you have time, can you try (without this patch) just changing NR_IRQS in
include/asm-powerpc/irq.h from 512 to 256 and see if that kernel will boot
and what changes (if any) you get to the boot messages.

Thanks.

-- 
Cheers,
Stephen Rothwell                    sfr at canb.auug.org.au
http://www.canb.auug.org.au/~sfr/
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