Specifying kernel parameters

Ubuntu 22.04 LTS LPAR mode z/VM guest KVM guest

There are different methods for passing kernel parameters to Linux®.

  • Including kernel parameters in a boot configuration
  • Using a kernel parameter file
  • Specifying kernel parameters when booting Linux

Kernel parameters that you specify when booting Linux are not persistent. To define a permanent set of kernel parameters for a Linux instance, include these parameters in the boot configuration.

Note: Ubuntu Server, zipl, or the installer; especially autoinstall, might set required kernel parameters for you. Parameters that you specify might interfere with these settings. Read /proc/cmdline to find out which parameters were used to start a running Linux instance.