Kernel parameters

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6.18 z/VM guest

If the CP special message device driver has been compiled into the kernel, you configure the device driver by adding the smsgiucv_app.sender= parameter to the kernel parameter line.

Figure 1. smsgiucv_app kernel parameter syntax

1 ? smsgiucv_app.sender=<user_ID>
where:
smsgiucv_app.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 smsgiucv_app.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 smsgiucv_app.sender= parameter empty, or do not specify it, and then filter with udev rules.