x86: page.h: make pte_t a union to always include

Make sure pte_t, whatever its definition, has a pte element with type
pteval_t.  This allows common code to access it without needing to be
specifically parameterised on what pagetable mode we're compiling for.
For 32-bit, this means that pte_t becomes a union with "pte" and "{
pte_low, pte_high }" (PAE) or just "pte_low" (non-PAE).

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/asm-x86/pgtable-2level.h b/include/asm-x86/pgtable-2level.h
index d3171c0cb157..f949bb083089 100644
--- a/include/asm-x86/pgtable-2level.h
+++ b/include/asm-x86/pgtable-2level.h
@@ -72,13 +72,13 @@ static inline int pte_exec_kernel(pte_t pte)
         ((((pte).pte_low >> 1) & 0x1f ) + (((pte).pte_low >> 8) << 5 ))
 
 #define pgoff_to_pte(off) \
-        ((pte_t) { (((off) & 0x1f) << 1) + (((off) >> 5) << 8) + _PAGE_FILE })
+        ((pte_t) { .pte_low = (((off) & 0x1f) << 1) + (((off) >> 5) << 8) + _PAGE_FILE })
 
 /* Encode and de-code a swap entry */
 #define __swp_type(x)                   (((x).val >> 1) & 0x1f)
 #define __swp_offset(x)                 ((x).val >> 8)
 #define __swp_entry(type, offset)       ((swp_entry_t) { ((type) << 1) | ((offset) << 8) })
 #define __pte_to_swp_entry(pte)         ((swp_entry_t) { (pte).pte_low })
-#define __swp_entry_to_pte(x)           ((pte_t) { (x).val })
+#define __swp_entry_to_pte(x)           ((pte_t) { .pte = (x).val })
 
 #endif /* _I386_PGTABLE_2LEVEL_H */