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.

Latest Linux Hardware Reviews
  1. Mini-Box M350: A Simple, Affordable Mini-ITX Case
  2. Overclocking The AMD AM1 Athlon & Sempron APUs
  3. AMD Athlon 5350 / 5150 & Sempron 3850 / 2650
  4. Upgraded Kernel & Mesa Yield A Big Boost For Athlon R3 Graphics
Latest Linux Articles
  1. Ubuntu 12.04.4 vs. 13.10 vs. 14.04 LTS Desktop Benchmarks
  2. AMD OpenCL Performance With AM1 Kabini APUs
  3. A Quick Look At GCC 4.9 vs. LLVM Clang 3.5
  4. Are AMD Athlon/Sempron APUs Fast Enough For Steam On Linux?
Latest Linux News
  1. Ubuntu 14.04 LTS "Trusty Tahr" Officially Released
  2. Ubuntu 12.04 LTS vs. 14.04 LTS Server Benchmarks
  3. QEMU 2.0 Released With ARM, x86 Enhancements
  4. Running The Unity 8 Preview Session On Ubuntu 14.04 LTS
  5. R600 Gallium3D Disables LLVM Back-End By Default
  6. Fedora 21 Gets GNOME 3.12, PHP 5.6, Mono 3.4
  7. Fedora Workstation Is Making Me Quite Excited
  8. Maynard: A Lightweight Wayland Desktop
  9. Chromium Browser Going Through Growing Pains In Ubuntu 14.04
  10. KDE 4.13 Is Being Released Today With New Features
  11. Trying Out Radeon R9 290 Graphics On Open-Source
  12. Intel Broadwell GT3 Graphics Have Dual BSD Rings
Latest Forum Discussions
  1. After Jack Keane, RuseSoft will briing Ankh 3 to Linux through Desura
  2. Updated and Optimized Ubuntu Free Graphics Drivers
  3. Suspected PHP Proxy Issue
  4. Linux Kernel Developers Fed Up With Ridiculous Bugs In Systemd
  5. The GNOME Foundation Is Running Short On Money
  6. Change installation destination from home directory
  7. Bye bye BSD, Hello Linux: A Sys Admin's Story
  8. New tool for undervolt/overclock AMD K8L and K10 processors