13 #include <linux/mm.h>
95 static int hash__init_new_context(struct mm_struct *mm)  in hash__init_new_context()  argument
99 	mm->context.hash_context = kmalloc(sizeof(struct hash_mm_context),  in hash__init_new_context()
101 	if (!mm->context.hash_context)  in hash__init_new_context()
111 	 * initialize context slice details for newly allocated mm's (which will  in hash__init_new_context()
118 	if (mm->context.id == 0) {  in hash__init_new_context()
119 		memset(mm->context.hash_context, 0, sizeof(struct hash_mm_context));  in hash__init_new_context()
120 		slice_init_new_context_exec(mm);  in hash__init_new_context()
122 		/* This is fork. Copy hash_context details from current->mm */  in hash__init_new_context()
123 …memcpy(mm->context.hash_context, current->mm->context.hash_context, sizeof(struct hash_mm_context)…  in hash__init_new_context()
126 		if (current->mm->context.hash_context->spt) {  in hash__init_new_context()
127 			mm->context.hash_context->spt = kmalloc(sizeof(struct subpage_prot_table),  in hash__init_new_context()
129 			if (!mm->context.hash_context->spt) {  in hash__init_new_context()
130 				kfree(mm->context.hash_context);  in hash__init_new_context()
137 	index = realloc_context_ids(&mm->context);  in hash__init_new_context()
140 		kfree(mm->context.hash_context->spt);  in hash__init_new_context()
142 		kfree(mm->context.hash_context);  in hash__init_new_context()
146 	pkey_mm_init(mm);  in hash__init_new_context()
157 static inline int hash__init_new_context(struct mm_struct *mm)  in hash__init_new_context()  argument
164 static int radix__init_new_context(struct mm_struct *mm)  in radix__init_new_context()  argument
178 	process_tb[index].prtb0 = cpu_to_be64(rts_field | __pa(mm->pgd) | RADIX_PGD_INDEX_SIZE);  in radix__init_new_context()
189 	mm->context.hash_context = NULL;  in radix__init_new_context()
195 int init_new_context(struct task_struct *tsk, struct mm_struct *mm)  in init_new_context()  argument
200 		index = radix__init_new_context(mm);  in init_new_context()
202 		index = hash__init_new_context(mm);  in init_new_context()
207 	mm->context.id = index;  in init_new_context()
209 	mm->context.pte_frag = NULL;  in init_new_context()
210 	mm->context.pmd_frag = NULL;  in init_new_context()
212 	mm_iommu_init(mm);  in init_new_context()
214 	atomic_set(&mm->context.active_cpus, 0);  in init_new_context()
215 	atomic_set(&mm->context.copros, 0);  in init_new_context()
261 static void destroy_pagetable_cache(struct mm_struct *mm)  in destroy_pagetable_cache()  argument
265 	frag = mm->context.pte_frag;  in destroy_pagetable_cache()
269 	frag = mm->context.pmd_frag;  in destroy_pagetable_cache()
275 void destroy_context(struct mm_struct *mm)  in destroy_context()  argument
278 	WARN_ON_ONCE(!list_empty(&mm->context.iommu_group_mem_list));  in destroy_context()
294 		process_tb[mm->context.id].prtb0 = 0;  in destroy_context()
296 		subpage_prot_free(mm);  in destroy_context()
297 	destroy_contexts(&mm->context);  in destroy_context()
298 	mm->context.id = MMU_NO_CONTEXT;  in destroy_context()
301 void arch_exit_mmap(struct mm_struct *mm)  in arch_exit_mmap()  argument
303 	destroy_pagetable_cache(mm);  in arch_exit_mmap()
320 		process_tb[mm->context.id].prtb0 = 0;  in arch_exit_mmap()