1. A computer program product for marking memory of a computing environment, said computer program product comprising: a computer readable storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising: determining, by a processor, based on an address translation request, that an address translation structure is being referenced for address translation, the address translation request comprising an address to be translated; and based on determining that the address translation structure is being referenced for address translation, setting an indicator in one of a page table entry or a page status table entry, the one of the page table entry or the page status table entry being determined based on performing translation of the address, and the indicator indicating active use of the address translation structure.