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-rw-r--r--include/asm-s390/processor.h2
-rw-r--r--mm/bootmem.c11
2 files changed, 10 insertions, 3 deletions
diff --git a/include/asm-s390/processor.h b/include/asm-s390/processor.h
index a3a4e5fd30d..578c2209fa7 100644
--- a/include/asm-s390/processor.h
+++ b/include/asm-s390/processor.h
@@ -337,6 +337,8 @@ struct notifier_block;
int register_idle_notifier(struct notifier_block *nb);
int unregister_idle_notifier(struct notifier_block *nb);
+#define ARCH_LOW_ADDRESS_LIMIT 0x7fffffffUL
+
#endif
/*
diff --git a/mm/bootmem.c b/mm/bootmem.c
index f0f85fa713c..d53112fcb40 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -15,6 +15,7 @@
#include <asm/bug.h>
#include <asm/io.h>
+#include <asm/processor.h>
#include "internal.h"
@@ -453,7 +454,9 @@ void * __init __alloc_bootmem_node(pg_data_t *pgdat, unsigned long size,
return __alloc_bootmem(size, align, goal);
}
-#define LOW32LIMIT 0xffffffff
+#ifndef ARCH_LOW_ADDRESS_LIMIT
+#define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL
+#endif
void * __init __alloc_bootmem_low(unsigned long size, unsigned long align,
unsigned long goal)
@@ -462,7 +465,8 @@ void * __init __alloc_bootmem_low(unsigned long size, unsigned long align,
void *ptr;
list_for_each_entry(bdata, &bdata_list, list) {
- ptr = __alloc_bootmem_core(bdata, size, align, goal, LOW32LIMIT);
+ ptr = __alloc_bootmem_core(bdata, size, align, goal,
+ ARCH_LOW_ADDRESS_LIMIT);
if (ptr)
return ptr;
}
@@ -478,5 +482,6 @@ void * __init __alloc_bootmem_low(unsigned long size, unsigned long align,
void * __init __alloc_bootmem_low_node(pg_data_t *pgdat, unsigned long size,
unsigned long align, unsigned long goal)
{
- return __alloc_bootmem_core(pgdat->bdata, size, align, goal, LOW32LIMIT);
+ return __alloc_bootmem_core(pgdat->bdata, size, align, goal,
+ ARCH_LOW_ADDRESS_LIMIT);
}