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#############################
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__ __ _ ___
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\ \/ /___ _ __ / | / _ \
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\ // _ \ '_ \ | || | | |
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/ \ __/ | | | | || |_| |
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/_/\_\___|_| |_| |_(_)___/
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__ __ _ ____
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\ \/ /___ _ __ / | |___ \
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\ // _ \ '_ \ | | __) |
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/ \ __/ | | | | |_ / __/
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/_/\_\___|_| |_| |_(_)_____|
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#############################
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University of Cambridge Computer Laboratory
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31 Aug 2003
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30 Jan 2004
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http://www.cl.cam.ac.uk/netos/xen
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About the Xen Virtual Machine Monitor
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=====================================
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"Xen" is a Virtual Machine Monitor (VMM) developed by the Systems
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Research Group of the University of Cambridge Computer Laboratory, as
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part of the UK-EPSRC funded XenoServers project.
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"Xen" is a Virtual Machine Monitor (VMM) originally developed by the
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Systems Research Group of the University of Cambridge Computer
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Laboratory, as part of the UK-EPSRC funded XenoServers project.
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The XenoServers project aims to provide a "public infrastructure for
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global distributed computing", and Xen plays a key part in that,
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@@ -54,7 +54,7 @@ tricky to handle. A good description of Xen's design, implementation
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and performance is contained in our October 2003 SOSP paper, available
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at http://www.cl.cam.ac.uk/netos/papers/2003-xensosp.pdf
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We have been working on porting 3 different operating systems to run
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We have worked on porting 3 different operating systems to run
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on Xen: Linux 2.4, Windows XP, and NetBSD.
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The Linux 2.4 port (currently Linux 2.4.22) works very well -- we
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@@ -65,10 +65,10 @@ tried. We refer to our version of Linux ported to run on Xen as
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virtual CPU architecture that we call xeno-x86 (abbreviated to just
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"xeno").
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Unfortunately, the NetBSD port has stalled due to lack of man
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power. We believe most of the hard stuff has already been done, and
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are hoping to get the ball rolling again soon. In hindsight, a FreeBSD
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4 port might have been more useful to the community. Any volunteers? :-)
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NetBSD has been ported to Xen by Christian Limpach, and will hopefully
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soon become part of the standard release. Work on a FreeBSD port has
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been started by Kip Macy, and we hope to see this complete for the 1.3
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release.
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The Windows XP port is nearly finished. It's running user space
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applications and is generally in pretty good shape thanks to some hard
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@@ -134,26 +134,32 @@ recommended since they require extra packet copies.
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Building Xen and XenoLinux
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==========================
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The public master BK repository for the 1.0 release lives at:
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bk://xen.bkbits.net/xeno-1.0.bk
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The public master BK repository for the 1.2 release lives at:
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bk://xen.bkbits.net/xeno-1.2.bk
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To fetch a local copy, install the BitKeeper tools, then run:
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'bk clone bk://xen.bkbits.net/xeno-1.0.bk'
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'bk clone bk://xen.bkbits.net/xeno-1.2.bk'
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To see how to build Xen, Xenolinux, and all the control tools, inspect
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the tools/misc/xen-clone script in the BK repository. This script can
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be used to clone the repostitory and perform a full build.
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the tools/misc/xen-clone script in the BK repository (also available
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via http://www.cl.cam.ac.uk/netos/xen/readmes/xen-clone). This script
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can be used to clone the repository and perform a full build.
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The build procedure for xenolinux is slightly complicated as its done
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by running the 'mkbuildtree' script over a pristine Linux tree to turn
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it into a xenolinux tree by adding the 'xeno' architecture.
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There's also a pre-built source tree on the project downloads page.
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There's also a recent pre-built source tree on the project downloads
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page: http://www.cl.cam.ac.uk/netos/xen/downloads/xeno-1.2.tar.gz
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Using the domain control tools
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==============================
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See example Python scripts in tools/examples/
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README.CD contains some example invocations.
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See example Python scripts in tools/examples/ and the associated README.
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Further documentation is in docs/ (e.g., docs/Xeno-HOWTO), and also in
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Further documentation is in docs/ (e.g., docs/Xeno-HOWTO).
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