Shots directly fired at Rehat. If you're not in the "world" of Linux distributions this is a genuinely impressive commitment that, if they pull it off, makes Ubuntu Pro the most set and forget distro.

Not very open though.

Livepatch is closed, unlike kpatch.

And probably they are going to be using some kind of snap packages somewhere.

Which are annoying to deal with and centralized.

However since many of the things they support are using a GPL license, then its a matter of time until we get a Ubuntu Pro clone.

Also its free for 5 Devices, RHEL is free for 16 but you need to renew every year manually, which is really annoying, looks like Ubuntu Pro doesn't require to do such a thing.

I like the RHEL philosophy in software more, as they tend to make everything open, unlike canonical which is currently pushing a centralized package format and has a history of trying to do things their own way.

This is coming from someone who is using Debian everywhere.

All of the Linux live patching efforts are paid services. I think Gentoo might have some open stuff, but no patch generation/distribution service. IIRC the reason is that you basically need full-time staff knowledgeable in Linux kernel internals to be able to generate the Linux live patches.

https://github.com/dynup/kpatch

But if you mean the Kernel patch packages themselves, then you are right, looks like there are no free patch packages that one can just download and use.