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Linux Kernel Livepatch ​

Patch kernel without reboot.

Ref: https://www.kernel.org/doc/html/latest/livepatch/livepatch.html

How it works?

Livepatch 原理:原函式開頭的 noop 改成呼叫 ftrace,再導向新函式

頁面歷史

Just observe 👀