1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

KVM Pushes Linux Virtualization Forward In Linux 3.13

Linux Kernel

Published on 14 November 2013 03:24 PM EST
Written by Michael Larabel in Linux Kernel
Comment On This Article

The Kernel-based Virtual Machine updates for the Linux 3.13 kernel were filed today and includes a fair amount of improvements for virtualization on PowerPC hardware, but there's also some x86 improvements too.

The PowerPC version of KVM for Linux virtualization allows the HV and emulation versions of the Kernel-based Virtual Machine to now co-exist in the same Linux kernel image. There's also other assorted PowerPC virtualization improvements.

For more common x86 virtualizationm, there's improvements to nested virtualization and various bug-fixes.

ARM virtualization is still in its infancy since hardware-assisted virtualization became possible with the Cortex-A15 SoCs. On the KVM ARM front, there's now transparent huge-page support, improved over-commit handling, and support for big endian guests.

The last KVM feature advertised for the Linux 3.13 kernel is a nw interface to connect KVM with VFIO. This change helps when passing devices to guests that use NoSnoop PCI translations so drivers inside the guest can use WBINVD instructions -- this along with user-space work allows for some NVIDIA graphics cards to work on Windows guests. As covered on Phoronix a few days ago, there continues to be KVM and VFIO work for passing graphics cards to guest VMs so that they can use the hardware directly from a real driver on the guest operating system.

More of the KVM improvement details for the Linux 3.13 merge window can be found from the pull request issued by Paolo Bonzini.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Linux Hardware Reviews
  1. Intel Xeon E5-1680 v3 & E5-2687W v3 Compared To The Core i7 5960X On Linux
  2. Intel 120GB 530 Series SSD Linux Performance
  3. Btrfs/EXT4/XFS/F2FS RAID 0/1/5/6/10 Linux Benchmarks On Four SSDs
  4. AMD's Windows Catalyst Driver Remains Largely Faster Than Linux Drivers
Latest Linux Articles
  1. NVIDIA vs. Nouveau Drivers With Linux 3.18 + Mesa 10.4-devel
  2. Is The Open-Source NVIDIA Driver Fast Enough For Steam On Linux Gaming?
  3. Linux 3.18 File-System Performance Minimally Changed But Possible Regressions
  4. AMD Radeon Gallium3D Is Catching Up & Sometimes Beating Catalyst On Linux
Latest Linux News
  1. More File-System Tests Of The Linux 3.18 Kernel
  2. Using NVIDIA's NVENC On Linux With FFmpeg
  3. There's Talk Again About An "Open To The Core" Ubuntu Laptop
  4. PowerVR SGX Driver Code Gets Leaked
  5. V2 Of KDBUS Published For Linux Kernel Review
  6. VirtualBox 4.3.20 Arrives, Still No Sign Of VirtualBox 4.4
  7. Scientific Linux 6.6 vs. Scientific Linux 7.0 Benchmarks
  8. Qualcomm Looks To Get Into The ARM Server Business
  9. HHVM 3.4 Adds New Features, Support
  10. More Radeon Driver Changes Queued For Linux 3.19
Latest Forum Discussions
  1. Cant get working Kaveri APU - A10-7850k
  2. Script for Fan Speed Control
  3. Roadmap to Catalyst 14.10 ?
  4. Debian Init System Coupling Vote Results
  5. The Slides Announcing The New "AMDGPU" Kernel Driver
  6. Updated and Optimized Ubuntu Free Graphics Drivers
  7. Debian Developer Resigns From The Systemd Maintainership Team
  8. Ubuntu Developers Still Thinking What To Do About Adobe Flash Support