> I don't get it.  By the time the secondaries enter the idle loop, they've
> already run init_timers_cpu() anyway.  You patch doesn't address a


The notifier uns only after smp_prepare_cpus and then all the synchronization
is long done. 

> secondary taking a timer interrupt prior to the BP having run
> init_timers(), does it?

It initializes the timer of a CPU before it is even touched. 

-Andi

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