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<h1>XenSummit 2012 Agenda and Speaker Line-up</i></h1>
<p><b>Cambridge, UK 8/9/2012</b> - <a href="http://xen.org/">Xen.org</a>, home of the open source Xen hypervisor,
- today announced the final speaker line-up and agenda for its annual XenSummit North
- America conference. The event will be held, August 27-28 in San Diego, California and
- is co-located with <a href="http://events.linuxfoundation.org/events/cloudopen/">CloudOpen</a>
- and <a href="http://events.linuxfoundation.org/events/linuxcon/">LinuxCon North America</a>.</p>
-
- <p>XenSummit attracts prominent Xen community members and thought leaders
- from around the world to hear updates on future plans, research and new
- developments for technologies based on the <a
- href="http://xen.org/products/xenhyp.html">Xen
- Hypervisor</a>, as well as discuss the current state of projects applying
- Xen technology to areas like cloud computing, mobility and security. A key
- platform for some of the world’s largest and most successful public
- clouds, the Xen hypervisor is the collective effort of a global
- development community representing more than 50 leading technology
- vendors, universities, and virtualization experts. This year’s agenda
- brings together some of the best minds in open source to discuss what’s in
- store for Xen and how it will continue to set the pace in cloud, mobility
- and virtualization infrastructure.</p>
-
- <h3>Agenda Highlights</h3>
- <p>XenSummit features speakers from AMD, ARM, Broadcom, Bromium, the BSD
- Community, Cambridge University, Canonical, Calxeda, Citrix, The Flux
- Research Group, Galois, Huawei, Inktank, Intel, Locaweb, OnApp, Oracle,
- Rackspace Hosting and the University of Applied Sciences (HES) in
- Vaud.</p>
-
- <span style="text-decoration: underline;">Xen Project Updates</span>
- <ul>
- <li><a href="http://xen.org/xensummit/xs12na_talks/M2.html" target="_blank">Xen 4.3 roadmap</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/M3.html" target="_blank">The sexy world of Linux kernel pvops project</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/M4.html" target="_blank">Xen Cloud Platform Update</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/M5.html" target="_blank">(Free and Net)BSD on Xen Roadmap</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/M9.html" target="_blank">Hybrid: Future of PV</a></li>
- </ul>
- <span style="text-decoration: underline;">Cloud Computing and Xen case-studies</span>
- <ul>
- <li><a href="http://xen.org/xensummit/xs12na_talks/M7b.html" target="_blank">Xen and CloudStack</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/M8b.html" target="_blank">OpenStack, Xen and XCP</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/T1.html" target="_blank">Scaling Xen within Rackspace Cloud Servers</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/T5b.html" target="_blank">SDN - OpenFlow + OpenVSwitch + Quantum (OpenStack)</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/T6b.html" target="_blank">Xen*, SDN, and Apache CloudStack</a></li>
- </ul>
- <span style="text-decoration: underline;">Performance</span>
- <ul>
- <li><a href="http://xen.org/xensummit/xs12na_talks/T9.html" target="_blank">NUMA and Virtualization, the case of Xen</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/M8.html" target="_blank">Xen PV Performance Status and Optimization Opportunities</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/T7.html" target="_blank">VM Live Migration Speedup in Xen</a></li>
- </ul>
- <span style="text-decoration: underline;">Security</span>
- <ul>
- <li><a href="http://xen.org/xensummit/xs12na_talks/M10.html" target="_blank">Enlightened Security in Portable Service VMs</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/M11b.html" target="_blank">Linux Stubdomain</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/T2.html" target="_blank">Windsor: Domain 0 Disaggregation for XenServer</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/T6.html" target="_blank">µ-Xen</a></li>
- </ul>
- <span style="text-decoration: underline;">Storage</span>
- <ul>
- <li><a href="http://xen.org/xensummit/xs12na_talks/T9b.html" target="_blank">Block Storage For VMs With Ceph</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/T7b.html" target="_blank">Building a Distributed Block Storage System on Xen</a></li>
- </ul>
- <span style="text-decoration: underline;">Xen on ARM based Servers</span>
- <ul>
- <li><a href="http://xen.org/xensummit/xs12na_talks/M4b.html" target="_blank">Panel: Virtualization on ARM Processors</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/T3.html" target="_blank">Xen on ARM Cortex A15</a></li>
- </ul>
- <span style="text-decoration: underline;">Xen in embedded and mobile devices</span>
- <ul>
- <li><a href="http://xen.org/xensummit/xs12na_talks/T10b.html" target="_blank">Dealing with Hardware Heterogeneity Using EmbeddedXEN, a Virtualization Framework Tailored to ARM Based Embedded Systems</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/T4.html" target="_blank">Porting Xen Paravirtualization to MIPS Architecture</a></li>
- </ul>
- <span style="text-decoration: underline;">Xen and language run-times</span>
- <ul>
- <li><a href="http://xen.org/xensummit/xs12na_talks/M10b.html" target="_blank">Mirage: extreme specialisation of virtual appliances</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/M9b.html" target="_blank">The HaLVM: A Simple Platform for Simple Platforms</a></li>
- </ul>
- <span style="text-decoration: underline;">Topics for Developers</span>
- <ul>
- <li><a href="http://xen.org/xensummit/xs12na_talks/M6.html" target="_blank">Engaging the Xen Community</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/T8b.html" target="_blank">Evaluation of X32 ABI for Virtualization and Cloud</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/M7.html" target="_blank">From printk to QEMU: Xen/Linux Kernel debugging</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/T5.html" target="_blank">Improving Xen idle power efficiency</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/T10.html" target="_blank">Intel Update</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/M6b.html" target="_blank">Introduction of AMD Virtual Interrupt Controller</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/M11.html" target="_blank">Nested Virtualization Update from Intel</a></li>
- </ul>
- <span style="text-decoration: underline;">Research</span>
- <ul>
- <li><a href="http://xen.org/xensummit/xs12na_talks/T3b.html" target="_blank">COLO: COarse-grain LOck-stepping Virtual Machines for Non-stop Service</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/T8.html" target="_blank">XenTT: Deterministic Systems Analysis in Xen</a></li>
- </ul>
+ today announced the availability of Xen 4.2, the most advanced open source hypervisor software available. The
+ release is the collective effort of a global development team representing many leading technology vendors,
+ universities, and virtualization experts. This release is the culmination of 18 months of work, 2900 commits
+ and almost 300K lines of code of development effort, by 124 individuals from 43 organizations.</p>
+
+ <p>The Xen 4.2 release incorporates many new features and improvements to existing features. There are improvements
+ across the board including to Security, Scalability, Performance and Documentation.<ul>
+
+ <li><strong>XL is now the default toolstack</strong>: Significant effort has gone in to the XL
+ tool toolstack in this release and it is now feature complete and robust enough that we have made
+ it the default. This toolstack can now replace xend in the majority of deployments,
+ see <a href="http://wiki.xen.org/wiki/XL_vs_Xend_Feature_Comparison">XL vs Xend Feature Comparison</a>.
+ As well as improving XL the underlying libxl library has been significantly improved and supports
+ the majority of the most common toolstack features. In addition the API has been declared stable
+ which should make it even easier for external toolstack such as <a hfref="http://libvirt.org/">libvirt</a>
+ and <a href="http://www.xen.org/products/cloudxen.html">XCP's</a> xapi to make full use of this functionality
+ in the future.</li>
+
+ <li><strong>Large Systems</strong>: Following on from the improvements made in 4.1 Xen now supports even
+ larger systems, with up to 4095 host CPUs and up to 512 guest CPUs. In addition toolstack feature like the
+ ability to automatically create a CPUPOOL per NUMA node and more intelligent placement of guest VCPUs on
+ NUMA nodes have further improved the Xen experience on large systems. Other new features, such as multiple
+ PCI segment support have also made a positive impact on such systems.</li>
+
+ <li><strong>Improved security</strong>: The XSM/Flask subsystem has seen several enhancements, including
+ improved support for disaggregated systems and a rewritten example policy which is clearer and simpler to
+ modify to suit local requirements.</li>
+
+ <li><strong>Documentation</strong>: The Xen documentation has been much improved, both the
+ <a href="http://xenbits.xen.org/docs/4.2-testing/">in-tree documentation</a> and the
+ <a href="http://wiki.xen.org/wiki/Category:Xen_4.2">Xen 4.2 Wiki Documentations</a>.
+ This is in no small part down to the success of the <a href="http://wiki.xen.org/wiki/Xen_Document_Days">Xen Document Days</a> so
+ thanks to all who have taken part.</li>
+
+ </ul></p>
+
+ <h3>Related Projects</h3>
+ <p>The Xen project continues to work closely with its upstream projects. Of particular note in the Xen 4.2 release cycle is the
+ upstreaming of the HVM device model support into <a href="http://qemo.org">qemu</a>. After the Linux dom0 support
+ (merged upstream in <a href="http://blog.xen.org/index.php/2011/06/02/xen-celebrates-full-dom0-and-domu-support-in-linux-3-0/">Linux 3.0</a>)
+ the qemu-derived device model was the largest remaining piece of code which required upstreaming. Support for Xen was merged into
+ upstream prior to the qemu 0.15 release and is supported as an option using the XL toolstack. It will become the default in 4.3.
+ Alongside this support we have also gained support for <a href="http://www.seabios.org">SeaBIOS</a> and
+ <a href="http://sourceforge.net/apps/mediawiki/tianocore">Tianocore</a>/OVMF (a UEFI BIOS).</p>
+
+ <h3>Acknowledgements</h3>
+ <p>Contributions to Xen 4.2 made to this release by 124 individuals from 43 organizations, not counting contributions
+ to external projects such as the BSDs, Linux or qemu. </p>
+
+ <pp>The diagram below shows organisations which contributed more than 1% in lines of code to the Xen 4.2 release.
+ Several items in the diagram discribe groups of people or organisations: <em>Individual</em> covers contributions
+ by individuals whose affiliation is unknown, <em>Misc</em> covers contributions by commercial organisations which
+ did not go above 1% individually and <em>University</em> covers contributions by Universities which did not go above
+ 1% individually.</p>
+ <img src="/images/xen/Xen_4_2_Contribution_Stats.png">
+
+ <p>For a complete breakdown of community contributions, see <a href="http://wiki.xen.org/wiki/Xen_4.2_Acknowledgments">Xen 4.2 Acknowledgements</a>.</p>
+
<h3>Further Information:</h3>
<ul>
- <li><a href="http://xen.org/products/index.html" target="_blank">List projects owned by Xen.org</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/xensummit.html">XenSummit 2012 Event Page</a></li>
- <li><a href="http://xen.org/xensummit/xs12na_talks/agenda.html">XenSummit Agenda</a></li>
- <li><a href="http://www.regonline.com/Register/Checkin.aspx?EventId=1105690">XenSummit Registration</a></li>
+ <li><a href="/download/index_4.2.0.html">Xen 4.2 Download</a></li>
+ <li><a href="http://wiki.xen.org/wiki/Xen_4.2_Release_Notes">Xen 4.2 Release Notes</a></li>
+ <li><a href="http://wiki.xen.org/wiki/Xen_4.2_Feature_List">Xen 4.2 Feature List</a></li>
+ <li><a href="http://wiki.xen.org/wiki/Xen_4.2_Man_Pages">Xen 4.2 Manual Pages</a></li>
+ <li><a href="http://wiki.xen.org/wiki/Category:Xen_4.2">Xen 4.2 Documentations</a></li>
+ <li><a href="http://wiki.xen.org/wiki/Xen_Release_Features">Xen 4.x Feature Matrix</a></li>
+ <li><a href="http://wiki.xen.org/wiki/Xen_4.x_Manuals">Xen 4.x Manuals</a></li>
+ <li><a href="http://blog.xen.org/" target="_blank">Xen Community Blog</a></li>
+ <li><a href="http://wiki.xen.org">Xen Wiki and Documentation</a></li>
+ <li>twitter: <a href="https://twitter.com/xen_com_mgr">@xen_com_mgr</a>, #xen</li>
</ul>
<h3>About Xen.org</h3>