From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932218AbcGOItr (ORCPT ); Fri, 15 Jul 2016 04:49:47 -0400 Received: from pandora.armlinux.org.uk ([78.32.30.218]:57594 "EHLO pandora.armlinux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932194AbcGOItn (ORCPT ); Fri, 15 Jul 2016 04:49:43 -0400 Date: Fri, 15 Jul 2016 09:49:25 +0100 From: Russell King - ARM Linux To: Arnd Bergmann Cc: Mark Rutland , bhe@redhat.com, linuxppc-dev@lists.ozlabs.org, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, Vivek Goyal , AKASHI Takahiro , "Eric W. Biederman" , bauerman@linux.vnet.ibm.com, Dave Young , linux-arm-kernel@lists.infradead.org Subject: Re: [RFC 0/3] extend kexec_file_load system call Message-ID: <20160715084925.GD1041@n2100.armlinux.org.uk> References: <20160712014201.11456-1-takahiro.akashi@linaro.org> <5352106.oQ0Ff9gWJA@wuerfel> <20160713094127.GC14522@leverpostej> <7352796.seiSnHrYPy@wuerfel> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <7352796.seiSnHrYPy@wuerfel> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jul 13, 2016 at 03:13:42PM +0200, Arnd Bergmann wrote: > On Wednesday, July 13, 2016 10:41:28 AM CEST Mark Rutland wrote: > > The big question is whether this is a realistic case on a secure boot > > system. > > What does x86 do here? I assume changes to the command line are also > limited. They aren't. You can specify /anything/ even with a fully-signed kernel and initrd, which was one of the things I pointed out in my previous set of responses. -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net.