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DateTue, 05 Aug 2008 22:19:17 -0700 (PDT)
SubjectRe: 2.6.27rc1 cannot boot more than 8CPUs
FromDavid Miller <>
From: "Jeff Chua" <jeff.chua.linux@gmail.com>
Date: Wed, 6 Aug 2008 11:15:30 +0800

> I've a Dell R900 with 4 quad-core Xeon processors (total 16CPUs), but
> can only managed to boot up with CONFIG_NR_CPUS=8. Setting
> CONFIG_NR_CPUS=16 causes the kernel to hang while booting.
> 
> 
> Here's the dmesg with CONFIG_NR_CPUS=8 ...

Do you have lockdep enabled?  If sure, try turning that off.


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