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

QEMU Bochs KMS Driver Might Not Have A Future

Virtualization

Published on 06 November 2013 07:01 AM EST
Written by Michael Larabel in Virtualization
Comment On This Article

Announced last month was a new work-in-progress DRM/KMS driver implementing support for the virtual VGA cards using the Bochs DISPI interface, namely for the QEMU standard VGA output used commonly in Linux desktop virtualization setups.

This new Bochs DRM driver was part of a larger DRM patch-set for QEMU emulated graphics support with small improvements for Cirrus and QXL graphics. When it comes to having KMS/DRM drivers for use by QEMU, there is already the Cirrus KVM/QEMU driver and QXL DRM driver for Red Hat's SPICE protocol.

The basic patches from this six-patch series were merged today for drm-next and going into the Linux 3.13 kernel, but the Bochs driver wasn't accepted. The developer behind this work, Red Hat's Gerd Hoffmann, had said the driver was a work-in-progress and wasn't calling for its mainline inclusion. There also wasn't any major improvements to this standard driver over the past month.

In a mailing list post by DRM subsystem maintainer David Airlie, he said, "I'll try and find some time to look at the bochs driver, though is it really much more than we have with the simple drm layer that David Herrmann is producing?" What David noted as the other alternative is SimpleDRM, which is a generic KMS/DRM driver of sorts and seeks to replace vesafb, efifb, simplefb, and vgafb. SimpleDRM is basically for a single-output single-mode driver driver that's basic yet compliant with the DRM interfaces.

The Bochs DRM driver is just about a mode-setting driver anyhow and what most Linux users dealing with open-source desktop virtualization are really waiting for is 3D/OpenGL support for guest virtual machines, which hopefully will be provided in the months ahead by Virgil 3D for Gallium3D-based guest VM acceleration that will hopefully be able to take on the 3D acceleration provided for years already by VMware's products as well as VM VirtualBox.

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 Articles & Reviews
  1. Khronos Group Announces Vulkan, OpenCL 2.1, SPIR-V
  2. Samsung 850 EVO SSD Linux Benchmarks
  3. Kubuntu 15.04 Is Turning Out Quite Nice, Good Way To Try Out The Latest KDE
  4. 5-Way Linux Distribution Comparison On The Core i3 NUC
  5. OCZ ARC 100 Linux SSD Benchmarks
  6. Lenovo ThinkPad X1 Carbon Works Great As A Linux Ultrabook
Latest Linux News
  1. SPIR-V In GCC Is Already Being Talked About
  2. PC-BSD 10.1.2 To Add Tor Mode, LibreSSL & Other Features
  3. Valve Launches SteamOS Sale, Confirms A Lot Of New Linux Games
  4. Ubuntu Cloud Switches Over To Using Systemd By Default
  5. System76 Introduces The Broadwell-Powered, Ubuntu-Loaded "Meerkat"
  6. Xfce 4.12 Might Make It For Fedora 22
  7. Pictures Of The Near Production Ready Ubuntu Tablet
  8. OpenVG Support Stripped From Gallium3D
  9. Mozilla Is Getting Excited About WebGL 2
  10. ZOTAC Announces Steam Machine SN970, Powered By SteamOS
Most Viewed News This Week
  1. More Proof That Allwinner Is Violating The GPL
  2. The Tremendous Features Of Fedora 22
  3. Krita 2.9 Released, Their Biggest Release Ever
  4. Confirmed: Vulkan Is The Next-Gen Graphics API
  5. A Single UEFI Executable With The Linux Kernel, Initrd & Command Line
  6. Xfce 4.12 Released After Nearly Three Years Of Work
  7. 8cc: A Small C11 Compiler
  8. LLVM 3.6 & Clang 3.6 Deliver More Features, Complete C++14 Support