#ifndef _ASM_GENERIC_PGTABLE_UFFD_H#define _ASM_GENERIC_PGTABLE_UFFD_H /* * Some platforms can customize the uffd-wp bit, making it unavailable * even if the architecture provides the resource. * Adding this API allows architectures to add their own checks for the * devices on which the kernel is running. * Note: When overriding it, please make sure the * CONFIG_HAVE_ARCH_USERFAULTFD_WP is part of this macro. */#ifndef pgtable_supports_uffd_wp#define pgtable_supports_uffd_wp()	IS_ENABLED(CONFIG_HAVE_ARCH_USERFAULTFD_WP)#endif static inline bool uffd_supports_wp_marker(void){	return pgtable_supports_uffd_wp() && IS_ENABLED(CONFIG_PTE_MARKER_UFFD_WP);} #ifndef CONFIG_HAVE_ARCH_USERFAULTFD_WPstatic __always_inline int pte_uffd_wp(pte_t pte){	return 0;} static __always_inline int pmd_uffd_wp(pmd_t pmd){	return 0;} static __always_inline pte_t pte_mkuffd_wp(pte_t pte){	return pte;} static __always_inline pmd_t pmd_mkuffd_wp(pmd_t pmd){	return pmd;} static __always_inline pte_t pte_clear_uffd_wp(pte_t pte){	return pte;} static __always_inline pmd_t pmd_clear_uffd_wp(pmd_t pmd){	return pmd;} static __always_inline pte_t pte_swp_mkuffd_wp(pte_t pte){	return pte;} static __always_inline int pte_swp_uffd_wp(pte_t pte){	return 0;} static __always_inline pte_t pte_swp_clear_uffd_wp(pte_t pte){	return pte;} static inline pmd_t pmd_swp_mkuffd_wp(pmd_t pmd){	return pmd;} static inline int pmd_swp_uffd_wp(pmd_t pmd){	return 0;} static inline pmd_t pmd_swp_clear_uffd_wp(pmd_t pmd){	return pmd;}#endif /* CONFIG_HAVE_ARCH_USERFAULTFD_WP */ #endif /* _ASM_GENERIC_PGTABLE_UFFD_H */