Linux 5.5 Kernel Livepatching To Allow Tracking System State

Submitted by Bryanpwo

It’s been a while since last having any new features to report on in regards to the Linux kernel’s livepatching infrastructure for applying kernel updates without system reboots. With the Linux 5.5 there is a big addition to livepatching and that is support for tracking the system state changes.

Linux 5.5 will bring a new system state API to the livepatching infrastructure. Currently Linux livepatching with the atomic replace / cumulative patches functionality can remove previously applied fixes and other quite versatile support, but when the system state is altered is when future live-patches can go awry.

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