From: Keir Fraser <keir.fraser@citrix.com>
Date: Wed, 26 May 2010 07:09:38 +0000 (+0100)
Subject: compat-guest accessor macros do not need address check for hvm guests.
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~12087
X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https:/%22bookmarks://%22/%22http:/www.example.com/cgi/%22https:/%22bookmarks:/%22?a=commitdiff_plain;h=48114954f9e539dbdfb1e16b224b4282b27e46db;p=xen.git

compat-guest accessor macros do not need address check for hvm guests.

Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com>
---

diff --git a/xen/include/xen/compat.h b/xen/include/xen/compat.h
index e662045841..0b8c2c9416 100644
--- a/xen/include/xen/compat.h
+++ b/xen/include/xen/compat.h
@@ -90,8 +90,9 @@
  * Allows use of faster __copy_* functions.
  */
 #define compat_handle_okay(hnd, nr)                                  \
+    (paging_mode_external(current->domain) ||                        \
     compat_array_access_ok((void *)(full_ptr_t)(hnd).c, (nr),        \
-                           sizeof(**(hnd)._))
+                           sizeof(**(hnd)._)))
 
 #define __copy_to_compat_offset(hnd, off, ptr, nr) ({                \
     const typeof(*(ptr)) *_s = (ptr);                                \