1 files changed, 9 insertions, 2 deletions

diff --git a/arch/x86/include/asm/xen/page.h b/arch/x86/include/asm/xen/page.h
index 3e276eb23d1b..c949923a5668 100644
--- a/arch/x86/include/asm/xen/page.h
+++ b/arch/x86/include/asm/xen/page.h
@@ -49,10 +49,17 @@ extern bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn);
 extern unsigned long set_phys_range_identity(unsigned long pfn_s,
                                              unsigned long pfn_e);
 
+extern int set_foreign_p2m_mapping(struct gnttab_map_grant_ref *map_ops,
+                                   struct gnttab_map_grant_ref *kmap_ops,
+                                   struct page **pages, unsigned int count);
 extern int m2p_add_override(unsigned long mfn, struct page *page,
                             struct gnttab_map_grant_ref *kmap_op);
+extern int clear_foreign_p2m_mapping(struct gnttab_unmap_grant_ref *unmap_ops,
+                                     struct gnttab_map_grant_ref *kmap_ops,
+                                     struct page **pages, unsigned int count);
 extern int m2p_remove_override(struct page *page,
-                                struct gnttab_map_grant_ref *kmap_op);
+                               struct gnttab_map_grant_ref *kmap_op,
+                               unsigned long mfn);
 extern struct page *m2p_find_override(unsigned long mfn);
 extern unsigned long m2p_find_override_pfn(unsigned long mfn, unsigned long pfn);
 
@@ -121,7 +128,7 @@ static inline unsigned long mfn_to_pfn(unsigned long mfn)
                 pfn = m2p_find_override_pfn(mfn, ~0);
         }
 
-        /* 
+        /*
          * pfn is ~0 if there are no entries in the m2p for mfn or if the
          * entry doesn't map back to the mfn and m2p_override doesn't have a
          * valid entry for it.