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Re: [PATCH -tip v10 0/9] kprobes: Kprobes jump optimization support
- From: Steven Rostedt <rostedt at goodmis dot org>
- To: Masami Hiramatsu <mhiramat at redhat dot com>
- Cc: Frederic Weisbecker <fweisbec at gmail dot com>, Ingo Molnar <mingo at elte dot hu>, Ananth N Mavinakayanahalli <ananth at in dot ibm dot com>, lkml <linux-kernel at vger dot kernel dot org>, Jim Keniston <jkenisto at us dot ibm dot com>, Srikar Dronamraju <srikar at linux dot vnet dot ibm dot com>, Christoph Hellwig <hch at infradead dot org>, "H. Peter Anvin" <hpa at zytor dot com>, Anders Kaseorg <andersk at ksplice dot com>, Tim Abbott <tabbott at ksplice dot com>, Andi Kleen <andi at firstfloor dot org>, Jason Baron <jbaron at redhat dot com>, Mathieu Desnoyers <compudj at krystal dot dyndns dot org>, systemtap <systemtap at sources dot redhat dot com>, DLE <dle-develop at lists dot sourceforge dot net>
- Date: Tue, 23 Feb 2010 12:07:14 -0500
- Subject: Re: [PATCH -tip v10 0/9] kprobes: Kprobes jump optimization support
- References: <20100218221247.19637.80088.stgit@dhcp-100-2-132.bos.redhat.com>
- Reply-to: rostedt at goodmis dot org
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