hypervisor 与 paravirtualization

In , a hypervisor (also: virtual machine monitor) is a platform that allows multiple to run on a host computer at the same time. The term usually refers to an implementation using .I、

In computing, paravirtualization is a technique that presents a software interface to that is similar but not identical to that of the underlying hardware. This requires to be explicitly to run on top of the (VMM), which the owner of exclusive rights in a operating system may decline to allow for strategic purposes, but may enable the VMM itself to be simpler and for the virtual machines that run on it to achieve higher performance.

另外请注意Partial virtualization和full virtualization的区别，简单的说,Xen是前者，VMware ESX是后者。