IBM Z9, Planning Manual

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CPU IDs and CPU Addresses
Application packages and software products that are licensed to run under specific
CPU identification (CPU ID) information should be checked because they may need
to be updated.
CPU ID information is system-generated for each logical CP 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 CP in
storage in the following format (Figure 1-4):
Figure 1-5 shows the format of the CPU identification number (bits 8 through 31 of
the CPU ID format).
CPU ID Fields
The CPU identification number, with the version code and the machine type,
permits a unique CPU ID for each logical partition.
v
The version code for the System z9 is always zero and is not affected by the
operating mode.
v The CPU identification number for each logical CP (see Figure 1-5) consists of
a two-digit LP identifier, and digits derived from the serial number of the CPC.
– The logical partition identifier is specified using the Partition identifier field
on the General page in either the reset or image profile used by the LP and
must be unique for each active LP in the configuration.
v
The following machine types (CPC model numbers) are returned as indicated
below:
Machine Type Models
2094 System z9 EC
(S08, S18, S28, S38, S54)
2096 System z9 BC
(R07, S07)
0
Version
Code
Machine Type 8000
CPU Identification
Number
63 7 8 31 32 47 48
Figure 1-4. CPU ID Format
P
n
Logical partition identifier
Digit derived from the serial number
PPnnnn
Legend :
Figure 1-5. CPU Identification Number Format
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PR/SM Planning Guide