DETACH CPU

Authorization

Privilege Class: G

Use DETACH CPU to remove processors from your virtual machine configuration.

ALL: specifies all virtual processors currently defined.
cpuaddr: is the processor address of the processor that you want to detach from your virtual machine configuration.
cpuaddr cpuaddr: is a list of addresses and/or ranges delimited by spaces.
cpuaddr1-cpuaddr2: specifies a nonwrapping pair of addresses separated by a hyphen (-) and not separated by any blanks.

You can detach any virtual processor from your virtual machine configuration except the base processor. You cannot detach the base processor from your virtual machine system.
Whenever you detach a virtual processor, your virtual machine is reset as if a CP SYSTEM CLEAR command had been processed. The effects of this system-reset-clear function are described in detail in the description for the SYSTEM CLEAR command. The system-reset-clear function sets all of your virtual machine's storage to binary zeros. Therefore, you must repeat your IPL procedure to proceed.
SET IMSG OFF suppresses informational messages for this command.
For more information, see Usage Notes.

CPU nn DETACHED

indicates that the command has been successfully processed.

This response is followed by:

STORAGE CLEARED - SYSTEM RESET

indicating that all of your virtual machine's storage has been cleared to binary zeros, and your processors and I/O configuration have been reset.