Introduction to the Xen Virtual Machine
The Xen Project is an interesting and promising project that received increasing notice over the past year. The code is complex, especially the virtual memory management, the live migration implementation and the grant tables mechanism. This article is an introductory article, however, and does not deal with these topics. I hope, though, that it has provided a starting point to those who want to learn more and delve into the code.
Note: This article refers to Xen-unstable, xen-3.0-devel, which is the basis for Xen-3.0, which should be released soon. The kernel referred to for dom0/domU is a 2.6.* kernel. Whenever the term class is used, it refers to a Python class.
Rami Rosen is a Computer Science graduate of Technion, the Israel Institute of Technology, located in Haifa. He works as a Linux kernel programmer for a networking start-up, and he can be reached at email@example.com. In his spare time he likes running, solving cryptic puzzles and convincing and helping everyone he knows to move to this wonderful operating system, Linux.