Channel path ID information

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Red Hat Enterprise Linux 9.2 LPAR mode z/VM guest KVM guest

All CHPIDs that are known to Linux® are shown alongside the subchannels in the /sys/devices/css0 directory.

The directories that represent the CHPIDs have the form: 
/sys/devices/css0/chp0.<chpid>

where <chpid> is a two digit hexadecimal CHPID.

Example: /sys/devices/css0/chp0.4a