Livepatching applies selected Linux kernel fixes while the system remains operational. This enables administrators to fix critical kernel vulnerabilities without service interruption and reboots, which is especially important for servers, cloud instances, industrial systems, and remote edge devices where downtime is costly or risky.
Canonical also emphasizes that Livepatch does not eliminate the need for reboots. It only reduces urgent, unscheduled reboots between planned maintenance windows, but regular reboots are still required to fully adopt new kernel versions and clear system state.
One more thing that needs to be made clear is that Livepatch is not intended for typical desktop users.
Will it eventually come to the desktop user? Would you welcome it?