[Xen-changelog] [xen-unstable] x86-64: Fix off-by-one error in __addr_ok() macro

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir@xxxxxxx>
# Date 1314800089 -3600
# Node ID 72edc40e2942a3cf0ee8e0d3a330d2e5c2bdfb53
# Parent  ac9aa65050e9abc8f1c12c8603acf3b99e22cddc
x86-64: Fix off-by-one error in __addr_ok() macro

Signed-off-by: Laszlo Ersek <lersek@xxxxxxxxxx>
Signed-off-by: Keir Fraser <keir@xxxxxxx>
---


diff -r ac9aa65050e9 -r 72edc40e2942 xen/include/asm-x86/x86_64/uaccess.h
--- a/xen/include/asm-x86/x86_64/uaccess.h      Tue Aug 30 11:46:58 2011 +0100
+++ b/xen/include/asm-x86/x86_64/uaccess.h      Wed Aug 31 15:14:49 2011 +0100
@@ -34,7 +34,7 @@
  * non-canonical address (and thus fault) before ever reaching VIRT_START.
  */
 #define __addr_ok(addr) \
-    (((unsigned long)(addr) < (1UL<<48)) || \
+    (((unsigned long)(addr) < (1UL<<47)) || \
      ((unsigned long)(addr) >= HYPERVISOR_VIRT_END))
 
 #define access_ok(addr, size) \

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