microblaze: Add _PAGE_FILE macros to pgtable.h

We need to define _PAGE_FILE macro and change pte
functions. Microblaze use the same MMU as PowerPC
that's why we define _PAGE_FILE in the same style.
This change fixed remap_file_pages01 LTP test.

Signed-off-by: Michal Simek <monstr@monstr.eu>

diff --git a/arch/microblaze/include/asm/pgtable.h b/arch/microblaze/include/asm/pgtable.h
index 4c57a58..cc3a4df 100644 (file)
--- a/arch/microblaze/include/asm/pgtable.h
+++ b/arch/microblaze/include/asm/pgtable.h
@@ -185,6 +185,7 @@ static inline pte_t pte_mkspecial(pte_t pte)        { return pte; }
 
 /* Definitions for MicroBlaze. */
 #define        _PAGE_GUARDED   0x001   /* G: page is guarded from prefetch */
+#define _PAGE_FILE     0x001   /* when !present: nonlinear file mapping */
 #define _PAGE_PRESENT  0x002   /* software: PTE contains a translation */
 #define        _PAGE_NO_CACHE  0x004   /* I: caching is inhibited */
 #define        _PAGE_WRITETHRU 0x008   /* W: caching is write-through */
@@ -320,8 +321,7 @@ static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_RW; }
 static inline int pte_exec(pte_t pte)  { return pte_val(pte) & _PAGE_EXEC; }
 static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
 static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
-/* FIXME */
-static inline int pte_file(pte_t pte)          { return 0; }
+static inline int pte_file(pte_t pte)  { return pte_val(pte) & _PAGE_FILE; }
 
 static inline void pte_uncache(pte_t pte) { pte_val(pte) |= _PAGE_NO_CACHE; }
 static inline void pte_cache(pte_t pte)   { pte_val(pte) &= ~_PAGE_NO_CACHE; }
@@ -488,7 +488,7 @@ static inline pmd_t *pmd_offset(pgd_t *dir, unsigned long address)
 /* Encode and decode a nonlinear file mapping entry */
 #define PTE_FILE_MAX_BITS      29
 #define pte_to_pgoff(pte)      (pte_val(pte) >> 3)
-#define pgoff_to_pte(off)      ((pte_t) { ((off) << 3) })
+#define pgoff_to_pte(off)      ((pte_t) { ((off) << 3) | _PAGE_FILE })
 
 extern pgd_t swapper_pg_dir[PTRS_PER_PGD];