From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268098AbUHTO33 (ORCPT ); Fri, 20 Aug 2004 10:29:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268115AbUHTO33 (ORCPT ); Fri, 20 Aug 2004 10:29:29 -0400 Received: from pauli.thundrix.ch ([213.239.201.101]:26527 "EHLO pauli.thundrix.ch") by vger.kernel.org with ESMTP id S268098AbUHTO3M (ORCPT ); Fri, 20 Aug 2004 10:29:12 -0400 Date: Fri, 20 Aug 2004 16:28:40 +0200 From: Tonnerre To: Itsuro Oda Cc: linux-kernel@vger.kernel.org Subject: Re: [RFC]Kexec based crash dumping Message-ID: <20040820142840.GD16660@thundrix.ch> References: <20040819083333.76F4.ODA@valinux.co.jp> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="gE7i1rD7pdK0Ng3j" Content-Disposition: inline In-Reply-To: <20040819083333.76F4.ODA@valinux.co.jp> X-GPG-KeyID: 0x8BE1C38D X-GPG-Fingerprint: 1AB0 9AD6 D0C8 B9D5 C5C9 9C2A FF86 CBEE 8BE1 C38D X-GPG-KeyURL: http://users.thundrix.ch/~tonnerre/tonnerre.asc User-Agent: Mutt/1.5.6+20040803i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --gE7i1rD7pdK0Ng3j Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Salut, On Thu, Aug 19, 2004 at 08:45:00AM +0900, Itsuro Oda wrote: > - prepare a kernel which does only dump real memory to block > device. ("dump mini kernel") > - pre-allocate the memory (4MB is enough) used by the dump mini > kernel and pre-load the dump mini kernel. > - when crash occur exec the dump mini kernel. > - the dump mini kernel stands in and only uses pre-allocated > area. One question, what happens in your concept when some stubborn zombie kernel driver (say Nvidia) comes along and overwrites random memory areas? Will the booting of the dump kernel simply fail? Tonnerre --gE7i1rD7pdK0Ng3j Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.9.2 (GNU/Linux) iD8DBQFBJgqX/4bL7ovhw40RAjFpAJ4iCPr6Mb2NtfxWT9ntbbdTP++shgCgsOdT hfV/3Z150rk3xjokx9aUgUM= =2EI4 -----END PGP SIGNATURE----- --gE7i1rD7pdK0Ng3j--