From: Don Slutz <dslutz@verizon.com>
To: Ross Lagerwall <ross.lagerwall@citrix.com>,
Xen-devel <xen-devel@lists.xen.org>
Cc: Keir Fraser <keir@xen.org>, Jan Beulich <jbeulich@suse.com>
Subject: Re: [PATCH] x86/nmi: Make external NMI injection reliably crash the host
Date: Tue, 26 Aug 2014 12:06:27 -0400 [thread overview]
Message-ID: <53FCB083.2050603@terremark.com> (raw)
In-Reply-To: <1409047805-17893-1-git-send-email-ross.lagerwall@citrix.com>
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
next prev parent reply other threads:[~2014-08-26 16:06 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-26 10:10 [PATCH] x86/nmi: Make external NMI injection reliably crash the host Ross Lagerwall
2014-08-26 10:17 ` Andrew Cooper
2014-08-26 12:59 ` Jan Beulich
2014-08-26 15:26 ` Ross Lagerwall
2014-08-26 15:38 ` Jan Beulich
2014-08-27 11:14 ` Ross Lagerwall
2014-08-27 12:04 ` Jan Beulich
2014-08-26 16:06 ` Don Slutz [this message]
2014-08-26 16:51 ` Andrew Cooper
2014-08-26 21:51 ` Don Slutz
2014-08-26 23:01 ` Andrew Cooper
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