struct desc_struct user_cs;
unsigned long exec_limit;
void *vdso;
+#ifdef CONFIG_XEN
+ int has_foreign_mappings;
+#endif
} mm_context_t;
+#ifdef CONFIG_XEN
+/* mm/memory.c:exit_mmap hook */
+extern void _arch_exit_mmap(struct mm_struct *mm);
+#define arch_exit_mmap(_mm) _arch_exit_mmap(_mm)
+
+/* kernel/fork.c:dup_mmap hook */
+extern void _arch_dup_mmap(struct mm_struct *mm);
+#define arch_dup_mmap(mm, oldmm) ((void)(oldmm), _arch_dup_mmap(mm))
+#endif /* CONFIG_XEN */
+
#endif