From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S933439Ab1JNURy (ORCPT <rfc822;w@1wt.eu>);
	Fri, 14 Oct 2011 16:17:54 -0400
Received: from caramon.arm.linux.org.uk ([78.32.30.218]:57904 "EHLO
	caramon.arm.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S933330Ab1JNURw (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Fri, 14 Oct 2011 16:17:52 -0400
Date: Fri, 14 Oct 2011 21:17:37 +0100
From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Nicolas Pitre <nico@fluxnic.net>
Cc: Arnd Bergmann <arnd@arndb.de>, Stephen Warren <swarren@nvidia.com>,
        Olof Johansson <olof@lixom.net>,
        Peter De Schrijver <pdeschrijver@nvidia.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
        "linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
        "Colin Cross (ccross@android.com)" <ccross@android.com>,
        Erik Gilling <konkers@android.com>
Subject: Re: [PATCH] arm/tegra: select AUTO_ZRELADDR by default
Message-ID: <20111014201737.GW21648@n2100.arm.linux.org.uk>
References: <1317172068-14872-1-git-send-email-pdeschrijver@nvidia.com> <201110141729.41515.arnd@arndb.de> <74CDBE0F657A3D45AFBB94109FB122FF173BE1A283@HQMAIL01.nvidia.com> <201110141827.53906.arnd@arndb.de> <alpine.LFD.2.02.1110141353390.17040@xanadu.home> <20111014192057.GT21648@n2100.arm.linux.org.uk> <alpine.LFD.2.02.1110141609510.17040@xanadu.home>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <alpine.LFD.2.02.1110141609510.17040@xanadu.home>
User-Agent: Mutt/1.5.19 (2009-01-05)
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Fri, Oct 14, 2011 at 04:14:12PM -0400, Nicolas Pitre wrote:
> On Fri, 14 Oct 2011, Russell King - ARM Linux wrote:
> 
> > On Fri, Oct 14, 2011 at 02:01:07PM -0400, Nicolas Pitre wrote:
> > > The way I'm restructuring things around this is that AUTO_ZRELADDR will 
> > > always be active by default, just like ARM_PATCH_PHYS_VIRT now.  This 
> > > platform specific exclusion thinking is a step backward so I'd prefer if 
> > > people would refrain from going there for the moment.
> > 
> > Are you expecting everyone to change the way they load the zImage
> > overnight then?
> 
> No, of course.  But adding restrictions in the kernel build because 
> u-Boot's own image format dictates such restrictions doesn't make sense.  
> Those restrictions must be pushed towards the uImage encapsulation step, 
> not higher the kernel config hierarchy.

You're not understanding again.

I'm talking about people who _explicitly_ load the zImage at a different
address to which the decompressed image ends up.  With AUTO_ZRELADDR=y
their setup will break unless they stop that behaviour, which takes
away one of the advantages of using the zImage format.