1 files changed, 30 insertions, 1 deletions

diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index a06a27d6cfcd..7f6ddcb5d485 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -269,7 +269,7 @@ static void __init bootmem_init(void)
 
 static void __init bootmem_init(void)
 {
-        unsigned long reserved_end;
+        unsigned long init_begin, reserved_end;
         unsigned long mapstart = ~0UL;
         unsigned long bootmap_size;
         int i;
@@ -342,6 +342,35 @@ static void __init bootmem_init(void)
          */
         bootmap_size = init_bootmem_node(NODE_DATA(0), mapstart,
                                          min_low_pfn, max_low_pfn);
+
+
+        init_begin = PFN_UP(__pa_symbol(&__init_begin));
+        for (i = 0; i < boot_mem_map.nr_map; i++) {
+                unsigned long start, end;
+
+                start = PFN_UP(boot_mem_map.map[i].addr);
+                end = PFN_DOWN(boot_mem_map.map[i].addr
+                                + boot_mem_map.map[i].size);
+
+                if (start <= init_begin)
+                        start = init_begin;
+                if (start >= end)
+                        continue;
+
+#ifndef CONFIG_HIGHMEM
+                if (end > max_low_pfn)
+                        end = max_low_pfn;
+
+                /*
+                 * ... finally, is the area going away?
+                 */
+                if (end <= start)
+                        continue;
+#endif
+
+                add_active_range(0, start, end);
+        }
+
         /*
          * Register fully available low RAM pages with the bootmem allocator.
          */