128 				unsigned long *region_index, unsigned int *bit)  in switch_get_position()  argument
131 		*region_index = region_nr >> sctx->region_entries_per_slot_bits;  in switch_get_position()
134 		*region_index = region_nr / sctx->region_entries_per_slot;  in switch_get_position()
143 	unsigned long region_index;  in switch_region_table_read()  local
146 	switch_get_position(sctx, region_nr, &region_index, &bit);  in switch_region_table_read()
148 	return (READ_ONCE(sctx->region_table[region_index]) >> bit) &  in switch_region_table_read()
178 	unsigned long region_index;  in switch_region_table_write()  local
182 	switch_get_position(sctx, region_nr, &region_index, &bit);  in switch_region_table_write()
184 	pte = sctx->region_table[region_index];  in switch_region_table_write()
187 	sctx->region_table[region_index] = pte;  in switch_region_table_write()
378 	unsigned long region_index = 0;  in process_set_region_mappings()  local
408 			if (unlikely(!cycle_length) || unlikely(cycle_length - 1 > region_index)) {  in process_set_region_mappings()
410 				       cycle_length - 1, region_index);  in process_set_region_mappings()
413 			if (unlikely(region_index + num_write < region_index) ||  in process_set_region_mappings()
414 			    unlikely(region_index + num_write >= sctx->nr_regions)) {  in process_set_region_mappings()
416 				       region_index, num_write, sctx->nr_regions);  in process_set_region_mappings()
421 				region_index++;  in process_set_region_mappings()
422 				path_nr = switch_region_table_read(sctx, region_index - cycle_length);  in process_set_region_mappings()
423 				switch_region_table_write(sctx, region_index, path_nr);  in process_set_region_mappings()
430 			region_index++;  in process_set_region_mappings()
432 			region_index = parse_hex(&string);  in process_set_region_mappings()
450 		if (unlikely(region_index >= sctx->nr_regions)) {  in process_set_region_mappings()
451 			DMWARN("invalid set_region_mappings region number: %lu >= %lu", region_index, sctx->nr_regions);  in process_set_region_mappings()
459 		switch_region_table_write(sctx, region_index, path_nr);  in process_set_region_mappings()