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  • Xen Summit
    download as zip file OpenStack Xen and XCP Cloud leaders such as Rackspace and Internap are building their next generation cloud using OpenStack and Xen XenAPI not everyone uses OpenStack with KVM Lets take a look at how OpenStack and Xen work together and look at how you can get more involved John Garbutt Senior Software Developer Citrix John Garbutt is a Senior Software Developer with Citrix Since October 2010

    Original URL path: http://xen.xensource.com/xensummit/xs12na_talks/M8b.html (2016-02-13)
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  • Xen Summit
    months of 2011 the Xen Community started an effort to port Xen to ARMv7 with virtualization extensions using the Cortex A15 processor as reference platform The new Xen port is exploiting this set of hardware capabilities to run guest VMs in the most efficient way possible while keeping the ARM specific changes to the hypervisor and the Linux kernel to a minimum Developing the new port we took the chance to remove legacy concepts like PV or HVM guests and only support a single kind of guests that is comparable to quotPV on HVM in the Xen X86 world This talk will explain the reason behind this and other design choices that we made during the early development process and it will go through the main technical challenges that we had to solve in order to accomplish our goal Notable examples are the way Linux guests issue hypercalls and receive event channels notifications from Xen Stefano Stabellini Senior Software Engineer Citrix Stefano Stabellini is a Senior Software Engineer at Citrix 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

    Original URL path: http://xen.xensource.com/xensummit/xs12na_talks/T3.html (2016-02-13)
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  • Xen Summit
    The HaLVM A Simple Platform for Simple Platforms Over the last six years Galois has been developing the Haskell Lightweight Virtual Machine or HaLVM a lightweight virtual machine that runs directly on the Xen hypervisor The HaLVM s design is based on a notion of minimalism Authors of HaLVM domains include only those libraries and features they require allowing the HaLVM to have a very small initial resource footprint that scales in a very obvious fashion In doing so we hope to combine the minimalism and flexibility of a small kernel with an extended set of libraries with the simplicity and reliability of the strongly typed high level language Haskell While initially designed for running operating system design experiments the HaLVM has grown over time to be a suitable platform for writing simple network appliances with a very narrow resource footprint This work has been enabled by other Galois projects a TCP compliant network stack written in Haskell and a fairly complete file system written in Haskell In the end because we use Haskell and provide these libraries at the Haskell level programmers can create complex software structures quickly easily and with the added assurance that the Haskell type system provides In this talk we will provide an overview of the HaLVM and its design principles pointing out where the HaLVM shines and where it is weak and continue with some of our experiences using it over the last six years Adam Wick Galois Adam Wick currently works for Galois Inc a small research and development company in Portland OR At Galois Adam runs the secure networking and network defense group trying to use cutting edge technology and out of the box thinking to protect critical networks Previously Adam has performed research in the related areas of operating systems and

    Original URL path: http://xen.xensource.com/xensummit/xs12na_talks/M9b.html (2016-02-13)
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  • Xen Summit
    attendees for making XenSummit an interactive and fun conference with lots of discussions You can find presentations on slideshare and videos on vimeo We will also embedded both in the agenda The slides are also available for download as zip file Xen and Client Virtualization the case of XenClient XT This talk will discuss the challenges of client virtualization and introduce at a technical level XenClient XT a security oriented client virtualization product by Citrix By describing XenClient XT architecture and features it will be shown how the unique Xen s design and its support for modern x86 platform hardware can increase security and isolation among VMs Disaggregation of services provided by the platform will be a key of this talk It will also be shown how third party software components can provide services to VMs in a secure and controlled way Gianluca Guida Senior Software Engineer Citrix Gianluca Guida is a Senior Software Engineer at Citrix He started working on Xen in 2007 when he joined the soon to be acquired XenSource He has joined back Citrix in 2011 working in the XenClient Team Download original News Press Releases Blog Resources Wiki Sources Downloads Governance Security Information Connect Mailing

    Original URL path: http://xen.xensource.com/xensummit/xs12na_talks/M10.html (2016-02-13)
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  • Xen Summit
    a Service compute clouds provide a flexible hardware platform on which customers host applications as a set of appliances e g web servers or databases Each appliance is a VM image containing an OS kernel and userspace processes within which applications access resources via traditional APIs such as POSIX However the flexibility provided by the hypervisor comes at a cost the addition of another layer in the already complex software stack which impacts runtime performance and increases the size of the trusted computing base Given that modern software is generally written in high level languages that abstract the underlying OS we revisit how these appliances are constructed with our Mirage operating system Mirage supports the progressive specialisation of source code and gradually replaces traditional OS components with customisable libraries ultimately resulting in unikernel VMs sealed fixed purpose VMs that run directly on the hypervisor Developers no longer need to become sysadmins expert in the configuration of all manner of system components to use cloud resources At the same time they can develop their code using their usual tools only making the final push to the cloud once they are satisfied their code works As they explicitly link in components that would normally be provided by the host OS the resulting unikernels are also highly compact facilities that are not used are simply not included in the resulting microkernel binary This talk will describe the architecture of Mirage and show a quick demonstration of how to build a web server that runs as a unikernel on a standard Xen installation Anil Madhavapeddy University of Cambridge Anil Madhavapeddy is a Senior Research Fellow at Wolfson College Cambridge based in the Systems Research Group in the Computer Laboratory He tackles on the problem of constructing efficient large scale secure systems often via advances

    Original URL path: http://xen.xensource.com/xensummit/xs12na_talks/M10b.html (2016-02-13)
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  • Xen Summit
    The slides are also available for download as zip file Xen This talk with discuss the design and implementation of a new type of hypervisor derived from the Xen code base Xen has been built and optimized for modern CPUs and chipsets and thus assumes the presence of CPU and IO MMUs that are virtualization capable Xen borrows extensively from the production proven and tuned Xen code base but removal of support for older hardware and PV MMU guests has enabled significant simplification of the code Xen supports optimizations in support of running large numbers of very similar virtual machines through the support of a native vmfork optimization and efficient re merging of shareable pages The primary goal of Xen has been to run as a late load hypervisor on an existing OS It has a narrow and well defined interface to the services it expects from the underlying OS which makes it easy to port to other OSes or to enable it to run on bare metal During initialisation Xen can de privilege the running host OS into a VM container enabling it to establish itself as the most privileged software component in the system Thus Xen enforces the privacy and integrity of itself and VMs that it is running against a faulty or malicious host OS while co operating with the host OS on the actual allocation of physical resources Ian Pratt Co founder Bromium Inc Xen org Chairman Ian Pratt runs product development at Bromium Inc a startup focussed on making computer systems more trustworthy by using hardware assisted virtualization to provide fine grained protection through task isolation while maintaining an unchanged user experience He was formerly a member of senior faculty at the University of Cambridge Computer Laboratory where he led the systems research group for

    Original URL path: http://xen.xensource.com/xensummit/xs12na_talks/T6.html (2016-02-13)
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  • Xen Summit
    Thank you to all the speakers for contributing and to all the attendees for making XenSummit an interactive and fun conference with lots of discussions You can find presentations on slideshare and videos on vimeo We will also embedded both in the agenda The slides are also available for download as zip file Linux based Stub domain As the current stubdomain based on minios is difficult to maintain we have worked on a stubdomain based on Linux This helps to use QEMU upsteam in the stubdom with little change So first I will present how a Linux based stubdomain is built and lauched and the difficulties around it Then to see if this is a viable option I will show disk and network benchmarks to compare it with a traditional QEMU in dom0 configuration To finish I will present the current limitations of this type of stubdomains Anthony PERARD Anthony PERARD is a Software Development Engineer at Citrix since 2 year His main task was to upstream the Xen s fork of QEMU Download original News Press Releases Blog Resources Wiki Sources Downloads Governance Security Information Connect Mailing Lists Search Mailing Lists IRC Twitter LinkedIn Miscellaneous Contact us Legal and

    Original URL path: http://xen.xensource.com/xensummit/xs12na_talks/M11b.html (2016-02-13)
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  • Xen Summit
    in the agenda The slides are also available for download as zip file XenSummit Party The XenSummit Party will be held at East Village Tavern and Bowl in the Gaslamp Quarter of San Diego We will lay on buses between the hotel and the venue Food and drink tickets are available and we booked the bowling lanes for you Location In case you want to make your own way the

    Original URL path: http://xen.xensource.com/xensummit/xs12na_talks/Party.html (2016-02-13)
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