diff --git a/include/asm-s390/smp.h b/include/asm-s390/smp.h
index 0a28e6d..76e424f 100644
--- a/include/asm-s390/smp.h
+++ b/include/asm-s390/smp.h
@@ -110,6 +110,7 @@
 	__load_psw_mask(psw_kernel_bits & ~PSW_MASK_MCHECK);
 }
 
+#define hard_smp_processor_id()		0
 #define smp_cpu_not_running(cpu)	1
 #define smp_setup_cpu_possible_map()	do { } while (0)
 #endif