From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758262AbXHESuI (ORCPT ); Sun, 5 Aug 2007 14:50:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752024AbXHESt4 (ORCPT ); Sun, 5 Aug 2007 14:49:56 -0400 Received: from gprs189-60.eurotel.cz ([160.218.189.60]:44073 "EHLO amd.ucw.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751918AbXHEStz (ORCPT ); Sun, 5 Aug 2007 14:49:55 -0400 Date: Sun, 5 Aug 2007 20:50:08 +0200 From: Pavel Machek To: "Huang, Ying" Cc: "Eric W. Biederman" , nigel@nigel.suspend2.net, "Rafael J. Wysocki" , Jeremy Maitin-Shepard , Alan Stern , Andrew Morton , david@lang.hm, linux-kernel@vger.kernel.org, linux-pm@lists.linux-foundation.org, Kexec Mailing List Subject: Re: [PATH 1/1] Kexec jump - v2 - kexec jump Message-ID: <20070805185008.GD1758@elf.ucw.cz> References: <1184483639.1898.99.camel@caritas-dev.intel.com> <20070731095101.GA1774@elf.ucw.cz> <1185954978.1363.23.camel@caritas-dev.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1185954978.1363.23.camel@caritas-dev.intel.com> X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.11+cvs20060126 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi! > > > This patch implement the functionality of jumping from kexeced kernel > > > to original kernel. > > > > > > A new reboot command named LINUX_REBOOT_CMD_KJUMP is defined to > > > trigger the jumping to (executing) the new kernel or jumping back to > > > the original kernel. > > > > Could we get two reboot commands? Exec loaded kernel seems to be quite > > different operation than "jump back". > > Exec loaded kernel for jumping back is also different from exec loaded > kernel normally. > > Maybe the two reboot operations in kexec jump can be seen as "jump to" > and "jump back"? Yes, that would be better. > Document will be added in next version too. > > This parameter is used for kernel-to-kernel communication. But now, it > must be setup by user, as in usage guide. Thanks for your help :-). Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html