Date: Thu, 4 Jul 2013 21:03:14 +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: r42149 - head/en_US.ISO8859-1/htdocs/news/status Message-ID: <201307042103.r64L3EB9043647@svn.freebsd.org>
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Author: pgj Date: Thu Jul 4 21:03:14 2013 New Revision: 42149 URL: http://svnweb.freebsd.org/changeset/doc/42149 Log: - Add a Q2 entry on FreeBSD/arm superpages support Submitted by: Zbyszek Bodek <zbb@semihalf.com> 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 Thu Jul 4 20:39:32 2013 (r42148) +++ head/en_US.ISO8859-1/htdocs/news/status/report-2013-04-2013-06.xml Thu Jul 4 21:03:14 2013 (r42149) @@ -18,7 +18,7 @@ <!-- XXX: keep updating the number of entries --> <p>Thanks to all the reporters for the excellent work! This report - contains 12 entries and we hope you enjoy reading it.</p> + contains 13 entries and we hope you enjoy reading it.</p> <!-- XXX: set date for the next set of submissions --> <p>The deadline for submissions covering between July and September 2013 @@ -615,4 +615,87 @@ Pawel Jakub Dawidek.</p> </body> </project> + + <project cat='arch'> + <title>Superpages for ARMv7</title> + + <contact> + <person> + <name> + <given>Zbigniew</given> + <common>Bodek</common> + </name> + <email>zbb@semihalf.com</email> + </person> + + <person> + <name> + <given>Grzegorz</given> + <common>Bernacki</common> + </name> + <email>gjb@semihalf.com</email> + </person> + + <person> + <name> + <given>Rafal</given> + <common>Jaworowski</common> + </name> + <email>raj@semihalf.com</email> + </person> + </contact> + + <links> + <url href="http://static.usenix.org/events/osdi02/tech/full_papers/navarro/navarro.pdf"/>; + <url href="https://wiki.freebsd.org/ARMSuperpages"/>; + <url href="https://github.com/semihalf-bodek-zbigniew/freebsd-arm-superpages.git"/>; + </links> + + <body> + <p>The ARM architecture is more and more prevalent, not only in + the mobile and embedded space. Among the more interesting + industry trends emerging in the recent months, there has been + the concept of "ARM server". Some top-tier companies, e.g. + Dell and HP, have already started to develop such systems.</p> + + <p>Key to success of &os; in these new areas is dealing with the + sophisticated features of the platform, for example adding + support for superpages.</p> + + <p>The objective of this project is to enable &os;/arm to utilize + superpages which would allow efficient use of TLB translations + (by enlarging TLB coverage), leading to improved performance in + many applications and scalability. This is intended to work on + ARMv7-based processors, however compatibility with ARMv6 will be + preserved.</p> + + <p>The following steps have been made since the last status + report:</p> + + <ul> + <li>Implement <tt>pmap_copy()</tt> to support <tt>fork()</tt> + system calls.</li> + <li>Support for multiple page sizes.</li> + <li>Implement superpage creation, promotion, demotion, and + eviction mechanisms.</li> + <li>Implement PV entry management for superpages.</li> + <li>Partially integrate code to the <tt>head</tt> branch.</li> + </ul> + + <p>Next steps:</p> + + <ul> + <li>Test and benchmark.</li> + <li>Complete integration into &os; <tt>head</tt>.</li> + </ul> + + <p>This project is jointly sponsored by The &os; Foundation and + Semihalf sp.j.</p> + </body> + + <help> + <task>Start utilizing superpages on ARMv6/v7.</task> + <task>Find bugs and debug.</task> + </help> + </project> </report>
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