[V4 PATCH 4/4] x86/apic: Introduce noextnmi boot option

Borislav Petkov bp at alien8.de
Thu Oct 1 04:01:10 PDT 2015

On Thu, Oct 01, 2015 at 10:24:19AM +0000, 河合英宏 / KAWAI,HIDEHIRO wrote:
> But how do we check if the starting kernel is a dump capture kernel?

How does that first kernel pass info to the capture kernel?

> I think using cmdline option is the simplest way.

More often than not, simplest != correct.

What happens if I pass this option to the first kernel? All of a sudden
my *first* kernel doesn't get external NMIs.

Do you catch my drift?


ECO tip #101: Trim your mails when you reply.

More information about the kexec mailing list