Linux

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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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How to use the Linux kernel's live patching feature (wirekat.com)

submitted 10 months ago by Chewy7324@discuss.tchncs.de to c/linux@lemmy.ml

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[–] Atemu@lemmy.ml 2 points 10 months ago

But I could easily see nixpkgs implement functions that allow nixos-rebuild switch to use either live patching method, or even implementing one specifically for NixOS.

Sadly, I could not. Live patching requires extensive knowledge of the previous system state and that is the antithesis to NixOS where any system state is fully independent of any other possible system state.

nixos-rebuild switch isn't very magical at all once you understand this principle.

Live patching is also not really something you want to use or use frequently. It's more intended for "this super critical box can only be taken down next Saturday but there's a fix for a 0-day in the kernel today that we need ASAP". If it's at all possible to simply reboot, simply reboot (or kexec).