X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-ppc%2Fpgtable.h;h=063ad91cbbcc273e3fa69c9b51e3c957f6fc1538;hb=df3d80f5a5c74168be42788364d13cf6c83c7b9c;hp=bed452d4a5f0b1486990b223f7a1e711ae20ac81;hpb=932c37c375cca25175f9b6acee4c75d7a96d985f;p=linux-2.6

diff --git a/include/asm-ppc/pgtable.h b/include/asm-ppc/pgtable.h
index bed452d4a5..063ad91cbb 100644
--- a/include/asm-ppc/pgtable.h
+++ b/include/asm-ppc/pgtable.h
@@ -533,9 +533,7 @@ static inline int pgd_present(pgd_t pgd)	{ return 1; }
  * The following only work if pte_present() is true.
  * Undefined behaviour if not..
  */
-static inline int pte_read(pte_t pte)		{ return pte_val(pte) & _PAGE_USER; }
 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; }
 static inline int pte_file(pte_t pte)		{ return pte_val(pte) & _PAGE_FILE; }
@@ -543,21 +541,13 @@ 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; }
 
-static inline pte_t pte_rdprotect(pte_t pte) {
-	pte_val(pte) &= ~_PAGE_USER; return pte; }
 static inline pte_t pte_wrprotect(pte_t pte) {
 	pte_val(pte) &= ~(_PAGE_RW | _PAGE_HWWRITE); return pte; }
-static inline pte_t pte_exprotect(pte_t pte) {
-	pte_val(pte) &= ~_PAGE_EXEC; return pte; }
 static inline pte_t pte_mkclean(pte_t pte) {
 	pte_val(pte) &= ~(_PAGE_DIRTY | _PAGE_HWWRITE); return pte; }
 static inline pte_t pte_mkold(pte_t pte) {
 	pte_val(pte) &= ~_PAGE_ACCESSED; return pte; }
 
-static inline pte_t pte_mkread(pte_t pte) {
-	pte_val(pte) |= _PAGE_USER; return pte; }
-static inline pte_t pte_mkexec(pte_t pte) {
-	pte_val(pte) |= _PAGE_USER | _PAGE_EXEC; return pte; }
 static inline pte_t pte_mkwrite(pte_t pte) {
 	pte_val(pte) |= _PAGE_RW; return pte; }
 static inline pte_t pte_mkdirty(pte_t pte) {
@@ -664,13 +654,6 @@ static inline int __ptep_test_and_clear_young(unsigned int context, unsigned lon
 #define ptep_test_and_clear_young(__vma, __addr, __ptep) \
 	__ptep_test_and_clear_young((__vma)->vm_mm->context.id, __addr, __ptep)
 
-#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_DIRTY
-static inline int ptep_test_and_clear_dirty(struct vm_area_struct *vma,
-					    unsigned long addr, pte_t *ptep)
-{
-	return (pte_update(ptep, (_PAGE_DIRTY | _PAGE_HWWRITE), 0) & _PAGE_DIRTY) != 0;
-}
-
 #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)
@@ -694,10 +677,14 @@ static inline void __ptep_set_access_flags(pte_t *ptep, pte_t entry, int dirty)
 }
 
 #define  ptep_set_access_flags(__vma, __address, __ptep, __entry, __dirty) \
-	do {								   \
-		__ptep_set_access_flags(__ptep, __entry, __dirty);	   \
-		flush_tlb_page_nohash(__vma, __address);	       	   \
-	} while(0)
+({									   \
+	int __changed = !pte_same(*(__ptep), __entry);			   \
+	if (__changed) {						   \
+		__ptep_set_access_flags(__ptep, __entry, __dirty);    	   \
+		flush_tlb_page_nohash(__vma, __address);		   \
+	}								   \
+	__changed;							   \
+})
 
 /*
  * Macro to mark a page protection value as "uncacheable".
@@ -778,14 +765,6 @@ extern void paging_init(void);
 #define pte_to_pgoff(pte)	(pte_val(pte) >> 3)
 #define pgoff_to_pte(off)	((pte_t) { ((off) << 3) | _PAGE_FILE })
 
-/* CONFIG_APUS */
-/* For virtual address to physical address conversion */
-extern void cache_clear(__u32 addr, int length);
-extern void cache_push(__u32 addr, int length);
-extern int mm_end_of_chunk (unsigned long addr, int len);
-extern unsigned long iopa(unsigned long addr);
-extern unsigned long mm_ptov(unsigned long addr) __attribute_const__;
-
 /* Values for nocacheflag and cmode */
 /* These are not used by the APUS kernel_map, but prevents
    compilation errors. */