include/asm/mmu_context.h

7 #include <linux/mm.h>
18 extern int init_new_context(struct task_struct *tsk, struct mm_struct *mm);
20 extern void destroy_context(struct mm_struct *mm);
24 extern bool mm_iommu_preregistered(struct mm_struct *mm);
25 extern long mm_iommu_new(struct mm_struct *mm,
28 extern long mm_iommu_newdev(struct mm_struct *mm, unsigned long ua,
31 extern long mm_iommu_put(struct mm_struct *mm,
33 extern void mm_iommu_init(struct mm_struct *mm);
34 extern struct mm_iommu_table_group_mem_t *mm_iommu_lookup(struct mm_struct *mm,
36 extern struct mm_iommu_table_group_mem_t *mm_iommu_get(struct mm_struct *mm,
40 extern bool mm_iommu_is_devmem(struct mm_struct *mm, unsigned long hpa,
45 static inline bool mm_iommu_is_devmem(struct mm_struct *mm, unsigned long hpa,
50 static inline void mm_iommu_init(struct mm_struct *mm) { }
52 extern void switch_slb(struct task_struct *tsk, struct mm_struct *mm);
72 static inline int alloc_extended_context(struct mm_struct *mm,
83 	VM_WARN_ON(mm->context.extended_id[index]);
84 	mm->context.extended_id[index] = context_id;
88 static inline bool need_extra_context(struct mm_struct *mm, unsigned long ea)
92 	context_id = get_user_context(&mm->context, ea);
105 static inline int alloc_extended_context(struct mm_struct *mm,
113 static inline bool need_extra_context(struct mm_struct *mm, unsigned long ea)
119 extern int use_cop(unsigned long acop, struct mm_struct *mm);
120 extern void drop_cop(unsigned long acop, struct mm_struct *mm);
123 static inline void inc_mm_active_cpus(struct mm_struct *mm)
125 	atomic_inc(&mm->context.active_cpus);
128 static inline void dec_mm_active_cpus(struct mm_struct *mm)
130 	VM_WARN_ON_ONCE(atomic_read(&mm->context.active_cpus) <= 0);
131 	atomic_dec(&mm->context.active_cpus);
134 static inline void mm_context_add_copro(struct mm_struct *mm)
141 	if (atomic_inc_return(&mm->context.copros) == 1)
142 		inc_mm_active_cpus(mm);
145 static inline void mm_context_remove_copro(struct mm_struct *mm)
151 	 * flush of the full mm, as the next TLBI may be local and the
168 		radix__flush_all_mm(mm);
170 		c = atomic_dec_if_positive(&mm->context.copros);
175 			dec_mm_active_cpus(mm);
180  * vas_windows counter shows number of open windows in the mm
190 static inline void mm_context_add_vas_window(struct mm_struct *mm)
192 	atomic_inc(&mm->context.vas_windows);
193 	mm_context_add_copro(mm);
196 static inline void mm_context_remove_vas_window(struct mm_struct *mm)
200 	mm_context_remove_copro(mm);
201 	v = atomic_dec_if_positive(&mm->context.vas_windows);
207 static inline void inc_mm_active_cpus(struct mm_struct *mm) { }
208 static inline void dec_mm_active_cpus(struct mm_struct *mm) { }
209 static inline void mm_context_add_copro(struct mm_struct *mm) { }
210 static inline void mm_context_remove_copro(struct mm_struct *mm) { }
241  * After we have set current->mm to a new value, this activates
242  * the context for the new mm so we see the new mappings.
253 static inline void enter_lazy_tlb(struct mm_struct *mm,
261 extern void arch_exit_mmap(struct mm_struct *mm);
263 static inline void arch_unmap(struct mm_struct *mm,
266 	unsigned long vdso_base = (unsigned long)mm->context.vdso;
269 		mm->context.vdso = NULL;
275 void arch_dup_pkeys(struct mm_struct *oldmm, struct mm_struct *mm);
284 #define pkey_mm_init(mm)
285 #define arch_dup_pkeys(oldmm, mm)
295 				struct mm_struct *mm)
297 	arch_dup_pkeys(oldmm, mm);