Date: Tue, 29 Dec 2015 07:01:44 +0000 (UTC) From: Benjamin Kaduk <bjk@FreeBSD.org> To: doc-committers@freebsd.org, svn-doc-all@freebsd.org, svn-doc-head@freebsd.org Subject: svn commit: r47922 - head/en_US.ISO8859-1/htdocs/news/status Message-ID: <201512290701.tBT71iVi020524@repo.freebsd.org>
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Author: bjk Date: Tue Dec 29 07:01:44 2015 New Revision: 47922 URL: https://svnweb.freebsd.org/changeset/doc/47922 Log: Add report on NTB driver improvements from cem Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2015-10-2015-12.xml Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2015-10-2015-12.xml ============================================================================== --- head/en_US.ISO8859-1/htdocs/news/status/report-2015-10-2015-12.xml Tue Dec 29 06:56:13 2015 (r47921) +++ head/en_US.ISO8859-1/htdocs/news/status/report-2015-10-2015-12.xml Tue Dec 29 07:01:44 2015 (r47922) @@ -253,4 +253,52 @@ </task> </help> </project> + + <project cat='kern'> + <title>ntb_hw(4)/if_ntb(4) driver synced up to Linux</title> + + <contact> + <person> + <name> + <given>Conrad</given> + <common>Meyer</common> + </name> + <email>cem@FreeBSD.org</email> + </person> + </contact> + + <links> + <url href="https://github.com/jonmason/ntb/wiki">Jon Mason's NTB wiki</url> + <url href="https://www-ssl.intel.com/content/dam/www/public/us/en/documents/white-papers/xeon-c5500-c3500-non-transparent-bridge-paper.pdf">Intel NTB whitepaper</url> + </links> + + <body> + <p>ntb_hw(4) is now up-to-date with the Linux NTB driver as + of the work-in-progress 4.4 kernel (and actually, contains some + fixes that haven't landed in the mainline Linux tree yet but will + land in 4.5). Only Back-to-back ("B2B") configurations + are supported at this time. Going forward, newer hardware may + only support the B2B configuration.</p> + + <p>if_ntb(4) is mostly up-to-date with the Linux NTB netdevice + driver. Notably absent is support for changing the MTU at + runtime.</p> + </body> + + <sponsor>EMC / Isilon Storage Division</sponsor> + + <help> + <task> + <p>Improving if_ntb(4) to avoid using the entire Base + Address Register (BAR) when very large BAR sizes are configured + (e.g., 512 GB).</p> + </task> + + <task> + <p>Improving pmap_mapdev(9) to somehow allocate only + superpage mappings for large BARs, on platforms that support + superpages. (NTB BARs can be as large as 512 GB.)</p> + </task> + </help> + </project> </report>
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