XXXX pass in cpu_pause_func via pause_cpus

@@ -470,11 +470,11 @@
          */
         thread_affinity_set(curthread, 0);
         kpreempt_disable();
 
         if (ncpus > 1)
-                pause_cpus(NULL);
+                pause_cpus(NULL, NULL);
         /*
          * We can grab the ec_lock as it's a spinlock with a high SPL. Hence
          * any holder would have dropped it to get through pause_cpus().
          */
         mutex_enter(&ec_lock);