Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762876AbXFRNPr (ORCPT ); Mon, 18 Jun 2007 09:15:47 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751984AbXFRNPk (ORCPT ); Mon, 18 Jun 2007 09:15:40 -0400 Received: from mu-out-0910.google.com ([209.85.134.185]:6011 "EHLO mu-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751977AbXFRNPj (ORCPT ); Mon, 18 Jun 2007 09:15:39 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=O5uzY4Od2qscDDit2FI5wgegLHaPScdPm5PQNsA9YqPdm9Y9/D+WNB3Us3Q2LXwgZNqKyDInyw2s6bGYJ23mlBLoYYFVLJQTVP7VthOdDBTo8hNCdOikS3s3m6lr+xLU9iLQ9i5ZTYIffOiHu+leGbQ2jIj/yAl/+shrcHkF+cw= Message-ID: <625fc13d0706180615t2f327b16rf648b2ee56da6ed9@mail.gmail.com> Date: Mon, 18 Jun 2007 08:15:37 -0500 From: "Josh Boyer" To: "Roland McGrath" Subject: Re: [RFC] [PATCH] selective signal ptracing Cc: "Benjamin Herrenschmidt" , "Alan Cox" , john.blackwood@ccur.com, linux-kernel@vger.kernel.org, "Sven-Thorsten Dietrich" , bugsy@ccur.com In-Reply-To: <20070617012952.09F2D4D059F@magilla.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <1182039062.26853.111.camel@localhost.localdomain> <20070617012952.09F2D4D059F@magilla.localdomain> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 956 Lines: 20 On 6/16/07, Roland McGrath wrote: > > What are the issues with arch like ARM ? > > The interesting class ARM belongs to is machines that don't (or don't > always) have hardware support for single-step. Maintaining the status quo > of how PTRACE_SINGLESTEP functions on these machines is different in > implementation under utrace than it is for machines that always use > hardware support. That is the only special complication for ARM, and it is > not really very complicated. Apparently the way I described the issue in > the past was easily misunderstood. That isn't just ARM. There are some embedded PowerPC chips that lack an easily usable hardware single step. Just an FYI. josh - 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/