Reference

LPAR mode z/VM guest KVM guest

Use these commands, kernel parameters, and kernel options to configure Linux® on Z. Be aware of the z/VM® DIAG calls required by Ubuntu Server 20.04.1.

Restrictions

For prerequisites and restrictions see the IBM® LinuxONE and IBM Z® architecture-specific information in the Ubuntu Server 20.04.1 release notes at
wiki.ubuntu.com/FocalFossa/ReleaseNotes