CPU IDs and CPU addresses

Check application packages and software products that are licensed to run under specific CPU identification (CPU ID) information, because they might need to be updated.

CPU ID information is system-generated for each logical core in the LP during the LP activation. It consists of a version code for the CPC machine type, a CPU identification number that is unique for each logical partition, a model number for the CPC machine type, and a value of X'8000'.

The Store CPU ID (STIDP) instruction stores the CPU ID for each logical core in storage in the following format (Figure 1):

Figure 2 shows the format of the CPU identification number (bits 8 through 31 of the CPU ID format).