From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754555AbZHFWmk (ORCPT ); Thu, 6 Aug 2009 18:42:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752015AbZHFWmk (ORCPT ); Thu, 6 Aug 2009 18:42:40 -0400 Received: from caramon.arm.linux.org.uk ([78.32.30.218]:60211 "EHLO caramon.arm.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751338AbZHFWmj (ORCPT ); Thu, 6 Aug 2009 18:42:39 -0400 Date: Thu, 6 Aug 2009 23:40:55 +0100 From: Russell King - ARM Linux To: Albin Tonnerre Cc: sam@ravnborg.org, hpa@zytor.com, alain@knaff.lu, linux-kernel@vger.kernel.org, linux-embedded@vger.kernel.org, akpm@linux-foundation.org Subject: Re: [PATCH 4/6] Add support for LZO-compressed kernels for ARM Message-ID: <20090806224055.GH31579@n2100.arm.linux.org.uk> References: <20090731093107.GA29704@merkur.ravnborg.org> <1249311501-23102-1-git-send-email-albin.tonnerre@free-electrons.com> <1249311501-23102-2-git-send-email-albin.tonnerre@free-electrons.com> <1249311501-23102-3-git-send-email-albin.tonnerre@free-electrons.com> <1249311501-23102-4-git-send-email-albin.tonnerre@free-electrons.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1249311501-23102-4-git-send-email-albin.tonnerre@free-electrons.com> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Aug 03, 2009 at 04:58:19PM +0200, Albin Tonnerre wrote: > This is the second part of patch. This part includes: > - changes to ach/arch/boot/Makefile to make it easier to add new > compression types > - new piggy.lzo.S necessary for lzo compression > - changes in arch/arm/boot/compressed/misc.c to allow the use of lzo or > gzip, depending on the config > - Kconfig support FYI, with these patches applied and selecting GZIP method, I get linker errors. I've been unable to track down what's going on, but it appears to be a libgcc issue. In spite of the decompressor being built as an EABI object, gcc seems to be issuing calls to __umodsi3, which isn't in the EABI libgcc (they're called something different - don't ask.) So I think these patches need further testing and evaluation on ARM before they can be merged. Moreover, I'd like to see some comparisons between the _current_ gzip method, the new gzip method and the lzo method on ARM. I was going to get those numbers, but the platform I was going to run the tests on has died on me today.