Date: Wed, 10 Jul 2013 21:37:57 +0000 (UTC) From: Gabor Pali <pgj@FreeBSD.org> To: doc-committers@freebsd.org, svn-doc-all@freebsd.org, svn-doc-head@freebsd.org Subject: svn commit: r42238 - head/en_US.ISO8859-1/htdocs/news/status Message-ID: <201307102137.r6ALbvZW094313@svn.freebsd.org>
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Author: pgj Date: Wed Jul 10 21:37:57 2013 New Revision: 42238 URL: http://svnweb.freebsd.org/changeset/doc/42238 Log: - Elaborate benefits of PVHM and PVH in the Xen entry Submitted by: theraven Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2013-04-2013-06.xml Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2013-04-2013-06.xml ============================================================================== --- head/en_US.ISO8859-1/htdocs/news/status/report-2013-04-2013-06.xml Wed Jul 10 11:57:13 2013 (r42237) +++ head/en_US.ISO8859-1/htdocs/news/status/report-2013-04-2013-06.xml Wed Jul 10 21:37:57 2013 (r42238) @@ -1512,6 +1512,22 @@ functionality through <tt>pkg(8)</tt>.</ will also set the ground for a future PVH port (when PVH support is merged into Xen).</p> + <p>PVHVM allows a virtual machine that boots as a native guest to + be able to take full advantage of paravirtualized drivers, + giving a performance improvement in most I/O related tasks. PVH + allows a guest to take advantage of hardware assistance for + memory management, but uses fully paravirtualized events and + boot procedure, which brings two significant advantages beyond + performance. The first is that domain 0 does not have to run a + QEMU instance for emulated boot for PVH guests, which is a + common reason for hosting providers to charge more for Windows + and other HVM guests. The second is that PVH domains can be + used as domain 0, without requiring different pmap (memory + management) code from the conventional kernel. This will allow + us to ship a single kernel binary supporting bare metal + hardware, running as a Xen unprivileged guest, and eventually as + Xen domain 0.</p> + <p>Further improvements on blkfront and netfront have also been commited:</p>
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