From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758875AbZEFJ5n (ORCPT ); Wed, 6 May 2009 05:57:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752981AbZEFJ5e (ORCPT ); Wed, 6 May 2009 05:57:34 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:41877 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752710AbZEFJ5d (ORCPT ); Wed, 6 May 2009 05:57:33 -0400 Date: Wed, 6 May 2009 11:56:29 +0200 From: Ingo Molnar To: Alexey Dobriyan , Roland McGrath , Oleg Nesterov Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, containers@lists.linux-foundation.org Subject: Re: [PATCH] x86: ptrace debugreg checks rewrite Message-ID: <20090506095629.GC15323@elte.hu> References: <20090504001601.GL16631@x200.localdomain> <20090504002431.GA17556@x200.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090504002431.GA17556@x200.localdomain> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0001] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Alexey Dobriyan wrote: > On Mon, May 04, 2009 at 04:16:01AM +0400, Alexey Dobriyan wrote: > > +static int ptrace_check_debugreg(int _32bit, > > + unsigned long dr0, unsigned long dr1, > > + unsigned long dr2, unsigned long dr3, > > + unsigned long dr6, unsigned long dr7) > > +{ > > + /* Breakpoint type: 00: --x, 01: -w-, 10: undefined, 11: rw- */ > > + unsigned int rw[4]; > > + /* Breakpoint length: 00: 1 byte, 01: 2 bytes, 10: 8 bytes, 11: bytes */ > 4 bytes, of course Roland, Oleg, do you have any pending/planned changes in this area? Ingo