1 files changed, 30 insertions, 26 deletions

diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 0bd18de9fd97..432932ad087f 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -103,6 +103,7 @@ static inline pteval_t __phys_to_pte_val(phys_addr_t phys)
 #define pte_young(pte)		(!!(pte_val(pte) & PTE_AF))
 #define pte_special(pte)	(!!(pte_val(pte) & PTE_SPECIAL))
 #define pte_write(pte)		(!!(pte_val(pte) & PTE_WRITE))
+#define pte_rdonly(pte)		(!!(pte_val(pte) & PTE_RDONLY))
 #define pte_user(pte)		(!!(pte_val(pte) & PTE_USER))
 #define pte_user_exec(pte)	(!(pte_val(pte) & PTE_UXN))
 #define pte_cont(pte)		(!!(pte_val(pte) & PTE_CONT))
@@ -120,7 +121,7 @@ static inline pteval_t __phys_to_pte_val(phys_addr_t phys)
 	(__boundary - 1 < (end) - 1) ? __boundary : (end);			\
 })
 
-#define pte_hw_dirty(pte)	(pte_write(pte) && !(pte_val(pte) & PTE_RDONLY))
+#define pte_hw_dirty(pte)	(pte_write(pte) && !pte_rdonly(pte))
 #define pte_sw_dirty(pte)	(!!(pte_val(pte) & PTE_DIRTY))
 #define pte_dirty(pte)		(pte_sw_dirty(pte) || pte_hw_dirty(pte))
 
@@ -212,7 +213,7 @@ static inline pte_t pte_wrprotect(pte_t pte)
 	 * clear), set the PTE_DIRTY bit.
 	 */
 	if (pte_hw_dirty(pte))
-		pte = pte_mkdirty(pte);
+		pte = set_pte_bit(pte, __pgprot(PTE_DIRTY));
 
 	pte = clear_pte_bit(pte, __pgprot(PTE_WRITE));
 	pte = set_pte_bit(pte, __pgprot(PTE_RDONLY));
@@ -337,30 +338,29 @@ static inline void __set_pte_at(struct mm_struct *mm, unsigned long addr,
 	 * don't expose tags (instruction fetches don't check tags).
 	 */
 	if (system_supports_mte() && pte_access_permitted(pte, false) &&
-	    !pte_special(pte)) {
-		pte_t old_pte = READ_ONCE(*ptep);
-		/*
-		 * We only need to synchronise if the new PTE has tags enabled
-		 * or if swapping in (in which case another mapping may have
-		 * set tags in the past even if this PTE isn't tagged).
-		 * (!pte_none() && !pte_present()) is an open coded version of
-		 * is_swap_pte()
-		 */
-		if (pte_tagged(pte) || (!pte_none(old_pte) && !pte_present(old_pte)))
-			mte_sync_tags(old_pte, pte);
-	}
+	    !pte_special(pte) && pte_tagged(pte))
+		mte_sync_tags(pte);
 
 	__check_safe_pte_update(mm, ptep, pte);
 
 	set_pte(ptep, pte);
 }
 
-static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
-			      pte_t *ptep, pte_t pte)
+static inline void set_ptes(struct mm_struct *mm, unsigned long addr,
+			      pte_t *ptep, pte_t pte, unsigned int nr)
 {
-	page_table_check_pte_set(mm, addr, ptep, pte);
-	return __set_pte_at(mm, addr, ptep, pte);
+	page_table_check_ptes_set(mm, ptep, pte, nr);
+
+	for (;;) {
+		__set_pte_at(mm, addr, ptep, pte);
+		if (--nr == 0)
+			break;
+		ptep++;
+		addr += PAGE_SIZE;
+		pte_val(pte) += PAGE_SIZE;
+	}
 }
+#define set_ptes set_ptes
 
 /*
  * Huge pte definitions.
@@ -534,14 +534,14 @@ static inline pmd_t pmd_mkdevmap(pmd_t pmd)
 static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr,
 			      pmd_t *pmdp, pmd_t pmd)
 {
-	page_table_check_pmd_set(mm, addr, pmdp, pmd);
+	page_table_check_pmd_set(mm, pmdp, pmd);
 	return __set_pte_at(mm, addr, (pte_t *)pmdp, pmd_pte(pmd));
 }
 
 static inline void set_pud_at(struct mm_struct *mm, unsigned long addr,
 			      pud_t *pudp, pud_t pud)
 {
-	page_table_check_pud_set(mm, addr, pudp, pud);
+	page_table_check_pud_set(mm, pudp, pud);
 	return __set_pte_at(mm, addr, (pte_t *)pudp, pud_pte(pud));
 }
 
@@ -823,7 +823,8 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 			      PTE_ATTRINDX_MASK;
 	/* preserve the hardware dirty information */
 	if (pte_hw_dirty(pte))
-		pte = pte_mkdirty(pte);
+		pte = set_pte_bit(pte, __pgprot(PTE_DIRTY));
+
 	pte_val(pte) = (pte_val(pte) & ~mask) | (pgprot_val(newprot) & mask);
 	return pte;
 }
@@ -938,7 +939,7 @@ static inline pte_t ptep_get_and_clear(struct mm_struct *mm,
 {
 	pte_t pte = __pte(xchg_relaxed(&pte_val(*ptep), 0));
 
-	page_table_check_pte_clear(mm, address, pte);
+	page_table_check_pte_clear(mm, pte);
 
 	return pte;
 }
@@ -950,7 +951,7 @@ static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
 {
 	pmd_t pmd = __pmd(xchg_relaxed(&pmd_val(*pmdp), 0));
 
-	page_table_check_pmd_clear(mm, address, pmd);
+	page_table_check_pmd_clear(mm, pmd);
 
 	return pmd;
 }
@@ -986,7 +987,7 @@ static inline void pmdp_set_wrprotect(struct mm_struct *mm,
 static inline pmd_t pmdp_establish(struct vm_area_struct *vma,
 		unsigned long address, pmd_t *pmdp, pmd_t pmd)
 {
-	page_table_check_pmd_set(vma->vm_mm, address, pmdp, pmd);
+	page_table_check_pmd_set(vma->vm_mm, pmdp, pmd);
 	return __pmd(xchg_relaxed(&pmd_val(*pmdp), pmd_val(pmd)));
 }
 #endif
@@ -1059,8 +1060,9 @@ static inline void arch_swap_restore(swp_entry_t entry, struct folio *folio)
 /*
  * On AArch64, the cache coherency is handled via the set_pte_at() function.
  */
-static inline void update_mmu_cache(struct vm_area_struct *vma,
-				    unsigned long addr, pte_t *ptep)
+static inline void update_mmu_cache_range(struct vm_fault *vmf,
+		struct vm_area_struct *vma, unsigned long addr, pte_t *ptep,
+		unsigned int nr)
 {
 	/*
 	 * We don't do anything here, so there's a very small chance of
@@ -1069,6 +1071,8 @@ static inline void update_mmu_cache(struct vm_area_struct *vma,
 	 */
 }
 
+#define update_mmu_cache(vma, addr, ptep) \
+	update_mmu_cache_range(NULL, vma, addr, ptep, 1)
 #define update_mmu_cache_pmd(vma, address, pmd) do { } while (0)
 
 #ifdef CONFIG_ARM64_PA_BITS_52