Xen, supporting a cooperative method of virtualization, requires no modification, because the guest is aware that it's being virtualized and is modified.

Xen可以支持一种协作的虚拟化方法，它不需要任何修改，因为客户机知道自己正在进行虚拟化，并已经进行了修改。

youdao

OpenVZ is a virtualization-aware (modified) kernel that supports isolated user-spaces, VPS, with a set of user-tools for management. For example, you can easily create a new VPS from the command line.

OpenVZ是一个支持虚拟化的内核(修改过的)，可以支持用户空间隔离、VPS和一组用户管理工具。

youdao