1 files changed, 10 insertions, 4 deletions

diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 66377baea6a5..be398451d45c 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -256,7 +256,7 @@ reserve_memory (void)
 
 #ifdef CONFIG_KEXEC
         /* crashkernel=size@offset specifies the size to reserve for a crash
-         * kernel.(offset is ingored for keep compatibility with other archs)
+         * kernel. If offset is 0, then it is determined automatically.
          * By reserving this memory we guarantee that linux never set's it
          * up as a DMA target.Useful for holding code to do something
          * appropriate after a kernel panic.
@@ -266,10 +266,16 @@ reserve_memory (void)
                 unsigned long base, size;
                 if (from) {
                         size = memparse(from + 12, &from);
+                        if (*from == '@')
+                                base = memparse(from+1, &from);
+                        else
+                                base = 0;
                         if (size) {
-                                sort_regions(rsvd_region, n);
-                                base = kdump_find_rsvd_region(size,
-                                rsvd_region, n);
+                                if (!base) {
+                                        sort_regions(rsvd_region, n);
+                                        base = kdump_find_rsvd_region(size,
+                                                                rsvd_region, n);
+                                        }
                                 if (base != ~0UL) {
                                         rsvd_region[n].start =
                                                 (unsigned long)__va(base);