1 files changed, 38 insertions, 0 deletions

diff --git a/arch/x86_64/kernel/e820.c b/arch/x86_64/kernel/e820.c
index 6fe191c58084..4651fd22b213 100644
--- a/arch/x86_64/kernel/e820.c
+++ b/arch/x86_64/kernel/e820.c
@@ -83,6 +83,13 @@ static inline int bad_addr(unsigned long *addrp, unsigned long size)
                 return 1;
         }
 
+#ifdef CONFIG_NUMA
+        /* NUMA memory to node map */
+        if (last >= nodemap_addr && addr < nodemap_addr + nodemap_size) {
+                *addrp = nodemap_addr + nodemap_size;
+                return 1;
+        }
+#endif
         /* XXX ramdisk image here? */ 
         return 0;
 } 
@@ -184,6 +191,37 @@ unsigned long __init e820_end_of_ram(void)
 }
 
 /*
+ * Find the hole size in the range.
+ */
+unsigned long __init e820_hole_size(unsigned long start, unsigned long end)
+{
+        unsigned long ram = 0;
+        int i;
+
+        for (i = 0; i < e820.nr_map; i++) {
+                struct e820entry *ei = &e820.map[i];
+                unsigned long last, addr;
+
+                if (ei->type != E820_RAM ||
+                    ei->addr+ei->size <= start ||
+                    ei->addr >= end)
+                        continue;
+
+                addr = round_up(ei->addr, PAGE_SIZE);
+                if (addr < start)
+                        addr = start;
+
+                last = round_down(ei->addr + ei->size, PAGE_SIZE);
+                if (last >= end)
+                        last = end;
+
+                if (last > addr)
+                        ram += last - addr;
+        }
+        return ((end - start) - ram);
+}
+
+/*
  * Mark e820 reserved areas as busy for the resource manager.
  */
 void __init e820_reserve_resources(void)