On Fri, Feb 27, 2015 at 06:09:52AM -0500, Prarit Bhargava wrote: > What if the system is actually having problems with MCE errors -- > which are leading to system panics of some sort. Do you *really* want > the system to continue on at that point?
No one said that disabling MCA and doing kdump is a 100% reliable thing. When CR4.MCE=0b and an MCE happens, it will shutdown the system, at least on Intel, according to Tony. On AMD, disabling error reporting in addition leads to CR4.MCE being ignored. In any case, disabling MCA contains a risk kdump should be willing to take. Let's ask the reverse question: is kdump prepared to handle an MCE when one happens during dumping? If we have to be really correct, kdump should actually be prepared to handle MCEs and in the case where it cannot recover, stop dumping because the already dumped data might be faulty and corrupted... And print a nasty message on the screen... -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply. -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/