VFIO Driver Merged Into Linux 3.6 Kernel
Written by Michael Larabel in Linux Kernel on 1 August 2012 at 06:53 AM EDT. Add A Comment
After being in development for years, the VFIO user-space driver interface has been merged into the mainline Linux kernel.

As another feature of the Linux 3.6 kernel is support for VFIO.

Linux VFIO allows for a secure interface for device access using IOMMU protection for cases like securely assignming a physical device to a Linux virtual machine. Support is already planned with the VFIO driver so that PCI devices can be assigned to QEMU guests in a secure manner and will eventually replace x86-specific assignment code within KVM.

The interface is more secure due to its use of IOMMU and is not specific to any particular architecture or virtualization method. The PowerPC KVM developers have already expressed interest in VFIO.

The final pull request with four patches that finally went in came from Alex Williamson on the kernel mailing list. Linus Torvalds pulled the tree over the night (merge).

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Michael Larabel is the principal author of Phoronix.com 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 OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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