Monday, August 01, 2011

Fwd: [svlug-announce] SVLUG Aug. 3nd meeting: Xen Support in the Linux Kernel: Upstreaming Efforts and New Developments

Update: Notes from SVLUG Meeting Stefano Stabellini Developer

---------- Forwarded message ----------
From: Rick
Date: Mon, Aug 1, 2011 at 4:19 PM
Subject: [svlug-announce] SVLUG Aug. 3rd meeting: Xen Support in the Linux Kernel: Upstreaming Efforts and New Developments


  Wednesday, Aug. 3nd, 2011


   Xen Support in the Linux Kernel: Upstreaming Efforts and New

   Stefano Stabellini,
   Senior Software Engineer, Citrix R&D

   Xen ( reuses many externals of open source
   projects, Qemu ( and Linux in particular.  During
   the first years of existence, Xen accumulated a large number of changes
   to these external projects, but then struggled to upstream them.

   In the last couple of years, the Xen community has been trying to
   remove the dependencies on downstream modifications, and establish
   better relationships with other open source communities.  What is the
   current status of Xen in relation with other free software projects?

   At the same time, Xen development proceeded at a fast pace, and several
   new features were introduced; this talk will go through one in
   particular: PV on HVM support in the Linux kernel.  Traditionally,
   Linux has always run on Xen either as a pure PV guest or as a
   virtualization-unaware guest in an HVM domain.  Under the name "PV on
   HVM", work has been done to make Linux aware that is running on Xen,
   and enable as many PV interfaces as possible, even when running in an
   HVM container.

   Stefano Stabellini ( is a Senior
   Software Engineer at Citrix R&D (formerly XenSource, Ltd.), working
   on the open source Xen Platform
   team.  He has been working on Xen since 2007, focusing on several
   different projects, spanning from Qemu to the Linux kernel.  He
   currently maintains libxenlight
   Xen support in Qemu, and PV on HVM
   ( in the
   Linux kernel.  Before joining Citrix, he was a researcher at the
   Institute for Human and Machine Cognition (,
   working on mobile ad hoc networks.


   VCAFE Facility
   350 Ellis Street (near E. Middlefield Road)
   Mountain View, CA 94043

   Directions on how to get there are listed at:

 We've tried our very best for these directions to be accurate.
 If you have any improvements to make, please let SVLUG's volunteers know!
 webmaster at


 If you just can't get enough, a smaller group usually goes to a local
 restaurant/diner after the meeting:  Frankie, Johnnie & Luigi, Too,
 939 West El Camino Real between Shoreline and Castro, Mountain View.

We look forward to seeing you there!

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