commit 475c63bded322545d1e9ccc5930c8903d2c97c4c
tree b7f254c1b94a61283a50cefe52f571d97493a37e
parent bcb9b99d1fb6a1cbe592f131dc95450d2f18c91f
author Horms <horms@verge.net.au> 1170640743 +0900
committer Tony Luck <tony.luck@intel.com> 1170703773 -0800

[IA64] Zero size /proc/vmcore on ia64

Set saved_max_pfn when discontig memory is in use.

This sets up saved_max_pfn when disctontig memory is in use.
This mirrors the code for contig memory.

This patch does not entirely solve the problem of making vmcore work,
however it does appear to be neccessary. Please consider applying.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Tony Luck <tony.luck@intel.com>

 arch/ia64/mm/discontig.c |    6 ++++++
 1 file changed, 6 insertions(+)

475c63bded322545d1e9ccc5930c8903d2c97c4c
diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index 96722cb..d3edb12 100644
--- a/arch/ia64/mm/discontig.c
+++ b/arch/ia64/mm/discontig.c
@@ -506,6 +506,12 @@ void __init find_memory(void)
 	max_pfn = max_low_pfn;
 
 	find_initrd();
+
+#ifdef CONFIG_CRASH_DUMP
+	/* If we are doing a crash dump, we still need to know the real mem
+	 * size before original memory map is reset. */
+        saved_max_pfn = max_pfn;
+#endif
 }
 
 #ifdef CONFIG_SMP