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

SUSE Will Mainline Their kGraft Live Kernel Patching

Linux Kernel

Published on 28 March 2014 02:13 PM EDT
Written by Michael Larabel in Linux Kernel
Comment On This Article

SUSE engineers will attempt to merge their kGraft live kernel patching mechanism into the mainline Linux kernel.

Back in February kGraft was announced as a research project out of SUSE Labs for live patching a running Linux kernel in a different way than the well known Ksplice alternative for live Linux kernel patching. As I wrote yesterday, SUSE released the source code to kGraft to coincide with the Linux Foundation Collaboration Summit in Napa and the talk they gave there on this new technology.

Vojtěch Pavlík of SUSE was the speaker to share more with kernel developers about kGraft. Those interested in live patching the kernel can find the PDF slides available with all of the details. Some of the key notes from this summit presentation include:

- The advertised benefits of kGraft over other live kernel patching solutions include the kernel not ever needing to be stopped during the patching process, kGraft patch sources can undergo code review, and kGraft is lean. The kGraft source code is small due to leveraging other parts of the Linux kernel.

- A kGraft patch ends up being a .ko kernel module in a KMP RPM that replaces whole functions within the Linux kernel. New RPMs/modules can replace existing kGraft patches.

- kGraft is only designed to fix critical and simple bugs.

- Any changes requiring kernel data structure layout changes require special attention.

- kGraft depends on a stable build environment.

- SUSE developers wil submit kGraft for inclusion into Linus's upstream Linux kernel.

- SUSE intends to work together with the community and other developers to make a common standard for live kernel patching.

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. Preliminary Tests Of Intel Sandy Bridge & Ivy Bridge vs. Broadwell
  2. AMD FX-8320E Performance On Linux
  3. Linux Compiler Benchmarks Of LLVM Clang 3.5 vs. LLVM Clang 3.6-rc1
  4. Intel Broadwell HD Graphics 5500: Windows 8.1 vs. Linux
  5. Linux Benchmarks Of NVIDIA's Early 2015 GeForce Line-Up
  6. NVIDIA GeForce GTX 960: A Great $200 GPU For Linux Gamers
Latest Linux News
  1. NVIDIA Tegra DRM Driver Supports Atomic Mode-Setting In Linux 3.20
  2. Linux "GHOST" Vulnerability Hits Glibc Systems
  3. Linux Game Publishing Remains Offline, Three Years After The CEO Shakeup
  4. PlayStation 4 System Compiler Support Landing In LLVM
  5. Now-Closed KDE Vulnerabilities Remind Us X11 Screen Locks / Screensavers Are Insecure
  6. Vivaldi: A New Chromium-Powered, Multi-Platform Browser
  7. KDE Plasma 5.2 Officially Released
  8. Intel Broadwell On Linux Has Working OpenCL 1.2, VP8 Video Acceleration
  9. GParted 0.21 Brings ReFS Detection, EXT4 For RHEL5, Reiser4 For Linux 3.x
  10. Wine Staging Update Has Better CUDA Support, Driver Testing Framework
Most Viewed News This Week
  1. Windows 10 To Be A Free Upgrade: What Linux Users Need To Know
  2. LibreOffice 4.4 Is Coming Soon With New Features
  3. Google Admin Encourages Trying Btrfs, Not ZFS On Linux
  4. TraceFS: The Newest Linux File-System
  5. My Initial Intel Broadwell Linux Experience With The ThinkPad X1 Carbon
  6. Interstellar Marines On Linux With Catalyst: Bull S*#@
  7. Keith Packard Leaves Intel's Linux Graphics Work
  8. Broadwell Linux Ultrabook Running MUCH Cooler Than Haswell