diff --git a/reactos/ntoskrnl/include/internal/arm/mm.h b/reactos/ntoskrnl/include/internal/arm/mm.h
index 0631351a99a..889ef77a8d0 100644
--- a/reactos/ntoskrnl/include/internal/arm/mm.h
+++ b/reactos/ntoskrnl/include/internal/arm/mm.h
@@ -175,6 +175,7 @@ typedef enum _ARM_DOMAIN
 #define MiGetPdeOffset(x) (((ULONG)(x)) >> 22)
 
 #define PTE_BASE    0xC0000000
+#define PTE_TOP    0xC03FFFFF
 #define PDE_BASE    0xC1000000
 #define HYPER_SPACE 0xC1100000
 
@@ -203,6 +204,8 @@ PULONG MmGetPageDirectory(VOID);
 
 #define MI_MAKE_LOCAL_PAGE(x)      ((x)->u.Hard.NonGlobal = 1)
 #define MI_MAKE_DIRTY_PAGE(x)      
+#define MI_MAKE_OWNER_PAGE(x)      ((x)->u.Hard.Access = 1) // FIXFIX
+#define MI_MAKE_WRITE_PAGE(x)      ((x)->u.Hard.ExtendedAccess = 1) // FIXFIX
 #define MI_PAGE_DISABLE_CACHE(x)   ((x)->u.Hard.Cached = 0)
 #define MI_PAGE_WRITE_THROUGH(x)   ((x)->u.Hard.Buffered = 0)
 #define MI_PAGE_WRITE_COMBINED(x)  ((x)->u.Hard.Buffered = 1)
diff --git a/reactos/ntoskrnl/include/internal/i386/mm.h b/reactos/ntoskrnl/include/internal/i386/mm.h
index 80da0c48ed4..a649cbb4ae2 100644
--- a/reactos/ntoskrnl/include/internal/i386/mm.h
+++ b/reactos/ntoskrnl/include/internal/i386/mm.h
@@ -17,6 +17,7 @@ PULONG MmGetPageDirectory(VOID);
 
 #define PTE_BASE    0xC0000000
 #define PDE_BASE    0xC0300000
+#define PTE_TOP     0xC03FFFFF
 #define HYPER_SPACE 0xC0400000
 
 /* Converting address to a corresponding PDE or PTE entry */
@@ -47,5 +48,7 @@ PULONG MmGetPageDirectory(VOID);
 #define MI_IS_PAGE_WRITEABLE(x)    ((x)->u.Hard.Write == 1)
 #define MI_IS_PAGE_COPY_ON_WRITE(x)((x)->u.Hard.CopyOnWrite == 1)
 #define MI_IS_PAGE_DIRTY(x)        ((x)->u.Hard.Dirty == 1)
+#define MI_MAKE_OWNER_PAGE(x)      ((x)->u.Hard.Owner = 1)
+#define MI_MAKE_WRITE_PAGE(x)      ((x)->u.Hard.Write = 1)
 
 #endif /* __NTOSKRNL_INCLUDE_INTERNAL_I386_MM_H */