109 	if (mm->context.ldt) {  in do_sanity_check()
159 	if (boot_cpu_has(X86_FEATURE_PTI) && !mm->context.ldt)  in map_ldt_struct_to_user()
184 	if (boot_cpu_has(X86_FEATURE_PTI) && !mm->context.ldt)  in map_ldt_struct_to_user()
204 map_ldt_struct(struct mm_struct *mm, struct ldt_struct *ldt, int slot)  in map_ldt_struct()  argument
218 	WARN_ON(ldt->slot != -1);  in map_ldt_struct()
223 	is_vmalloc = is_vmalloc_addr(ldt->entries);  in map_ldt_struct()
225 	nr_pages = DIV_ROUND_UP(ldt->nr_entries * LDT_ENTRY_SIZE, PAGE_SIZE);  in map_ldt_struct()
229 		const void *src = (char *)ldt->entries + offset;  in map_ldt_struct()
261 	ldt->slot = slot;  in map_ldt_struct()
265 static void unmap_ldt_struct(struct mm_struct *mm, struct ldt_struct *ldt)  in unmap_ldt_struct()  argument
270 	if (!ldt)  in unmap_ldt_struct()
277 	nr_pages = DIV_ROUND_UP(ldt->nr_entries * LDT_ENTRY_SIZE, PAGE_SIZE);  in unmap_ldt_struct()
284 		va = (unsigned long)ldt_slot_va(ldt->slot) + offset;  in unmap_ldt_struct()
290 	va = (unsigned long)ldt_slot_va(ldt->slot);  in unmap_ldt_struct()
297 map_ldt_struct(struct mm_struct *mm, struct ldt_struct *ldt, int slot)  in map_ldt_struct()  argument
302 static void unmap_ldt_struct(struct mm_struct *mm, struct ldt_struct *ldt)  in unmap_ldt_struct()  argument
324 static void finalize_ldt_struct(struct ldt_struct *ldt)  in finalize_ldt_struct()  argument
326 	paravirt_alloc_ldt(ldt->entries, ldt->nr_entries);  in finalize_ldt_struct()
329 static void install_ldt(struct mm_struct *mm, struct ldt_struct *ldt)  in install_ldt()  argument
334 	smp_store_release(&mm->context.ldt, ldt);  in install_ldt()
342 static void free_ldt_struct(struct ldt_struct *ldt)  in free_ldt_struct()  argument
344 	if (likely(!ldt))  in free_ldt_struct()
347 	paravirt_free_ldt(ldt->entries, ldt->nr_entries);  in free_ldt_struct()
348 	if (ldt->nr_entries * LDT_ENTRY_SIZE > PAGE_SIZE)  in free_ldt_struct()
349 		vfree_atomic(ldt->entries);  in free_ldt_struct()
351 		free_page((unsigned long)ldt->entries);  in free_ldt_struct()
352 	kfree(ldt);  in free_ldt_struct()
368 	if (!old_mm->context.ldt)  in ldt_dup_context()
371 	new_ldt = alloc_ldt_struct(old_mm->context.ldt->nr_entries);  in ldt_dup_context()
377 	memcpy(new_ldt->entries, old_mm->context.ldt->entries,  in ldt_dup_context()
387 	mm->context.ldt = new_ldt;  in ldt_dup_context()
401 	free_ldt_struct(mm->context.ldt);  in destroy_context_ldt()
402 	mm->context.ldt = NULL;  in destroy_context_ldt()
418 	if (!mm->context.ldt) {  in read_ldt()
426 	entries_size = mm->context.ldt->nr_entries * LDT_ENTRY_SIZE;  in read_ldt()
430 	if (copy_to_user(ptr, mm->context.ldt->entries, entries_size)) {  in read_ldt()
470 	struct desc_struct ldt;  in write_ldt()  local
493 		memset(&ldt, 0, sizeof(ldt));  in write_ldt()
500 		fill_ldt(&ldt, &ldt_info);  in write_ldt()
502 			ldt.avl = 0;  in write_ldt()
508 	old_ldt       = mm->context.ldt;  in write_ldt()
520 	new_ldt->entries[ldt_info.entry_number] = ldt;  in write_ldt()