svn commit: r46186 - head/en_US.ISO8859-1/htdocs/news/status
Benjamin Kaduk <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.cvs.doc |
|---|---|
| Message-ID | <[email protected]> |
Author: bjk
Date: Sat Jan 10 02:29:44 2015
New Revision: 46186
URL: https://svnweb.freebsd.org/changeset/doc/46186
Log:
Add PCI SR-IOV report
Approved by: hrs (mentor, blanket)
Modified:
head/en_US.ISO8859-1/htdocs/news/status/report-2014-10-2014-12.xml
Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2014-10-2014-12.xml
==============================================================================
--- head/en_US.ISO8859-1/htdocs/news/status/report-2014-10-2014-12.xml Sat Jan 10 01:18:47 2015 (r46185)
+++ head/en_US.ISO8859-1/htdocs/news/status/report-2014-10-2014-12.xml Sat Jan 10 02:29:44 2015 (r46186)
@@ -2051,4 +2051,53 @@
</help>
</project>
+ <project cat='kern'>
+ <title>PCI SR-IOV Infrastructure</title>
+
+ <contact>
+ <person>
+ <name>
+ <given>Ryan</given>
+ <common>Stone</common>
+ </name>
+ <email>[email protected]</email>
+ </person>
+ </contact>
+
+ <links>
+ <url href="https://github.com/rysto32/freebsd/commits/iov_ixl" />
+ </links>
+
+ <body>
+ <p>PCI Single Root I/O Virtualization (SR-IOV) is an optional part
+ of the PCIe standard that provides hardware acceleration for the
+ virtualization of PCIe devices. When SR-IOV is in use, a function in a
+ PCI device (known as a Physical Function, or PF) will present multiple
+ Virtual PCI Functions (VF) on the PCI bus. These VFs are fully
+ independent PCI devices that have access to the resources of the PF.
+ For example, on a network interface card, VFs could transmit and
+ receive packets independent of the PF.</p>
+
+ <p>The most obvious use case for SR-IOV is virtualization. A
+ hypervisor like bhyve could instantiate a VF for every VM and use PCI
+ passthrough to assign the VFs to the VMs. This would allow multiple
+ VMs to share access to the PCI device without having to do any
+ expensive communication with the hypervisor, greatly increasing
+ performance of performing I/O from a VM.</p>
+
+ <p>Work on the core PCI infrastructure is complete and undergoing
+ review. Currently it is planned to commit the PCI infrastructure to
+ head by the end of January.</p>
+
+ <p>In additional to the PCI infrastructure, individual PCI drivers
+ must be extended to implement SR-IOV. An SR-IOV implementation is in
+ progress for the ixl(4) driver, which supports the Intel XL710 family
+ of 40G and 10G NICs. Currently it is planned to have this in review
+ by the end of January. An implementation for ixgbe(4) is also in
+ progress, but there is no timeline for completion.</p>
+ </body>
+
+ <sponsor>Sandvine Inc.</sponsor>
+ </project>
+
</report>
_______________________________________________
[email protected] mailing list
http://lists.freebsd.org/mailman/listinfo/svn-doc-all
To unsubscribe, send any mail to "[email protected]"