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 Benchmarking Platform
Phoromatic Test Orchestration

Kpatch Gets Exposure This Week, kGraft Misses Out

Linux Events

Published on 19 August 2014 12:46 PM EDT
Written by Michael Larabel in Linux Events
Comment On This Article

This week at LinuxCon Chicago are two talks about Red Hat's Kpatch live kernel patching solution to reduce downtime. However, there aren't any scheduled talks about SUSE's kGraft solution with neither yet being in the mainline kernel.

On Thursday at the Sheraton in Chicago will be the "Kpatch Without Stop Machine" presentation by Hitachi's Masami Hiramatsu while on Friday afternoon will be "kpatch: Have Your Security And Eat It Too!" by Red Hat's Josh Poimboeuf.

Kpatch is still aiming to be an upstream Linux kernel feature for live kernel patching to reduce system downtime. Red Hat has already declared their solution "stable and useful" while being 100% self-contained with support for Fedora, Ubuntu, Debian, Arch, and (unofficially) on Red Hat Enterprise Linux 7 and other EL7 variants.

Kpatch features support for patch rollback, patch on reboot, stacking multiple patches, atomic patch upgrades, module patching, and other functionality, but right now it only works for about ~80% of the CVE security patches against the kernel and will only work on Intel/AMD x86_64 kernels.

Before those new to live kernel patching think this will mean never ever rebooting your system again or you'll be able to jump to new major revisions of the kernel without reboots, Red Hat cautions that Kpatch requires a human to analyze each patch prior to using it against Kpatch to ensure it's safe to apply in a live patching context -- the same safety procedure is also applicable to kGraft and Ksplice.

Those wishing to learn more about Kpatch but are unable to make it to LinuxCon North America this week in Chicago, the two Kpatch presentation slides have already been uploaded here and here.

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. GLAMOR + RadeonSI 2D Acceleration Is Quite Good For Open-Source AMD 2D Performance
  2. AMD Radeon R9 290 OpenGL On Ubuntu 15.04: Catalyst vs. RadeonSI Gallium3D
  3. Ubuntu 15.04 Offers Faster OpenGL For AMD Radeon GPUs On Open-Source
  4. Ubuntu 15.04 Brings Some Graphics Performance Improvements For Intel Haswell
  5. Sub-$20 802.11n USB WiFi Adapter That's Linux Friendly
  6. The Lenovo T450s Is Working Beautifully With Linux
Latest Linux News
  1. A Lot Of Improvements Are Coming For Mir 0.13, Including Work Towards Libinput
  2. Mobile Optimizations Coming For Phoronix
  3. Wayland 1.8 Alpha Release Delayed
  4. Godot Game Engine 1.1 Up To RC State
  5. ATI Rage128 Driver Now Has RandR Support
  6. Microsoft's Visual C++ Team Is Improving Clang For Windows
  7. Kodi 15.0 Beta 1 Released
  8. Lucid Sleep Support Is Being Worked On For The Upstream Linux Kernel
  9. Improvements On The Way For GNOME's Nautilus File Manager
  10. Wine 1.7.42 Implements More Of Direct2D
Most Viewed News This Week
  1. It Doesn't Look Like KDBUS Will Make It For Linux 4.1
  2. Trying Out Microsoft Visual Studio Code On Linux
  3. The Many Features Of The Linux 4.1 Kernel
  4. Microsoft Releases New Code IDE For Linux!
  5. Linux 4.1-rc1 Kernel Released, Packs In Several New Features
  6. GCC 4.9.2 vs. GCC 5 Benchmarks On An Intel Xeon Haswell
  7. QEMU 2.3 Officially Released
  8. Debian 9.0 Is Codenamed Stretch