Loading required modules and components

The Linux™ kernel must include support for the protected AES cipher (paes_s390) which automatically includes the pkey module.

For newer kernels, the monolithic pkey module is split into multiple sub modules. The individual pkey sub modules are normally automatically loaded as needed. Not all of them are required for all environments or use cases.

Normally, the paes_s390 module is automatically loaded, if required. In this case, the pkey module and sub modules are also automatically loaded.

If errors occur nevertheless, first check whether the required module is already loaded:

# grep <module_name> /proc/modules

For kernels before the split, you see only one pkey mode in the output.

If required, you can load the paes_s390 module or the pkey module with the modprobe command. There are no module parameters.

# modprobe <module_name>

For more information, refer to Loading the device driver modules.