It's cool but we run Linux in VMs. The VMs can complete a reboot in less than 20s. It's fast enough that it doesn't register on uptime monitors. Live patching adds complexity for not a lot of benefit.
Not to mention that if you're trying to be rebootless you have to worry about running services holding old versions of libraries in memory. Sure there's checkrestart/needrestart, but when reboots are so fast it doesn't matter much.
Not to mention that if you're trying to be rebootless you have to worry about running services holding old versions of libraries in memory. Sure there's checkrestart/needrestart, but when reboots are so fast it doesn't matter much.