From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from terminus.zytor.com ([198.137.202.10]:44441 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754839Ab3AaVw2 (ORCPT ); Thu, 31 Jan 2013 16:52:28 -0500 Message-ID: <510AE6BF.4080303@zytor.com> Date: Thu, 31 Jan 2013 13:48:47 -0800 From: "H. Peter Anvin" MIME-Version: 1.0 Subject: Re: [RFC PATCH 0/4] Add support for LZ4-compressed kernels References: <1359179447-31118-1-git-send-email-kyungsik.lee@lge.com> <20130128142510.68092e10.akpm@linux-foundation.org> <20130129101549.GP23505@n2100.arm.linux.org.uk> <51089523.3080804@zytor.com> In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kbuild-owner@vger.kernel.org List-ID: To: Nicolas Pitre Cc: Russell King - ARM Linux , Michal Marek , hyojun.im@lge.com, raphael.andy.lee@gmail.com, linux-kbuild@vger.kernel.org, gunho.lee@lge.com, namhyung.kim@lge.com, x86@kernel.org, minchan.kim@lge.com, linux-kernel@vger.kernel.org, Josh Triplett , Nitin Gupta , Richard Purdie , Ingo Molnar , Joe Millenbach , chan.jeong@lge.com, Kyungsik Lee , Andrew Morton , Albin Tonnerre , CE Linux Developers List , Thomas Gleixner , linux-arm-kernel@lists.infradead.org On 01/30/2013 10:33 AM, Nicolas Pitre wrote: >> >> The only concern I have with that is if someone paints themselves into a >> corner and absolutely wants, say, LZO. > > That would be hard to justify given that the kernel provides its own > decompressor code, making the compression format transparent to > bootloaders, etc. And no one should be poking into the compressed > zImage. > Some utterly weird things like the Xen domain builder do that, because they have to. That is why we explicitly document that the payload is ELF and how to access it in the bzImage spec. -hpa