1 files changed, 17 insertions, 4 deletions

diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c
index 3232148756ce..02f13cb99bc2 100644
--- a/arch/x86/mm/numa_64.c
+++ b/arch/x86/mm/numa_64.c
@@ -163,14 +163,27 @@ static void * __init early_node_mem(int nodeid, unsigned long start,
                                     unsigned long end, unsigned long size,
                                     unsigned long align)
 {
-        unsigned long mem = find_e820_area(start, end, size, align);
+        unsigned long mem;
 
+        /*
+         * put it on high as possible
+         * something will go with NODE_DATA
+         */
+        if (start < (MAX_DMA_PFN<<PAGE_SHIFT))
+                start = MAX_DMA_PFN<<PAGE_SHIFT;
+        if (start < (MAX_DMA32_PFN<<PAGE_SHIFT) &&
+            end > (MAX_DMA32_PFN<<PAGE_SHIFT))
+                start = MAX_DMA32_PFN<<PAGE_SHIFT;
+        mem = find_e820_area(start, end, size, align);
         if (mem != -1L)
                 return __va(mem);
 
-
-        start = __pa(MAX_DMA_ADDRESS);
-        end = max_low_pfn_mapped << PAGE_SHIFT;
+        /* extend the search scope */
+        end = max_pfn_mapped << PAGE_SHIFT;
+        if (end > (MAX_DMA32_PFN<<PAGE_SHIFT))
+                start = MAX_DMA32_PFN<<PAGE_SHIFT;
+        else
+                start = MAX_DMA_PFN<<PAGE_SHIFT;
         mem = find_e820_area(start, end, size, align);
         if (mem != -1L)
                 return __va(mem);