Before Christmas, the Xen Project ran a community consultation to refine its Security Problem Response Process.  We recently approved changes that, in essence, are tweaks to our existing process, which is based on a Responsible Disclosure philosophy. Responsible Disclosure and our Security Problem Response Process are important components
And by “a ride”, we actually mean a ride. Like this:  Like, will Xen run in your car? Well, it appears it will! It all started with ARM Support In fact, Xen Project developers started woking on supporting the ARM architecture (with hardware virtualization capabilities) a couple of
I’ve been release coordinator for Xen’s 4.3 and 4.4 releases. For the 4.5 release, I’ve handed this role off to Konrad Wilk, from Oracle. In this blog, I try to capture some of my thoughts and experience about one aspect of release management: deciding
With Xen on ARM getting out of the early preview phase and becoming more mature, it is time to run a few benchmarks to check that the design choices paid out, the architecture is sound and the code base is solid. It is time to find out how much is
This week, we are reblogging this excellent piece from Luis from SUSE. The article came about because of a discussion Luis had at the Linux Foundation Collaboration Summit in Napa, and he decided to write down some basic generals of the xenstore, a review of its first implementation and a
Background The Graphics Processing Unit (GPU) has become a fundamental building block in today’s computing environment, accelerating tasks from entertainment applications (gaming, video playback, etc.) to general purpose windowing (Windows* Aero*, Compiz Fusion, etc.) and high performance computing (medical image processing, weather forecast, computer aided designs, etc.). Today, we
Currently the Xen Project’s automatic testing setup runs on a small set of hardware in space borrowed from Citrix. Because it’s on the Citrix network, it’s not possible to give access to other community members. The underlying systems are creaking rather. And the system is too small
Today I’d like to talk about a functionality of Xen you may not have heard of, but might have actually used without even knowing it. If you use memory ballooning to resize your guests, you’ve likely used “populate-on-demand” at some point. As you may know, ballooning
The Linux v3.14 will sport a new mode in which the Linux kernel can run thanks to Mukesh Rathor (Oracle). Called ‘ParaVirtualized Hardware,’ it allows the guest to utilize many hardware features – while at the same time having no emulated devices. It is the next step in PV evolution,
As most FreeBSD users already know, FreeBSD 10 has just been released, and we expect this to be a very good release regarding Xen support. FreeBSD with Xen support includes many improvements, including several performance and stability enhancements that we expect will greatly please and interest users. With many bug
Originally posted on my blog, here. Xen has had a long history in libvirt. In fact, it was the first hypervisor supported by libvirt. I’ve witnessed an incredible evolution of libvirt over the years and now not only does it support managing many hypervisors such as Xen,
The Xen ARINC 653 scheduler is a real time scheduler that has been in Xen since 4.1.0. It is a cyclic executive scheduler with a specific usage in mind, so unless one has aviation experience they are unlikely to have ever encountered it. The scheduler was created