Setting up the CP special message device driver

Ubuntu 22.04 LTS z/VM guest

Configure the CP special message device driver when you load the device driver module.

The z/VM user ID does not require special authorizations to receive CP special messages. CP special messages can be issued from the local z/VM guest virtual machine or from other guest virtual machines. You can issue special messages from Linux® or from a CMS or CP session.

Load the device driver module with the modprobe command.

smsgiucv_app syntax

Read syntax diagramSkip visual syntax diagram modprobe smsgiucv_app sender= <user_ID>

Where:

sender = <user_ID>
permits CP special messages from the specified z/VM user ID only. CP special messages are discarded if the specified sender does not match the sender of the CP special message. If the sender option is empty or not set, CP special messages are accepted from any z/VM user ID.

Lowercase characters are converted to uppercase.

To receive messages from several user IDs leave the sender= parameter empty, or do not specify it, and then filter with udev rules.