Linux Kernel to Add VMI

Mar 27, 2007

The next stable update to the Linux kernel, Version 2.6.21, is slated to include a new feature submitted by VMware called Virtual Machine Interface.

Virtualized operating system instances can enjoy performance and management benefits if their kernels are modified to communicate with the hypervisor under which they run. This arrangement is called paravirtualization.

The initial promise of Virtual Machine Interface was that it would provide a common protocol across which multiple hypervisors could communicate with the Linux kernel instances they paravirtualize, as opposed to having different sets of hooks built into Linux for different hypervisors.

The idea is similar to the Linux Security Module framework, on which both the SELinux (Security-Enhanced Linux) and AppArmor rights-hardening technologies are built.

However, VMware's approach has faced some pushback among kernel developers, and VMware ended up modifying VMI to plug into a separate kernel paravirtualization interface, called paravirt_ops, which made its way into the stable Linux kernel with the last update (2.6.20).

Dialed-back ambitions or no, VMI is set to enter active service soon, as VMware's forthcoming Workstation 6.0 will make use of VMI-enabled kernels, including those that drive Linux distributions such as the soon-to-ship Ubuntu 7.04.

Copyright 2007 by Ziff Davis Media, Distributed by United Press International

Explore further: Unsavory hits the App Store and Google Play

Related Stories

HP sells stake in China unit for $2.3 bn

34 minutes ago

Hewlett-Packard announced Thursday it was selling a 51 percent stake in its China-based server business, creating a joint venture with Tsinghua Holdings that will be a sector leader in China.

ICANN chief stepping down in early 2016

18 minutes ago

The head of the group that oversees all Internet addresses will step down early next year, after a plan to end US oversight of the key nonprofit organization.

Recommended for you

Unsavory hits the App Store and Google Play

May 19, 2015

Almost 90 percent of restaurant workers in the United States do not have access to paid sick days. Unsavory, a new mobile game available for iOS and Android lets players take the role of these workers preparing food to see ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.