diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 30588e12752b..9197acde622a 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -886,20 +886,6 @@ static inline void update_mmu_cache(struct vm_area_struct *vma,
 #define phys_to_ttbr(addr)	(addr)
 #endif
 
-/*
- * On arm64 without hardware Access Flag, copying from user will fail because
- * the pte is old and cannot be marked young. So we always end up with zeroed
- * page after fork() + CoW for pfn mappings. We don't always have a
- * hardware-managed access flag on arm64.
- */
-static inline bool arch_faults_on_old_pte(void)
-{
-	WARN_ON(preemptible());
-
-	return !cpu_has_hw_af();
-}
-#define arch_faults_on_old_pte arch_faults_on_old_pte
-
 #endif /* !__ASSEMBLY__ */
 
 #endif /* __ASM_PGTABLE_H */