1 files changed, 6 insertions, 0 deletions

diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index 96722cb1b49d..d3edb12f3cf9 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