Hi, I am porting kernel (3.14.22) on a custom ARM(Cortex A9 x 3) based platform. I was able to get it working on uniprocessor mode. Now I wish to get the SMP mode working as mine is Cortex A9 x3 platform. However, I see that the booting gets stuck after the following log:- CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 Setting up static identity map for 0x1f9690 - 0x1f96c4 CPU1: Booted secondary processor When I debugged it further, I found that it waits endlessly in a arch_spin_lock() :- while (lockval.tickets.next != lockval.tickets.owner) { // loops here wfe(); lockval.tickets.owner = ACCESS_ONCE(lock->tickets.owner); } It would be great if someone can give me pointers about how to proceed ahead. Regards, Ayan kumar Halder _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies