Kernel Mode-Setting Driver Comes To VirtualBox
Written by Michael Larabel in Virtualization on 26 November 2011 at 01:11 AM EST. 2 Comments
It looks like an upcoming advancement to Oracle VM VirtualBox is support for a kernel mode-setting (KMS) driver.

Committed to the VirtualBox guest driver source-code in recent days is support for a KMS driver (e.g. this commit). It's part of the VirtualBox guest additions for the VirtuaBox Linux DRM component, but doesn't affect other platforms or make any other changes.

Oracle hasn't officially announced this new KMS driver for VirtualBox, but it's in the code-base and should be part of VirtualBox 4.2 Linux Guest Additions or whatever the next major release is dubbed.

Sadly there's no indications that they will push for mainline Linux kernel integration of this KMS driver, like their other guest additions kernel drivers, but is likely to just likely to keep shipping separately. Granted, many kernel developers feel the current VirtualBox drivers are tainted crap.

Hopefully Oracle also has some user-space 3D improvements for VirtualBox planned as the current OpenGL performance is rather poor.

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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter or contacted via

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