1 files changed, 9 insertions, 4 deletions

diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index de636b215677..916ba898237f 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -352,7 +352,7 @@ reserve_memory (void)
         }
 #endif
 
-#ifdef CONFIG_PROC_VMCORE
+#ifdef CONFIG_CRASH_KERNEL
         if (reserve_elfcorehdr(&rsvd_region[n].start,
                                &rsvd_region[n].end) == 0)
                 n++;
@@ -478,7 +478,12 @@ static __init int setup_nomca(char *s)
 }
 early_param("nomca", setup_nomca);
 
-#ifdef CONFIG_PROC_VMCORE
+/*
+ * Note: elfcorehdr_addr is not just limited to vmcore. It is also used by
+ * is_kdump_kernel() to determine if we are booting after a panic. Hence
+ * ifdef it under CONFIG_CRASH_DUMP and not CONFIG_PROC_VMCORE.
+ */
+#ifdef CONFIG_CRASH_DUMP
 /* elfcorehdr= specifies the location of elf core header
  * stored by the crashed kernel.
  */
@@ -502,11 +507,11 @@ int __init reserve_elfcorehdr(unsigned long *start, unsigned long *end)
          * to work properly.
          */
 
-        if (elfcorehdr_addr >= ELFCORE_ADDR_MAX)
+        if (!is_vmcore_usable())
                 return -EINVAL;
 
         if ((length = vmcore_find_descriptor_size(elfcorehdr_addr)) == 0) {
-                elfcorehdr_addr = ELFCORE_ADDR_MAX;
+                vmcore_unusable();
                 return -EINVAL;
         }