Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1946720AbWKJQD3 (ORCPT ); Fri, 10 Nov 2006 11:03:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1946721AbWKJQD2 (ORCPT ); Fri, 10 Nov 2006 11:03:28 -0500 Received: from mx1.redhat.com ([66.187.233.31]:53904 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S1946720AbWKJQD2 (ORCPT ); Fri, 10 Nov 2006 11:03:28 -0500 Message-ID: <4554A2F9.37B0023E@redhat.com> Date: Fri, 10 Nov 2006 11:04:09 -0500 From: Dave Anderson X-Mailer: Mozilla 4.78 [en] (X11; U; Linux 2.4.9-e.57enterprise i686) X-Accept-Language: en MIME-Version: 1.0 To: Magnus Damm CC: vgoyal@in.ibm.com, "Eric W. Biederman" , Magnus Damm , linux-kernel@vger.kernel.org, Andi Kleen , fastboot@lists.osdl.org, Horms Subject: Re: [PATCH 02/02] Elf: Align elf notes properly References: <20061102101942.452.73192.sendpatchset@localhost> <20061102101949.452.23441.sendpatchset@localhost> <20061110144922.GA8155@in.ibm.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1355 Lines: 36 > > > >Therefore we use 4 byte alignment unless it can be shown that the > > >linux core dumps are a fluke and should be fixed. > > > > Ok. Vivek, Dave, anyone? Comments? > > > > IMHO, I think we should go by the specs (8byte boundary alignment on 64bit > platforms) until and unless it can be proven that specs are wrong. This > probably will mean that we will break things for sometime (until and unless > it is fixed in tool chain and probably will also break the capability to use > an older kernel for capturing dump). But that's unavoidable if we want to be > compliant to specs. > > Thanks > Vivek IMHO, why break things if it's not necessary? As I understand it, you can still take the course of least resistance and implement 64-bit xen/kdump vmcores with 4-byte alignment -- and everybody's happy, right? Unlike other tools that could potentially be broken, the crash utility will have to maintain backwards compatibility for all the other 4-byte aligned 64-bit vmcores out there. So to me, it's more a PITA than anything else, and I'll just adapt it to whatever's out there... Thanks, Dave - 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/