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
Add A Comment

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 Linux News
  1. The CompuLab Fitlet Is A Neat Little Linux PC With AMD SoC
  2. AMD & Others Are Working On The LLVM SPIR-V Converter
  3. Linux 4.1-rc5 Kernel Released
  4. Mesa 10.5.6 Brings Fixes All Over The Place
  5. NVIDIA's Proprietary Driver Is Moving Closer With Kernel Mode-Setting
  6. The Latest Linux Kernel Git Code Fixes The EXT4 RAID0 Corruption Problem
  7. Features Added To Mesa 10.6 For Open-Source GPU Drivers
  8. Ubuntu's LXD vs. KVM For The Linux Cloud
  9. Fedora Server 22 Benchmarks With XFS & The Linux 4.0 Kernel
  10. GCC 6 Gets Support For The IBM z13 Mainframe Server
Latest Articles & Reviews
  1. Opening The Gates To Our Daily Open-Source Linux Benchmark Results
  2. The Latest Features For Linux Performance Management + Benchmark Monitoring
  3. Noctua NH-U12DX i4 + NF-F12
  4. Btrfs RAID 0/1 Benchmarks On The Linux 4.1 Kernel
Most Viewed News This Week
  1. The Linux 4.0 Kernel Currently Has An EXT4 Corruption Issue
  2. The Linux 4.0 EXT4 RAID Corruption Bug Has Been Uncovered
  3. Microsoft Open-Sources The Windows Communication Foundation
  4. Systemd 220 Has Finally Been Released
  5. NVIDIA's Proprietary Driver Is Moving Closer With Kernel Mode-Setting
  6. Another HTTPS Vulnerability Rattles The Internet
  7. LibreOffice 5.0 Open-Source Office Suite Has Been Branched
  8. LibreOffice 5.0 Beta 1 Released