From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752407Ab2FRLps (ORCPT ); Mon, 18 Jun 2012 07:45:48 -0400 Received: from mail-bk0-f46.google.com ([209.85.214.46]:40673 "EHLO mail-bk0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751052Ab2FRLpq (ORCPT ); Mon, 18 Jun 2012 07:45:46 -0400 Message-ID: <4FDF14E5.8080003@monstr.eu> Date: Mon, 18 Jun 2012 13:45:41 +0200 From: Michal Simek Reply-To: monstr@monstr.eu User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:12.0) Gecko/20120430 Thunderbird/12.0.1 MIME-Version: 1.0 To: Russell King - ARM Linux CC: linux-kernel@vger.kernel.org, Marc Zyngier , Grant Likely , Will Deacon , Rob Herring , Nicolas Pitre , linux-arm-kernel@lists.infradead.org, Ohad Ben-Cohen , Peter Crosthwaite Subject: Re: [RFC PATCH 8/8] ARM: vmlinux.lds: Setup correct entry point to physical address References: <1340019011-18642-1-git-send-email-monstr@monstr.eu> <1340019011-18642-9-git-send-email-monstr@monstr.eu> <20120618113716.GG12029@n2100.arm.linux.org.uk> In-Reply-To: <20120618113716.GG12029@n2100.arm.linux.org.uk> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/18/2012 01:37 PM, Russell King - ARM Linux wrote: > On Mon, Jun 18, 2012 at 01:30:11PM +0200, Michal Simek wrote: >> linker script setups entry point to virtual address. >> >> Signed-off-by: Michal Simek >> >> --- >> Not sure what is the reason to setup entry point to virtual address. >> --- >> arch/arm/kernel/vmlinux.lds.S | 4 +++- >> 1 files changed, 3 insertions(+), 1 deletions(-) >> >> diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S >> index b996bc0..de43b01 100644 >> --- a/arch/arm/kernel/vmlinux.lds.S >> +++ b/arch/arm/kernel/vmlinux.lds.S >> @@ -39,7 +39,7 @@ >> #endif >> >> OUTPUT_ARCH(arm) >> -ENTRY(stext) >> +ENTRY(arm_start) > > stext etc better stay as the virtual address through this change. The > kernel makes use of all stext/etext etc symbols as virtual addresses. I am not changing stext to physical address. Just elf entry point. What's it reason to have entry point in virtual address space? Thanks, Michal -- Michal Simek, Ing. (M.Eng) w: www.monstr.eu p: +42-0-721842854 Maintainer of Linux kernel 2.6 Microblaze Linux - http://www.monstr.eu/fdt/ Microblaze U-BOOT custodian From mboxrd@z Thu Jan 1 00:00:00 1970 From: monstr@monstr.eu (Michal Simek) Date: Mon, 18 Jun 2012 13:45:41 +0200 Subject: [RFC PATCH 8/8] ARM: vmlinux.lds: Setup correct entry point to physical address In-Reply-To: <20120618113716.GG12029@n2100.arm.linux.org.uk> References: <1340019011-18642-1-git-send-email-monstr@monstr.eu> <1340019011-18642-9-git-send-email-monstr@monstr.eu> <20120618113716.GG12029@n2100.arm.linux.org.uk> Message-ID: <4FDF14E5.8080003@monstr.eu> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 06/18/2012 01:37 PM, Russell King - ARM Linux wrote: > On Mon, Jun 18, 2012 at 01:30:11PM +0200, Michal Simek wrote: >> linker script setups entry point to virtual address. >> >> Signed-off-by: Michal Simek >> >> --- >> Not sure what is the reason to setup entry point to virtual address. >> --- >> arch/arm/kernel/vmlinux.lds.S | 4 +++- >> 1 files changed, 3 insertions(+), 1 deletions(-) >> >> diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S >> index b996bc0..de43b01 100644 >> --- a/arch/arm/kernel/vmlinux.lds.S >> +++ b/arch/arm/kernel/vmlinux.lds.S >> @@ -39,7 +39,7 @@ >> #endif >> >> OUTPUT_ARCH(arm) >> -ENTRY(stext) >> +ENTRY(arm_start) > > stext etc better stay as the virtual address through this change. The > kernel makes use of all stext/etext etc symbols as virtual addresses. I am not changing stext to physical address. Just elf entry point. What's it reason to have entry point in virtual address space? Thanks, Michal -- Michal Simek, Ing. (M.Eng) w: www.monstr.eu p: +42-0-721842854 Maintainer of Linux kernel 2.6 Microblaze Linux - http://www.monstr.eu/fdt/ Microblaze U-BOOT custodian