On Thu, 12 Feb 2015, Peter Zijlstra wrote: > Its not at all clear how all this would work to me. And I'm not > motivated enough to go try and reverse engineer your patch; IMO > livepatching is utter fail. > > If your infrastructure relies on the uptime of a single machine you've > lost already. Well, the fact indisputable fact is that there is a demand for this. It's not about one machine, it's about scheduling dowtimes of datacentres. But if this needs to be discussed, it should be done outside of this thread I guess. > FWIW, the barriers in klp_update_task_universe() and > klp_set_universe_goal() look like complete crack, and their comments are > seriously deficient. These particular barriers seem correct to me; you basically need to make sure that whenever a thread with TIF_KLP_NEED_UPDATE goes through do_notify_resume(), it sees proper universe number to be converted to. -- Jiri Kosina SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe live-patching" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
