diff --git a/arch/s390/include/asm/physmem_info.h b/arch/s390/include/asm/physmem_info.h
index e747b067f8dbb..d2f1cc7426954 100644
--- a/arch/s390/include/asm/physmem_info.h
+++ b/arch/s390/include/asm/physmem_info.h
@@ -170,4 +170,7 @@ static inline unsigned long get_physmem_reserved(enum reserved_range_type type,
 	return *size;
 }
 
+#define AMODE31_START	(physmem_info.reserved[RR_AMODE31].start)
+#define AMODE31_END	(physmem_info.reserved[RR_AMODE31].end)
+
 #endif
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 0544830ffb90a..cbd5290939df1 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -765,7 +765,7 @@ static void __init relocate_amode31_section(void)
 	unsigned long amode31_size = __eamode31 - __samode31;
 	long amode31_offset, *ptr;
 
-	amode31_offset = physmem_info.reserved[RR_AMODE31].start - (unsigned long)__samode31;
+	amode31_offset = AMODE31_START - (unsigned long)__samode31;
 	pr_info("Relocating AMODE31 section of size 0x%08lx\n", amode31_size);
 
 	/* Move original AMODE31 section to the new one */