powerpc/nohash: Deduplicate pte helpers

Deduplicate following helpers that are identical on
nohash/32 and nohash/64:
  pte_mkwrite_novma()
  pte_mkdirty()
  pte_mkyoung()
  pte_wrprotect()
  pte_mkexec()
  pte_young()
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/485f3cbafaa948143f92692e17ca652dfed68da2.1695659959.git.christophe.leroy@csgroup.eu

arch/powerpc/include/asm/nohash/32/pgtable.h

@@ -156,37 +156,6 @@
 #define pte_clear(mm, addr, ptep) \
 	do { pte_update(mm, addr, ptep, ~0, 0, 0); } while (0)
 
-#ifndef pte_mkwrite_novma
-static inline pte_t pte_mkwrite_novma(pte_t pte)
-{
-	return __pte(pte_val(pte) | _PAGE_RW);
-}
-#endif
-
-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);
-}
-
-#ifndef pte_wrprotect
-static inline pte_t pte_wrprotect(pte_t pte)
-{
-	return __pte(pte_val(pte) & ~_PAGE_RW);
-}
-#endif
-
-#ifndef pte_mkexec
-static inline pte_t pte_mkexec(pte_t pte)
-{
-	return __pte(pte_val(pte) | _PAGE_EXEC);
-}
-#endif
-
 #define pmd_none(pmd)		(!pmd_val(pmd))
 #define	pmd_bad(pmd)		(pmd_val(pmd) & _PMD_BAD)
 #define	pmd_present(pmd)	(pmd_val(pmd) & _PMD_PRESENT_MASK)
@@ -238,11 +207,6 @@ static inline void __ptep_set_access_flags(struct vm_area_struct *vma,
 }
 #endif
 
-static inline int pte_young(pte_t pte)
-{
-	return pte_val(pte) & _PAGE_ACCESSED;
-}
-
 /*
  * Note that on Book E processors, the pmd contains the kernel virtual
  * (lowmem) address of the pte page.  The physical address is less useful

arch/powerpc/include/asm/nohash/64/pgtable.h

@@ -80,26 +80,6 @@
 #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)
 
@@ -165,11 +145,6 @@ static inline void p4d_set(p4d_t *p4dp, unsigned long val)
 	*p4dp = __p4d(val);
 }
 
-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)
 {

arch/powerpc/include/asm/nohash/pgtable.h

@@ -70,6 +70,37 @@ static inline pte_basic_t pte_update(struct mm_struct *mm, unsigned long addr, p
 #endif
 
 /* Generic accessors to PTE bits */
+#ifndef pte_mkwrite_novma
+static inline pte_t pte_mkwrite_novma(pte_t pte)
+{
+	return __pte(pte_val(pte) | _PAGE_RW);
+}
+#endif
+
+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);
+}
+
+#ifndef pte_wrprotect
+static inline pte_t pte_wrprotect(pte_t pte)
+{
+	return __pte(pte_val(pte) & ~_PAGE_RW);
+}
+#endif
+
+#ifndef pte_mkexec
+static inline pte_t pte_mkexec(pte_t pte)
+{
+	return __pte(pte_val(pte) | _PAGE_EXEC);
+}
+#endif
+
 #ifndef pte_write
 static inline int pte_write(pte_t pte)
 {
@@ -96,6 +127,11 @@ static inline bool pte_hw_valid(pte_t pte)
 	return pte_val(pte) & _PAGE_PRESENT;
 }
 
+static inline int pte_young(pte_t pte)
+{
+	return pte_val(pte) & _PAGE_ACCESSED;
+}
+
 /*
  * Don't just check for any non zero bits in __PAGE_USER, since for book3e
  * and PTE_64BIT, PAGE_KERNEL_X contains _PAGE_BAP_SR which is also in