Re: Strange hang on ia64 with CONFIG_PRINTK_TIME=y

[Tony Luck]

> We *ought* to be safe after cpu_init() ... which is called from setup_arch(),
> which is several calls before sched_init().

Perhaps what is happening is that cpu0 comes online ... safely skips
over the early printk calls.  Calls cpu_init() which sets up the resources
*it* needs (ar.k3 points to per-cpu space), and then executes
sched_init() which marks it safe for all printk's. Then cpu1 comes
up and does a printk before it gets to cpu_init().

Try with Ingo patch and CONFIG_SMP=n to see if you can come
up on a uni-processor.

-Tony
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