On Mon, Jan 23, 2017 at 04:01:51PM +0800, Xunlei Pang wrote: > We met an issue for kdump: after kdump kernel boots up, > and there comes a broadcasted mce in first kernel, the How does that even happen? Lemme try to understand this correctly: the first kernel gets an MCE, kdump starts and boots a *whole* kernel and *then* you get the broadcasted MCE? I have real hard time believing that. What happened to the approach of clearing CR4.MCE before loading the kdump kernel, in native_machine_shutdown() or wherever does the kdump gets loaded... -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.