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, 7 insertions, 23 deletions

diff --git a/include/asm-x86/page_32.h b/include/asm-x86/page_32.h
index e424bef4395a..11c4b39cada1 100644
--- a/include/asm-x86/page_32.h
+++ b/include/asm-x86/page_32.h
@@ -26,18 +26,12 @@ typedef u64	pgdval_t;
 typedef u64     pgprotval_t;
 typedef u64     phys_addr_t;
 
-typedef struct { unsigned long pte_low, pte_high; } pte_t;
-
-static inline unsigned long long native_pte_val(pte_t pte)
-{
-        return pte.pte_low | ((unsigned long long)pte.pte_high << 32);
-}
-
-static inline pte_t native_make_pte(unsigned long long val)
-{
-        return (pte_t) { .pte_low = val, .pte_high = (val >> 32) } ;
-}
-
+typedef union {
+        struct {
+                unsigned long pte_low, pte_high;
+        };
+        pteval_t pte;
+} pte_t;
 #endif  /* __ASSEMBLY__
  */
 #else  /* !CONFIG_X86_PAE */
@@ -53,19 +47,9 @@ typedef unsigned long	pgdval_t;
 typedef unsigned long   pgprotval_t;
 typedef unsigned long   phys_addr_t;
 
-typedef struct { pteval_t pte_low; } pte_t;
+typedef union { pteval_t pte, pte_low; } pte_t;
 typedef pte_t boot_pte_t;
 
-static inline unsigned long native_pte_val(pte_t pte)
-{
-        return pte.pte_low;
-}
-
-static inline pte_t native_make_pte(unsigned long val)
-{
-        return (pte_t) { .pte_low = val };
-}
-
 #endif  /* __ASSEMBLY__ */
 #endif  /* CONFIG_X86_PAE */