x86: pgtable: unify pte accessors

Make various pte accessors common.

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, 4 insertions, 39 deletions

diff --git a/include/asm-x86/pgtable_64.h b/include/asm-x86/pgtable_64.h
index 77038d8..987f51f 100644
--- a/include/asm-x86/pgtable_64.h
+++ b/include/asm-x86/pgtable_64.h
@@ -101,18 +101,18 @@ static inline void pgd_clear (pgd_t * pgd)
 	set_pgd(pgd, __pgd(0));
 }
 
-#define ptep_get_and_clear(mm,addr,xp)	__pte(xchg(&(xp)->pte, 0))
+#define native_ptep_get_and_clear(xp) __pte(xchg(&(xp)->pte, 0))
 
 struct mm_struct;
 
-static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm, unsigned long addr, pte_t *ptep, int full)
+static inline pte_t native_ptep_get_and_clear_full(struct mm_struct *mm, unsigned long addr, pte_t *ptep, int full)
 {
 	pte_t pte;
 	if (full) {
 		pte = *ptep;
 		*ptep = __pte(0);
 	} else {
-		pte = ptep_get_and_clear(mm, addr, ptep);
+		pte = native_ptep_get_and_clear(ptep);
 	}
 	return pte;
 }
@@ -158,26 +158,12 @@ static inline unsigned long pmd_bad(pmd_t pmd)
 
 #define pte_none(x)	(!pte_val(x))
 #define pte_present(x)	(pte_val(x) & (_PAGE_PRESENT | _PAGE_PROTNONE))
-#define pte_clear(mm,addr,xp)	do { set_pte_at(mm, addr, xp, __pte(0)); } while (0)
+#define native_pte_clear(mm,addr,xp)	do { set_pte_at(mm, addr, xp, __pte(0)); } while (0)
 
 #define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT))	/* FIXME: is this right? */
 #define pte_page(x)	pfn_to_page(pte_pfn(x))
 #define pte_pfn(x)  ((pte_val(x) & __PHYSICAL_MASK) >> PAGE_SHIFT)
 
-struct vm_area_struct;
-
-static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep)
-{
-	if (!pte_young(*ptep))
-		return 0;
-	return test_and_clear_bit(_PAGE_BIT_ACCESSED, &ptep->pte);
-}
-
-static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
-{
-	clear_bit(_PAGE_BIT_RW, &ptep->pte);
-}
-
 /*
  * Macro to mark a page protection value as "uncacheable".
  */
@@ -243,22 +229,6 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr,
 
 #define update_mmu_cache(vma,address,pte) do { } while (0)
 
-/* We only update the dirty/accessed state if we set
- * the dirty bit by hand in the kernel, since the hardware
- * will do the accessed bit for us, and we don't want to
- * race with other CPU's that might be updating the dirty
- * bit at the same time. */
-#define  __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
-#define ptep_set_access_flags(__vma, __address, __ptep, __entry, __dirty) \
-({									  \
-	int __changed = !pte_same(*(__ptep), __entry);			  \
-	if (__changed && __dirty) {					  \
-		set_pte(__ptep, __entry);			  	  \
-		flush_tlb_page(__vma, __address);		  	  \
-	}								  \
-	__changed;							  \
-})
-
 /* Encode and de-code a swap entry */
 #define __swp_type(x)			(((x).val >> 1) & 0x3f)
 #define __swp_offset(x)			((x).val >> 8)
@@ -290,12 +260,7 @@ pte_t *lookup_address(unsigned long addr);
 #define	kc_offset_to_vaddr(o) \
    (((o) & (1UL << (__VIRTUAL_MASK_SHIFT-1))) ? ((o) | (~__VIRTUAL_MASK)) : (o))
 
-#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
-#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
-#define __HAVE_ARCH_PTEP_GET_AND_CLEAR_FULL
-#define __HAVE_ARCH_PTEP_SET_WRPROTECT
 #define __HAVE_ARCH_PTE_SAME
-#include <asm-generic/pgtable.h>
 #endif /* !__ASSEMBLY__ */
 
 #endif /* _X86_64_PGTABLE_H */