diff -r badf51e24549 xen/include/asm-x86/x86_32/uaccess.h
--- a/xen/include/asm-x86/x86_32/uaccess.h	Fri Oct 27 11:11:46 2006 -0400
+++ b/xen/include/asm-x86/x86_32/uaccess.h	Wed Nov 01 10:42:16 2006 -0500
@@ -8,7 +8,7 @@
  * Returns 0 if the range is valid, nonzero otherwise.
  *
  * This is equivalent to the following test:
- * (u33)addr + (u33)size >= (u33)HYPERVISOR_VIRT_START
+ * (u33)addr + (u33)size > (u33)HYPERVISOR_VIRT_START
  */
 #define __range_not_ok(addr,size) ({ \
 	unsigned long flag,sum; \