[PATCH] x86_64: Fix sparse mem

Fix up booting with sparse mem enabled. Otherwise it would just
cause an early PANIC at boot.

Signed-off-by: Bob Picco <bob.picco@hp.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 17 insertions, 1 deletions

diff --git a/arch/x86_64/mm/numa.c b/arch/x86_64/mm/numa.c
index 629ff0621b3d..a828a01739cc 100644
--- a/arch/x86_64/mm/numa.c
+++ b/arch/x86_64/mm/numa.c
@@ -113,7 +113,6 @@ void __init setup_node_bootmem(int nodeid, unsigned long start, unsigned long en
         start_pfn = start >> PAGE_SHIFT;
         end_pfn = end >> PAGE_SHIFT;
 
-        memory_present(nodeid, start_pfn, end_pfn);
         nodedata_phys = find_e820_area(start, end, pgdat_size); 
         if (nodedata_phys == -1L) 
                 panic("Cannot find memory pgdat in node %d\n", nodeid);
@@ -285,9 +284,26 @@ unsigned long __init numa_free_all_bootmem(void)
         return pages;
 } 
 
+#ifdef CONFIG_SPARSEMEM
+static void __init arch_sparse_init(void)
+{
+        int i;
+
+        for_each_online_node(i)
+                memory_present(i, node_start_pfn(i), node_end_pfn(i));
+
+        sparse_init();
+}
+#else
+#define arch_sparse_init() do {} while (0)
+#endif
+
 void __init paging_init(void)
 { 
         int i;
+
+        arch_sparse_init();
+
         for_each_online_node(i) {
                 setup_node_zones(i); 
         }