1. A method, comprising: maintaining an association of processing system identifiers with resources, including a first and second resources; receiving a request from a requesting processing system in a host for use of the first resource that provides access to the second resource, wherein the request is generated by processing system software and wherein the request further includes a submitted processing system identifier included in the request by host hardware in the host; determining whether the submitted processing system identifier is one of the processing system identifiers associated with the first and second resources; and providing the requesting processing system access to the first resource that the processing system uses to access the second resource in response to determining that the submitted processing system identifier is one of the processing system identifiers associated with the first and second resources.