Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262351AbVBBOeB (ORCPT ); Wed, 2 Feb 2005 09:34:01 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262395AbVBBOeA (ORCPT ); Wed, 2 Feb 2005 09:34:00 -0500 Received: from ebiederm.dsl.xmission.com ([166.70.28.69]:64492 "EHLO ebiederm.dsl.xmission.com") by vger.kernel.org with ESMTP id S262382AbVBBOdw (ORCPT ); Wed, 2 Feb 2005 09:33:52 -0500 To: Koichi Suzuki Cc: Vivek Goyal , Andrew Morton , fastboot , lkml , Maneesh Soni , Hariprasad Nellitheertha , suparna bhattacharya Subject: Re: [Fastboot] [PATCH] Reserving backup region for kexec based crashdumps. References: <1106294155.26219.26.camel@2fwv946.in.ibm.com> <1106305073.26219.46.camel@2fwv946.in.ibm.com> <1106475280.26219.125.camel@2fwv946.in.ibm.com> <1106833527.15652.146.camel@2fwv946.in.ibm.com> <41FF381B.4080904@intellilink.co.jp> <42009874.7000209@intellilink.co.jp> From: ebiederm@xmission.com (Eric W. Biederman) Date: 02 Feb 2005 07:31:52 -0700 In-Reply-To: <42009874.7000209@intellilink.co.jp> Message-ID: User-Agent: Gnus/5.0808 (Gnus v5.8.8) Emacs/21.2 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 988 Lines: 17 Koichi Suzuki writes: > I meant with kexec and dump hook, there could be many more things can be done in > addition to full core dump. Initiating failover to other node will be one > example. Starting with this hook, there must be many good ideas. So my idea > is to make this hook general purpose, not for specific core dump tool. Again that is what is has been implemented. A fully stand alone executable that lives in an independent and reserved address in memory is jumped to. The goal in the generic kernel is to keep the code path to do that as small and as simple as possible to reduce the chances of it being mis-implemented, or the chances of attempting to use corrupted kernel functionality. Eric - 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/