Return-Path: <linux-kernel-owner+w=401wt.eu-S1759986AbYHIBMX@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1759986AbYHIBMX (ORCPT <rfc822;w@1wt.eu>);
	Fri, 8 Aug 2008 21:12:23 -0400
Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752625AbYHIBMP
	(ORCPT <rfc822;linux-kernel-outgoing>);
	Fri, 8 Aug 2008 21:12:15 -0400
Received: from one.firstfloor.org ([213.235.205.2]:44950 "EHLO
	one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1752484AbYHIBMO (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Fri, 8 Aug 2008 21:12:14 -0400
Date: Sat, 9 Aug 2008 03:13:05 +0200
From: Andi Kleen <andi@firstfloor.org>
To: Roland McGrath <roland@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>, Andi Kleen <andi@firstfloor.org>,
       Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>,
       LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>,
       Thomas Gleixner <tglx@linutronix.de>,
       Peter Zijlstra <peterz@infradead.org>,
       Andrew Morton <akpm@linux-foundation.org>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       David Miller <davem@davemloft.net>, Ulrich Drepper <drepper@redhat.com>,
       Rusty Russell <rusty@rustcorp.com.au>,
       Jeremy Fitzhardinge <jeremy@goop.org>,
       Gregory Haskins <ghaskins@novell.com>,
       Arnaldo Carvalho de Melo <acme@redhat.com>,
       "Luis Claudio R. Goncalves" <lclaudio@uudg.org>,
       Clark Williams <williams@redhat.com>
Subject: Re: [PATCH 0/5] ftrace: to kill a daemon
Message-ID: <20080809011305.GD9038@one.firstfloor.org>
References: <alpine.DEB.1.10.0808081334010.4436@gandalf.stny.rr.com> <20080808174607.GG8244@Krystal> <alpine.DEB.1.10.0808081410380.6116@gandalf.stny.rr.com> <20080808182104.GA11376@Krystal> <alpine.DEB.1.10.0808081432400.8922@gandalf.stny.rr.com> <20080808190506.GD11376@Krystal> <alpine.DEB.1.10.0808081750590.16691@gandalf.stny.rr.com> <87tzdv2g05.fsf@basil.nowhere.org> <alpine.DEB.1.10.0808082030500.1396@gandalf.stny.rr.com> <20080809005326.E799F154208@magilla.localdomain>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20080809005326.E799F154208@magilla.localdomain>
User-Agent: Mutt/1.4.2.1i
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 633
Lines: 17

On Fri, Aug 08, 2008 at 05:53:26PM -0700, Roland McGrath wrote:
> Are we sure there aren't some good available 5-byte nops?
> 
> e.g. for 64-bit maybe 3e 48 8d 76 00
>      for 32-bit maybe 3e 8d 74 26 00
> 
> Have the chip folks confirmed that exactly the set we have in
> asm-x86/nops.h are the only optimal ones?

They were based on the respective optimization manuals, so yes.

-Andi
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/