B. Repair-Image Invocation
When AIX instance crashes, an OS termination event is sent from the OS to the hypervisor. Upon receiving this event, the hypervisor saves into the ALDRMemArea the status of the crashed OS instance that may be erased/overwritten by ALDR-AIX while performing its work. This includes the contents of the VRMA,the registers’
states of virtual processor 0 (VP0), and the first 8MB of the Hardware Page Table (HPT) entries. The hypervisor then prepares the LPAR for use by ALDR-AIX by copying the repair image and its data structures from the
ALDR-MemArea into the VRMA area, loading the premanufactured registers’s state into VP0, and clearing the first
8MB the HPT entries for use by ALDR-AIX.