目前最新的支持xen的修改版内核是Red Hat5

The last release of RHEL (and by extension CentOS and other derivatives) to include a Xen dom0 kernel was RHEL 5. We are currently working with the community to provide dom0 kernel packages for RHEL 6.

 

原来目前支持Xen的修改版linux内核的，还只有centos5，看来只能装回CentOS 5。