Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756863AbYGRLYn (ORCPT ); Fri, 18 Jul 2008 07:24:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752424AbYGRLYg (ORCPT ); Fri, 18 Jul 2008 07:24:36 -0400 Received: from smtp-out01.alice-dsl.net ([88.44.60.11]:46448 "EHLO smtp-out01.alice-dsl.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751873AbYGRLYg (ORCPT ); Fri, 18 Jul 2008 07:24:36 -0400 To: David Miller Cc: roland@redhat.com, akpm@linux-foundation.org, torvalds@linux-foundation.org, mingo@elte.hu, linux-kernel@vger.kernel.org Subject: Re: [PATCH 00/23] tracehook From: Andi Kleen References: <20080717072541.F390E15411D@magilla.localdomain> <20080718.022035.208722773.davem@davemloft.net> Date: Fri, 18 Jul 2008 13:24:33 +0200 In-Reply-To: <20080718.022035.208722773.davem@davemloft.net> (David Miller's message of "Fri, 18 Jul 2008 02:20:35 -0700 (PDT)") Message-ID: <87vdz3qvta.fsf@basil.nowhere.org> User-Agent: Gnus/5.1008 (Gnus v5.10.8) Emacs/21.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-OriginalArrivalTime: 18 Jul 2008 11:24:31.0663 (UTC) FILETIME=[D9496BF0:01C8E8C8] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 742 Lines: 18 David Miller writes: > > The other arch's with compat support will have this same exact issue. On x86-64 the sign extension is in C code, so it would be somewhat more complicated to do a generic table or converter. I think the tracer will always need to know if it's tracing 32bit or 64bit though, because the interfaces are not always 100% compatible. e.g. I suspect any serious one will need to look at memory arguments for some cases and those generally differ. -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/