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Linux 5.2 Live-Patching Makes Use Of GCC 9 Option That May Slowdown Select Cases

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Development
GNU
Linux

If you make use of Linux kernel live-patching or even just have CONFIG_LIVEPATCH enabled, when switching to Linux 5.2 and building with GCC 9, the performance may be impacted in select workloads.

The Linux livepatching infrastructure updates were sent in this week for the Linux 5.2 kernel merge window. The changes aren't too exciting but does include the change we previously outlined of turning on GCC 9's live-patching option as part of the kernel build when CONFIG_LIVEPATCH is enabled.

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