1 files changed, 13 insertions, 1 deletions

diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c
index 5df777794403..fa9f6c72f557 100644
--- a/arch/powerpc/kernel/machine_kexec.c
+++ b/arch/powerpc/kernel/machine_kexec.c
@@ -165,7 +165,7 @@ void __init reserve_crashkernel(void)
         if (memory_limit && memory_limit <= crashk_res.end) {
                 memory_limit = crashk_res.end + 1;
                 printk("Adjusted memory limit for crashkernel, now 0x%llx\n",
-                       (unsigned long long)memory_limit);
+                       memory_limit);
         }
 
         printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
@@ -204,6 +204,12 @@ static struct property crashk_size_prop = {
         .value = &crashk_size,
 };
 
+static struct property memory_limit_prop = {
+        .name = "linux,memory-limit",
+        .length = sizeof(unsigned long long),
+        .value = &memory_limit,
+};
+
 static void __init export_crashk_values(struct device_node *node)
 {
         struct property *prop;
@@ -223,6 +229,12 @@ static void __init export_crashk_values(struct device_node *node)
                 crashk_size = resource_size(&crashk_res);
                 prom_add_property(node, &crashk_size_prop);
         }
+
+        /*
+         * memory_limit is required by the kexec-tools to limit the
+         * crash regions to the actual memory used.
+         */
+        prom_update_property(node, &memory_limit_prop);
 }
 
 static int __init kexec_setup(void)