Re: [PATCH 4/5] x86: Add config variables for SMP_MAX

From: Mike Travis
Date: Sat Jan 19 2008 - 16:39:21 EST


Ingo Molnar wrote:
> * travis@xxxxxxx <travis@xxxxxxx> wrote:
>
>> Adds and increases some config variables to accomodate larger SMP
>> configurations:
>>
>> NR_CPUS: max limit now 4096
>> NODES_SHIFT: max limit now 9
>> THREAD_ORDER: max limit now 3
>> X86_SMP_MAX: say Y to enable possible cpus == NR_CPUS
>>
>> Signed-off-by: Mike Travis <travis@xxxxxxx>
>
> i've bisected a boot failure down to this patch (sans the THREAD_ORDER
> bits): it causes an instant reboot of the 64-bit kernel upon bootup.
> Failing config attached.
>
> Ingo
>

Thanks Ingo!

I've pulled the THREAD_ORDER change from my next version of the patch.
Seems SMP_MAX is just not ready for prime time yet.

One problem that I'm having appears to be that the !NUMA config of the
current -mm version also doesn't boot so I haven't been able to verify
that. (At least it doesn't seem to make it worse... ;-)

Thanks,
Mike
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