A data processing system includes a global promotion facility and a plurality of processing units coupled by an interconnect. At least one processing unit among the plurality of processing units includes one or more second caches having cache arrays in which instructions and operand data are cached, an instruction sequencing unit, an execution unit that executes an acquisition instruction to acquire a promotion bit field within the global promotion facility exclusive of at least one other processing unit, and a promotion cache separate from the one or more second caches. In response to acquisition of the promotion bit field by the first processor, the promotion cache of the first processor stores the promotion bit field separately from instructions and operand data.