https://ibm-z-hardware-and-operating-systems.ideas.ibm.com/ideas/ZVM-I-421
Allow DIRMAINT to | IBM Z Hardware and Operating Systems Ideas Portal
ibm zoperating systemsallow
https://www.ibm.com/support/pages/apar/vm66424
VM66424: DirMaint support for Guest Secure IPL
Provide DirMaint support to allow guest secure IPL (load and dump) for both ECKD and SCSI devices.
support forguestsecureipl