diff --git a/[refs] b/[refs]
index e75c591f4a24..a1da5823c2d3 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 272c1d21d6fe42979068e14c04fb60fb6045ad74
+refs/heads/master: e80ad9b651abb7229551339081d7e53097bf8ea7
diff --git a/trunk/arch/um/Kconfig b/trunk/arch/um/Kconfig
index c504312219b4..e6ff30266542 100644
--- a/trunk/arch/um/Kconfig
+++ b/trunk/arch/um/Kconfig
@@ -278,6 +278,7 @@ config HIGHMEM
 config KERNEL_STACK_ORDER
 	int "Kernel stack size order"
 	default 1 if 64BIT
+	range 1 10 if 64BIT
 	default 0 if !64BIT
 	help
 	This option determines the size of UML kernel stacks.  They will