Xen will never be part of Linux

Posted by virtualization.info Staff   |   Monday, May 12th, 2008   |  

Recently ZDNet published a skirmish of words between Ian Pratt, Xen founder and chief architect, and Benny Schnaider, CEO of Qumranet (supporting the development of KVM), about the destiny of Xen and the right to be called hypervisor of KVM.

While the debate itself is not too much interesting, one of the reactions that it provoked is much more.

Anthony Liguori, Software Engineer at Linux Technology Center, contributor for both Xen and KVM ( and of Debunking Blue Pill Myth fame), used his personal blog to provide some interesting perspectives of why KVM was preferred over Xen for the integration in the Linux kernel:

Xen is a hypervisor that is based on the Nemesis microkernel. Linux distributions ship Xen today and by default install a Linux guest (known as domain-0) and do their best to hide the fact that Xen is not a part of Linux. They’ve done a good job, most users won’t even notice that they are running an entirely different Operating System. The whole situation is somewhat absurd though. It’s like if the distributions shipped a NetBSD kernel automatically and switched to using it when you wanted to run a LAMP stack. We don’t ship a plethora of purpose-built kernels in a distribution. We ship one kernel and make sure that it works well for all users. That’s what makes a Linux distribution Linux. When you take away the Linux kernel, it’s not Linux any more.

When people talk about Xen not being merged into Linux, I don’t think they realize that Xen will *never* be merged into Linux. Xen will always be a separate, purpose-built kernel. There are patches to Linux that enable it to run well as a guest under Xen. These patches are likely to be merged in the future, but Xen will never been a part of the Linux kernel…


Labels:

blog comments powered by Disqus


virtualization.info Newest articles
Release: VMware Mirage 5.2

December 11th, 2014

VMware has released version 5.2 of its centralized image management solution for Windows desktops: Mirage. Version 5.2 is the follow-up of version 5.1 which was released in September this year….

Release: VMware vRealize Log Insight 2.5

December 10th, 2014

After announcing vRealize Log Insight 2.5 in October this year, VMware today released the version to its customers. Log Insight is a log aggregation, management and analisys tool, and version…

Release: VMware vRealize Operations Manager 6.0

December 10th, 2014

VMware has released version 6.0 of its monitoring tool vRealize Operations Manager. vRealize Operations Manager provides performance, capacity and configuration management capabilities across physical, virtual and cloud infrastructures. Its…

VMware makes App Volumes generally available

December 10th, 2014

In August this year, VMware acquired CloudVolumes, a company providing an application containerization solution, similar to what Docker is currently providing. Actually buying the CloudVolumes solution was quite confusing, since…

Release: Microsoft Desktop Optimization Pack 2014 R2

December 8th, 2014

Microsoft has released its Desktop Optimization Pack (MDOP) 2014 R2, which is available for Microsoft Customers with Software Assurance. The MDOP 2014 R2 is the follow up of the…

Release: 5nine Manager 6.0 for Hyper-V

December 4th, 2014

5nine has released version 6.0 of its Microsoft hypervisor management solution 5nine Manager. 5nine Manager is capable of managing multiple versions of Microsoft Hyper-V hosts, and also provdes an…

Release: Veeam Management Pack v7 R2 for System Center

December 3rd, 2014

Veaam today released a new version of its Management Pack for Microsoft’s Operations Manager monitoring solution capable of monitoring VMware vSphere, Microsoft Hyper-V and Veeam Backup & Replication environments.
The…

Release: Dell Wyse vWorkSpace 8.5

December 3rd, 2014

Dell has released version 8.5 of its VDI Connection Broker Software Wyse vWorkspace. vWorkSpace was part of the product portfolio of Quest when it was acquired by Dell in September…

Tech: Microsoft Cloud Platform Integration Framework

December 3rd, 2014

Microsoft has published a series of articles on the subject: Cloud Platform Integration Framework. The Cloud Platform Integration Framework (CPIF) provides an enterprise or cloud service provider architect patterns…

Release: VMware Workstation 11 and VMware Player 7 Pro

December 2nd, 2014

On October 1st VMware announced the upcoming features for Workstation version 11 and Player Pro version 7. Today VMware released both version making them generally available to VMware customers. Starting…

OpenStack 2015 Board of Directors Elections

November 28th, 2014

The OpenStack Foundation regularly conducts Elections for Individual Directors of the Foundation’s Board, next elections for the 2015 Board of Directors are going to be held from Monday January…

Paper: Dell Wyse Datacenter for VMware Horizon View Reference Architecture v.6.6

November 28th, 2014

Dell has released a paper titled: "Dell Wyse Datacenter for VMware Horizon View Reference Architecture v.6.6". The paper which contains 110 pages contains a Reference Architecture for the design, configuration…

Paper: Creating a VMware Software-Defined Data Center

November 27th, 2014

VMware has released a paper titled:"Creating a VMware Software-Defined Data Center". The paper which contains 29 pages describes a reference architecture for a Software Defined Data Center (SDDC) using VMware…

Release: 5nine Cloud Security 5.0 for Hyper-V

November 26th, 2014

5nine has released version 5 of its Cloud Security for Hyper-V product. Cloud Security for Hyper-V is a solution which helps to ensure security and compliance for Hyper-V environments. It…

 
Monthly Archive