Subject: Re: [PATCH -tip v10 0/9] kprobes: Kprobes jump optimization support
From: Steven Rostedt <rostedt@goodmis.org>
Reply-To: rostedt@goodmis.org
To: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>, Ingo Molnar <mingo@elte.hu>,
       Ananth N Mavinakayanahalli <ananth@in.ibm.com>,
       lkml <linux-kernel@vger.kernel.org>, Jim Keniston <jkenisto@us.ibm.com>,
       Srikar Dronamraju <srikar@linux.vnet.ibm.com>,
       Christoph Hellwig <hch@infradead.org>, "H. Peter Anvin" <hpa@zytor.com>,
       Anders Kaseorg <andersk@ksplice.com>, Tim Abbott <tabbott@ksplice.com>,
       Andi Kleen <andi@firstfloor.org>, Jason Baron <jbaron@redhat.com>,
       Mathieu Desnoyers <compudj@krystal.dyndns.org>,
       systemtap <systemtap@sources.redhat.com>,
       DLE <dle-develop@lists.sourceforge.net>
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Organization: Kihon Technologies Inc.
Date: Tue, 23 Feb 2010 12:07:14 -0500
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On Thu, 2010-02-18 at 17:12 -0500, Masami Hiramatsu wrote:

> This version of patch series uses text_poke_smp() which
> update kernel text by stop_machine(). That is 'officially'
> supported on Intel's processors. text_poke_smp() can't
> be used for modifying NMI code,

But it can be made to use with NMI code. If you look at what I did to
allow ftrace to modify NMI code, it may be able to do the same thing.

-- Steve


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