[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>
diff --git a/arch/x86_64/mm/numa.c b/arch/x86_64/mm/numa.c
index 629ff06..a828a01 100644
--- a/arch/x86_64/mm/numa.c
+++ b/arch/x86_64/mm/numa.c
@@ -113,7 +113,6 @@
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 @@
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);
}