From: Jeff Dike <jdike@addtoit.com>
Date: Fri, 8 Jun 2007 20:46:49 +0000 (-0700)
Subject: uml: fix kernel stack size on x86_64
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e80ad9b651abb7229551339081d7e53097bf8ea7;p=linux-beck.git

uml: fix kernel stack size on x86_64

Force KERNEL_STACK_ORDER to be at least 1 on UML/x86_64, to avoid overflows.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/arch/um/Kconfig b/arch/um/Kconfig
index c504312219b4..e6ff30266542 100644
--- a/arch/um/Kconfig
+++ b/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