[PATCH] Fix sparsemem on Cell

Fix an oops experienced on the Cell architecture when init-time functions,
early_*(), are called at runtime.  It alters the call paths to make sure
that the callers explicitly say whether the call is being made on behalf of
a hotplug even, or happening at boot-time.

It has been compile tested on ppc64, ia64, s390, i386 and x86_64.

Acked-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Acked-by: Andy Whitcroft <apw@shadowen.org>
Cc: Christoph Lameter <clameter@engr.sgi.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 0c055a090f4d..84279127fcd3 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -67,11 +67,13 @@ static int __add_zone(struct zone *zone, unsigned long phys_start_pfn)
         zone_type = zone - pgdat->node_zones;
         if (!populated_zone(zone)) {
                 int ret = 0;
-                ret = init_currently_empty_zone(zone, phys_start_pfn, nr_pages);
+                ret = init_currently_empty_zone(zone, phys_start_pfn,
+                                                nr_pages, MEMMAP_HOTPLUG);
                 if (ret < 0)
                         return ret;
         }
-        memmap_init_zone(nr_pages, nid, zone_type, phys_start_pfn);
+        memmap_init_zone(nr_pages, nid, zone_type,
+                         phys_start_pfn, MEMMAP_HOTPLUG);
         return 0;
 }