This is xnu-12377.1.9. See this file in:
/*
 * @OSF_COPYRIGHT@
 */
/*
 *	Error string definitions for the virtual memory kernel subsystem
 */

static const char * const err_codes_vm_kern[] = {
	/* 0 */	"(vm/kernel) no error",
	/* 1 */	"(vm/kernel) error return now",
};

static const char * const err_codes_vm_reclaim[] = {
	/* 0 */	"(vm/reclaim) no error",
	/* 1 */	"(vm/reclaim) invalid argument",
	/* 2 */	"(vm/reclaim) operation not supported",
	/* 3 */	"(vm/reclaim) invalid region size",
	/* 4 */	"(vm/reclaim) invalid ring capacity",
	/* 5 */	"(vm/reclaim) invalid reclaim ID",
	/* 6 */	"(vm/reclaim) ring already instantiated",
	/* 7 */	"(vm/reclaim) invalid ring",
};

/*	err_vm subsystems      	*/
static const struct error_subsystem err_vm_sub[] = {
	/* vm/0; */
	{
		"(vm/kernel)",
		errlib_count(err_codes_vm_kern),
		err_codes_mach_send,
	},
	/* vm/1; */
	{
		"(vm/reclaim)",
		errlib_count(err_codes_vm_reclaim),
		err_codes_vm_reclaim,

	},
};