It seems that Red Hat, too, has a project
working on patching running kernels. "kpatch allows you to patch a Linux kernel without rebooting or restarting any processes. This enables sysadmins to apply critical security patches to the kernel immediately, without having to wait for long-running tasks to complete, users to log off, or scheduled reboot windows. It gives more control over uptime without sacrificing security or stability.
" It looks closer to ksplice than to SUSE's kGraft in that it patches out entire functions at a time.
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