From: Felipe Alfaro Solana <felipe_alfaro linuxmail org>
To: Development discussions related to Fedora Core <fedora-devel-list redhat com>
Subject: Re: Fedora Core 4
Date: Sat, 15 Jan 2005 15:32:58 +0100
On 15 Jan 2005, at 02:20, Kyrre Ness Sjobak wrote:
- Xen and Virtualization
This starts by integrating the Xen kernel stuff, and going
from there.
Hmm.. Xen is quite similar to VMWare, or am i totaly wrong?
Xen is very different from VMware. VMware emulates a fake PC and is
able to run nearly any Operating System and suboperating systems (like
Windows). However, Xen does perform paravirtualization instead of
emulating a whole PC. Paravirtualization requires changes into the
guest operating system source code, in order to replace hardware
dependent code with calls to Xen itself (the Xen hypervisor). This
allows high performance virtualization. VMware-like emulation is a lot
trickier.
Since Xen requires the guest operating system source code to be
modified, Windows is not (and probably will never, in a foreseeable
future) supported. Up to date, only Linux and NetBSD are supported,
although people are working towards porting FreeBSD to Xen.