From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754405Ab2JEIpX (ORCPT ); Fri, 5 Oct 2012 04:45:23 -0400 Received: from caramon.arm.linux.org.uk ([78.32.30.218]:46539 "EHLO caramon.arm.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752666Ab2JEIpU (ORCPT ); Fri, 5 Oct 2012 04:45:20 -0400 Date: Fri, 5 Oct 2012 09:45:00 +0100 From: Russell King - ARM Linux To: Jason Gunthorpe Cc: Dave Martin , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH] [ARM] Use AT() in the linker script to create correct program headers Message-ID: <20121005084500.GI4625@n2100.arm.linux.org.uk> References: <20120930232116.GC30637@obsidianresearch.com> <20121001153952.GB2100@linaro.org> <20121001160639.GA31620@obsidianresearch.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20121001160639.GA31620@obsidianresearch.com> User-Agent: Mutt/1.5.19 (2009-01-05) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Oct 01, 2012 at 10:06:39AM -0600, Jason Gunthorpe wrote: > On Mon, Oct 01, 2012 at 04:39:53PM +0100, Dave Martin wrote: > > > Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align > > > LOAD 0x008000 0xc0008000 0x00008000 0x372244 0x3a4310 RWE 0x8000 > > > > Not related directly to your patch, but I wonder why we don't we see > > separate r-x and rw- segments? > > I think this is because the sections are not aligned when the > protections change, and the sections are not sorted by protection > type. They aren't sorted by protection type, they're ordered according to what's required for the kernel - which is to have the init sections together as one complete block so that it can be freed, and to place all of the kernel text as close to the beginning of the image as possible.