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+<!-- header -->
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+
+ <td id="xen_navSecond"><a href="/products/index.html" >Products</a> | <a href="/products/downloads.html">Downloads</a> | <a href="/products/xenhyp.html" class="navSecondOnpage">Xen Hypervisor</a> |
+ <a href="/products/xen_arm.html">Xen ARM</a> | <a href="/products/cloudxen.html">Xen Cloud Platform</a> | <a href="/products/projectgov.html">Governance</a> | <a href="/community/projects.html" class="xen_last">Solution Search</a> </td>
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+ <!-- begin callout -->
+
+
+<h1>Xen Hypervisor 4.2.1 Download</h1>
+ <p> Welcome to the Xen 4.2.1 download page!
+ <p></p>
+
+ <p>Xen 4.2.1 is a maintenance release in the 4.2 series and contains:</p>
+ <ul>
+ <li>TODO: add items here</li>
+ </ul>
+
+ <p> The Xen 4.2 release contains a number of important new features and updates including:</p>
+
+ <p>The 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 and the <a href="http://wiki.xen.org/wiki">wiki</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>
+ <p>You can find more information in the <a hef="http://wiki.xen.org/wiki/Xen_4.2_Release_Notes">Xen 4.2 release notes</a>,
+ the <a href="http://wiki.xen.org/wiki/Xen_4.2_Feature_List">Xen 4.2 feature list</a> and the
+ Also see the <a href="http://wiki.xen.org/wiki/Xen_Release_Features">Xen 4.x Feature Matrix</a>.</p>
+
+
+</p>
+ <table width="800" border="0" cellpadding="0" cellspacing="0" class="servicestable">
+ <tr class="headerText">
+ <td width="230"> </td>
+ <td width="250">Description</td>
+
+ <td width="100"><div align="center">Download</div></td>
+ </tr>
+
+ <tr class="headerText">
+ <td>Tarball</td>
+ <td> </td>
+ <td> </td>
+ <td> </td>
+
+ </tr>
+ <tr>
+ <td><img src="/images/logos/xen_gen_logo.gif" alt="Xen 4.2" width="81" hspace="5" /> tarball</td>
+ <td>Xen 4.2 (hypervisor and tools) official source distribution</td>
+ <td><a href="http://bits.xensource.com/oss-xen/release/4.2.0/xen-4.2.0.tar.gz">
+ <img src="/images/download/download_http.gif" alt="download" width="95" height="50" border="0" /></a>
+ </td>
+ <td><a href="http://bits.xensource.com/oss-xen/release/4.2.0/xen-4.2.0.tar.gz.sig">signature</a></td>
+ </tr>
+ </table>
+
+ <h2>Xen Hypervisor 4.2 Acknowledgements</h2>
+ <p>Contributions were made to this release by 124 individuals from 43 organizations, not counting contributions
+ to external projects such as the BSDs, Linux or qemu. Many thanks to everyone who contributed to this release, either
+ through code, testing, documentation or in any other way. </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>
+
+</table>
+
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+ </tr>
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projects / people / larsk / xenproject-org-websites.git / commitdiff