44 static inline int pte_looks_normal(pte_t pte)  in pte_looks_normal()  argument
46 	return (pte_val(pte) &  in pte_looks_normal()
51 static struct page *maybe_pte_to_page(pte_t pte)  in maybe_pte_to_page()  argument
53 	unsigned long pfn = pte_pfn(pte);  in maybe_pte_to_page()
72 static pte_t set_pte_filter(pte_t pte)  in set_pte_filter()  argument
74 	pte = __pte(pte_val(pte) & ~_PAGE_HPTEFLAGS);  in set_pte_filter()
75 	if (pte_looks_normal(pte) && !(cpu_has_feature(CPU_FTR_COHERENT_ICACHE) ||  in set_pte_filter()
77 		struct page *pg = maybe_pte_to_page(pte);  in set_pte_filter()
79 			return pte;  in set_pte_filter()
85 	return pte;  in set_pte_filter()
88 static pte_t set_access_flags_filter(pte_t pte, struct vm_area_struct *vma,  in set_access_flags_filter()  argument
91 	return pte;  in set_access_flags_filter()
100 static pte_t set_pte_filter(pte_t pte)  in set_pte_filter()  argument
105 	if (!(pte_val(pte) & _PAGE_EXEC) || !pte_looks_normal(pte))  in set_pte_filter()
106 		return pte;  in set_pte_filter()
109 	pg = maybe_pte_to_page(pte);  in set_pte_filter()
111 		return pte;  in set_pte_filter()
115 		return pte;  in set_pte_filter()
121 		return pte;  in set_pte_filter()
125 	return __pte(pte_val(pte) & ~_PAGE_EXEC);  in set_pte_filter()
128 static pte_t set_access_flags_filter(pte_t pte, struct vm_area_struct *vma,  in set_access_flags_filter()  argument
138 	if (dirty || (pte_val(pte) & _PAGE_EXEC) || !is_exec_fault())  in set_access_flags_filter()
139 		return pte;  in set_access_flags_filter()
147 		return pte;  in set_access_flags_filter()
151 	pg = maybe_pte_to_page(pte);  in set_access_flags_filter()
164 	return __pte(pte_val(pte) | _PAGE_EXEC);  in set_access_flags_filter()
173 		pte_t pte)  in set_pte_at()  argument
187 	pte = set_pte_filter(pte);  in set_pte_at()
190 	__set_pte_at(mm, addr, ptep, pte, 0);  in set_pte_at()