Date: Thu, 16 Jan 2014 14:35:13 +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: r43550 - head/en_US.ISO8859-1/htdocs/news/status Message-ID: <201401161435.s0GEZD6V036734@svn.freebsd.org>
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Author: pgj Date: Thu Jan 16 14:35:13 2014 New Revision: 43550 URL: http://svnweb.freebsd.org/changeset/doc/43550 Log: - Add 2013Q4 report for the VT-d work Submitted by: kib Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2013-10-2013-12.xml Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2013-10-2013-12.xml ============================================================================== --- head/en_US.ISO8859-1/htdocs/news/status/report-2013-10-2013-12.xml Thu Jan 16 12:31:01 2014 (r43549) +++ head/en_US.ISO8859-1/htdocs/news/status/report-2013-10-2013-12.xml Thu Jan 16 14:35:13 2014 (r43550) @@ -19,7 +19,7 @@ <!-- XXX: Keep updating the number of entries --> <p>Thanks to all the reporters for the excellent work! This report - contains 35 entries and we hope you enjoy reading it.</p> + contains 36 entries and we hope you enjoy reading it.</p> <p>The deadline for submissions covering between January and March 2014 is April 7th, 2014.</p> @@ -1979,4 +1979,47 @@ device vt_vga</pre> </ul> </body> </project> + + <project cat='arch'> + <title>Intel IOMMU (VT-d, DMAR) Support</title> + + <contact> + <person> + <name> + <given>Konstantin</given> + <common>Belousov</common> + </name> + <email>kib@FreeBSD.org</email> + </person> + </contact> + + <links> + <url href="http://svnweb.freebsd.org/changeset/base/257251"/>; + <url href="http://svnweb.freebsd.org/changeset/base/259512"/>; + </links> + + <body> + <p>An Input/Output Memory Management Unit (IOMMU) is a Memory + Management Unit (MMU) that connects a Direct Memory + Access-capable (DMA-capable) I/O bus to the main memory, + therefore I/O virtualization is performed by the chipset. An + example IOMMU is the graphics address remapping table (GART) + used by AGP and PCI Express graphics cards. Intel has published + a specification for IOMMU technology as Virtualization + Technology for Directed I/O, abbreviated VT-d.</p> + + <p>A VT-d driver was committed to <tt>head</tt> and + <tt>stable/10</tt>, so <tt>busdma(9)</tt> is now able to utilize + VT-d. The feature is disabled by default, but it may be enabled + via the <tt>hw.dmar.enable</tt> <tt>loader(8)</tt> tunable + — see the links for more information. The immediate plans + include increasing the support for this kind of hardware by + testing and providing the workarounds for specific issues, and + by adding features of the next generation of Intel IOMMU. + Hopefully, the existing and new consumers of VT-d will start use + the driver soon.</p> + + <p>This project was sponsored by The &os; Foundation.</p> + </body> + </project> </report>
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