1 files changed, 3 insertions, 117 deletions

diff --git a/arch/powerpc/include/asm/nohash/64/pgtable.h b/arch/powerpc/include/asm/nohash/64/pgtable.h
index eb6891e34cbd..2202c78730e8 100644
--- a/arch/powerpc/include/asm/nohash/64/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/64/pgtable.h
@@ -57,6 +57,7 @@
 #define IOREMAP_START	(ioremap_bot)
 #define IOREMAP_END	(KERN_IO_START + KERN_IO_SIZE - FIXADDR_SIZE)
 #define FIXADDR_SIZE	SZ_32M
+#define FIXADDR_TOP	(IOREMAP_END + FIXADDR_SIZE)
 
 /*
  * Defines the address of the vmemap area, in its own region on
@@ -74,37 +75,11 @@
 
 #define PTE_RPN_MASK	(~((1UL << PTE_RPN_SHIFT) - 1))
 
-/*
- * _PAGE_CHG_MASK masks of bits that are to be preserved across
- * pgprot changes.
- */
-#define _PAGE_CHG_MASK	(PTE_RPN_MASK | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_SPECIAL)
-
 #define H_PAGE_4K_PFN 0
 
 #ifndef __ASSEMBLY__
 /* pte_clear moved to later in this file */
 
-static inline pte_t pte_mkwrite_novma(pte_t pte)
-{
-	return __pte(pte_val(pte) | _PAGE_RW);
-}
-
-static inline pte_t pte_mkdirty(pte_t pte)
-{
-	return __pte(pte_val(pte) | _PAGE_DIRTY);
-}
-
-static inline pte_t pte_mkyoung(pte_t pte)
-{
-	return __pte(pte_val(pte) | _PAGE_ACCESSED);
-}
-
-static inline pte_t pte_wrprotect(pte_t pte)
-{
-	return __pte(pte_val(pte) & ~_PAGE_RW);
-}
-
 #define PMD_BAD_BITS		(PTE_TABLE_SIZE-1)
 #define PUD_BAD_BITS		(PMD_TABLE_SIZE-1)
 
@@ -170,107 +145,20 @@ static inline void p4d_set(p4d_t *p4dp, unsigned long val)
 	*p4dp = __p4d(val);
 }
 
-/* Atomic PTE updates */
-static inline unsigned long pte_update(struct mm_struct *mm,
-				       unsigned long addr,
-				       pte_t *ptep, unsigned long clr,
-				       unsigned long set,
-				       int huge)
-{
-	unsigned long old = pte_val(*ptep);
-	*ptep = __pte((old & ~clr) | set);
-
-	/* huge pages use the old page table lock */
-	if (!huge)
-		assert_pte_locked(mm, addr);
-
-	return old;
-}
-
-static inline int pte_young(pte_t pte)
-{
-	return pte_val(pte) & _PAGE_ACCESSED;
-}
-
-static inline int __ptep_test_and_clear_young(struct mm_struct *mm,
-					      unsigned long addr, pte_t *ptep)
-{
-	unsigned long old;
-
-	if (!pte_young(*ptep))
-		return 0;
-	old = pte_update(mm, addr, ptep, _PAGE_ACCESSED, 0, 0);
-	return (old & _PAGE_ACCESSED) != 0;
-}
-#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
-#define ptep_test_and_clear_young(__vma, __addr, __ptep)		   \
-({									   \
-	int __r;							   \
-	__r = __ptep_test_and_clear_young((__vma)->vm_mm, __addr, __ptep); \
-	__r;								   \
-})
-
-#define __HAVE_ARCH_PTEP_SET_WRPROTECT
-static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr,
-				      pte_t *ptep)
-{
-
-	if ((pte_val(*ptep) & _PAGE_RW) == 0)
-		return;
-
-	pte_update(mm, addr, ptep, _PAGE_RW, 0, 0);
-}
-
 #define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 					   unsigned long addr, pte_t *ptep)
 {
-	if ((pte_val(*ptep) & _PAGE_RW) == 0)
-		return;
-
-	pte_update(mm, addr, ptep, _PAGE_RW, 0, 1);
+	pte_update(mm, addr, ptep, _PAGE_WRITE, 0, 1);
 }
 
 #define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH
 #define ptep_clear_flush_young(__vma, __address, __ptep)		\
 ({									\
-	int __young = __ptep_test_and_clear_young((__vma)->vm_mm, __address, \
-						  __ptep);		\
+	int __young = ptep_test_and_clear_young(__vma, __address, __ptep);\
 	__young;							\
 })
 
-#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
-static inline pte_t ptep_get_and_clear(struct mm_struct *mm,
-				       unsigned long addr, pte_t *ptep)
-{
-	unsigned long old = pte_update(mm, addr, ptep, ~0UL, 0, 0);
-	return __pte(old);
-}
-
-static inline void pte_clear(struct mm_struct *mm, unsigned long addr,
-			     pte_t * ptep)
-{
-	pte_update(mm, addr, ptep, ~0UL, 0, 0);
-}
-
-
-/* Set the dirty and/or accessed bits atomically in a linux PTE */
-static inline void __ptep_set_access_flags(struct vm_area_struct *vma,
-					   pte_t *ptep, pte_t entry,
-					   unsigned long address,
-					   int psize)
-{
-	unsigned long bits = pte_val(entry) &
-		(_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC);
-
-	unsigned long old = pte_val(*ptep);
-	*ptep = __pte(old | bits);
-
-	flush_tlb_page(vma, address);
-}
-
-#define pte_ERROR(e) \
-	pr_err("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))
 #define pmd_ERROR(e) \
 	pr_err("%s:%d: bad pmd %08lx.\n", __FILE__, __LINE__, pmd_val(e))
 #define pgd_ERROR(e) \
@@ -310,8 +198,6 @@ static inline void __ptep_set_access_flags(struct vm_area_struct *vma,
 /* We borrow MSB 56 (LSB 7) to store the exclusive marker in swap PTEs. */
 #define _PAGE_SWP_EXCLUSIVE	0x80
 
-int map_kernel_page(unsigned long ea, unsigned long pa, pgprot_t prot);
-void unmap_kernel_page(unsigned long va);
 extern int __meminit vmemmap_create_mapping(unsigned long start,
 					    unsigned long page_size,
 					    unsigned long phys);