1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Define generic no-op hooks for arch_dup_mmap, arch_exit_mmap 4 * and arch_unmap to be included in asm-FOO/mmu_context.h for any 5 * arch FOO which doesn't need to hook these. 6 */ 7 #ifndef _ASM_GENERIC_MM_HOOKS_H 8 #define _ASM_GENERIC_MM_HOOKS_H 9 10 static inline int arch_dup_mmap(struct mm_struct *oldmm, 11 struct mm_struct *mm) 12 { 13 return 0; 14 } 15 16 static inline void arch_exit_mmap(struct mm_struct *mm) 17 { 18 } 19 20 static inline void arch_unmap(struct mm_struct *mm, 21 struct vm_area_struct *vma, 22 unsigned long start, unsigned long end) 23 { 24 } 25 26 static inline void arch_bprm_mm_init(struct mm_struct *mm, 27 struct vm_area_struct *vma) 28 { 29 } 30 31 static inline bool arch_vma_access_permitted(struct vm_area_struct *vma, 32 bool write, bool execute, bool foreign) 33 { 34 /* by default, allow everything */ 35 return true; 36 } 37 #endif /* _ASM_GENERIC_MM_HOOKS_H */ 38