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    SubjectRe: 2.6.27rc1 cannot boot more than 8CPUs
    From
    From: "Jeff Chua" <jeff.chua.linux@gmail.com>
    Date: Wed, 6 Aug 2008 14:42:11 +0800

    > On Wed, Aug 6, 2008 at 1:19 PM, David Miller <davem@davemloft.net> wrote:
    > > From: "Jeff Chua" <jeff.chua.linux@gmail.com>
    > > Date: Wed, 6 Aug 2008 11:15:30 +0800
    > > Do you have lockdep enabled? If sure, try turning that off.
    >
    > It's enabled by default, and I can't seem to disable it even if I
    > commented it out or delete it, it comes back after running "make".

    You have to turn off CONFIG_PROVE_LOCKING, in fact just turn off
    everything in the lock debugging section:

    # CONFIG_DEBUG_RT_MUTEXES is not set
    # CONFIG_RT_MUTEX_TESTER is not set
    # CONFIG_DEBUG_SPINLOCK is not set
    # CONFIG_DEBUG_MUTEXES is not set
    # CONFIG_DEBUG_LOCK_ALLOC is not set
    # CONFIG_PROVE_LOCKING is not set
    # CONFIG_LOCK_STAT is not set
    # CONFIG_DEBUG_SPINLOCK_SLEEP is not set
    # CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set


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