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# HG changeset patch
# User kaf24@localhost.localdomain
# Date 1169818612 0
# Node ID 057c4c2991fa650e91300301e5cac865f98889d2
# Parent fcaf34bc5e4129c4299e5db3be1a9cac3c0259ca
32-on-64: Fix an one-off error in compat_addr_ok().
Signed-off-by: Jan Beulich <jbeulich@novell.com>
---
xen/include/asm-x86/x86_64/uaccess.h | 3 ++-
1 files changed, 2 insertions(+), 1 deletion(-)

diff -r fcaf34bc5e41 -r 057c4c2991fa xen/include/asm-x86/x86_64/uaccess.h
--- a/xen/include/asm-x86/x86_64/uaccess.h Fri Jan 26 13:34:02 2007 +0000
+++ b/xen/include/asm-x86/x86_64/uaccess.h Fri Jan 26 13:36:52 2007 +0000
@@ -20,7 +20,8 @@
#define __compat_addr_ok(addr) \
((unsigned long)(addr) < HYPERVISOR_COMPAT_VIRT_START(current->domain))

-#define compat_access_ok(addr, size) __compat_addr_ok((addr) + (size))
+#define compat_access_ok(addr, size) \
+ __compat_addr_ok((unsigned long)(addr) + ((size) ? (size) - 1 : 0))

#define compat_array_access_ok(addr,count,size) \
(likely((count) < (~0U / (size))) && \

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