cstamas

By checking sysfs reporting, the mitigations=off and all those from URL above ends up in same results.

Are all these really need? According to this https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux... to me sounds like only "mitigations=off" is the one is needed, no?

Need to check in your distro kernel. For example, current kernel on Linux Mint (is Ubuntu based distro, so I guess Ubuntu as well) has this changelog: http://changelogs.ubuntu.com/changelogs/pool/main/l/linux/li... and as you see, it is backported and supported.