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Diffstat (limited to 'arch/x86/mm/numa_64.c')
-rw-r--r--arch/x86/mm/numa_64.c21
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);
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