ipi_call_lock();
        set_cpu_online(smp_processor_id(), true);
        ipi_call_unlock();
-       __ctl_clear_bit(0, 28); /* Disable lowcore protection */
-       S390_lowcore.restart_psw.mask =
-               PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_MASK_EA | PSW_MASK_BA;
-       S390_lowcore.restart_psw.addr =
-               PSW_ADDR_AMODE | (unsigned long) psw_restart_int_handler;
-       __ctl_set_bit(0, 28); /* Enable lowcore protection */
 -      /*
 -       * Wait until the cpu which brought this one up marked it
 -       * active before enabling interrupts.
 -       */
 -      while (!cpumask_test_cpu(smp_processor_id(), cpu_active_mask))
 -              cpu_relax();
        local_irq_enable();
        /* cpu_idle will call schedule for us */
        cpu_idle();