Xen guest support

configname: CONFIG_XEN

Linux Kernel Configuration
└─>Processor type and features
└─>Linux guest support
└─>Xen guest support
In linux kernel since version 2.6.23 (release Date: 2007-10-09)  
This is the Linux Xen port. Enabling this will allow the
kernel to boot in a paravirtualized environment under the
Xen hypervisor.