From mboxrd@z Thu Jan  1 00:00:00 1970
From: Don Slutz <dslutz@verizon.com>
Subject: Re: [PATCH] x86/nmi: Make external NMI injection
 reliably crash the host
Date: Tue, 26 Aug 2014 12:06:27 -0400
Message-ID: <53FCB083.2050603@terremark.com>
References: <1409047805-17893-1-git-send-email-ross.lagerwall@citrix.com>
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Cc: Keir Fraser <keir@xen.org>, Jan Beulich <jbeulich@suse.com>
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On 08/26/14 06:10, Ross Lagerwall wrote:
> Change the watchdog handler to only "tick" if the corresponding perf
> counter has overflowed; otherwise, return false from the NMI handler to
> indicate that the NMI is not a watchdog tick and let the other handlers
> handle it.  This allows externally injected NMIs to reliably crash the
> host rather than be swallowed by the watchdog handler.

If a crash kernel has been setup via kexec, does this change to
"crash host" ends up jumping into the crash kernel?

     -Don Slutz