[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>

arch/x86_64/kernel/setup.c

@@ -412,7 +412,6 @@ contig_initmem_init(unsigned long start_pfn, unsigned long end_pfn)
 {
 	unsigned long bootmap_size, bootmap;
 
-	memory_present(0, start_pfn, end_pfn);
 	bootmap_size = bootmem_bootmap_pages(end_pfn)<<PAGE_SHIFT;
 	bootmap = find_e820_area(0, end_pfn<<PAGE_SHIFT, bootmap_size);
 	if (bootmap == -1L)
@@ -659,8 +658,6 @@ void __init setup_arch(char **cmdline_p)
 	}
 #endif
 
-	sparse_init();
-
 	paging_init();
 
 	check_ioapic();

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); 
 	}