Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752042AbWHNT5d (ORCPT ); Mon, 14 Aug 2006 15:57:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752062AbWHNT5d (ORCPT ); Mon, 14 Aug 2006 15:57:33 -0400 Received: from e3.ny.us.ibm.com ([32.97.182.143]:58852 "EHLO e3.ny.us.ibm.com") by vger.kernel.org with ESMTP id S1752042AbWHNT5c (ORCPT ); Mon, 14 Aug 2006 15:57:32 -0400 Date: Mon, 14 Aug 2006 15:57:01 -0400 From: Vivek Goyal To: "H. Peter Anvin" Cc: "Eric W. Biederman" , Don Zickus , fastboot@osdl.org, Horms , Jan Kratochvil , Magnus Damm , linux-kernel@vger.kernel.org Subject: Re: [Fastboot] [CFT] ELF Relocatable x86 and x86_64 bzImages Message-ID: <20060814195701.GD2519@in.ibm.com> Reply-To: vgoyal@in.ibm.com References: <20060810131323.GB9888@in.ibm.com> <20060810181825.GD14732@in.ibm.com> <20060814165150.GA2519@in.ibm.com> <44E0AD1D.1040408@zytor.com> <20060814181118.GB2519@in.ibm.com> <44E0CFD0.3060506@zytor.com> <20060814194252.GC2519@in.ibm.com> <44E0D2DB.7030003@zytor.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <44E0D2DB.7030003@zytor.com> User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1137 Lines: 29 On Mon, Aug 14, 2006 at 12:45:31PM -0700, H. Peter Anvin wrote: > Vivek Goyal wrote: > >>> > >>What about once the kernel is booted? > > > >Sorry did not understand the question. Few more lines will help. > > > > Is this field intended to protect any kind of memory during the early > boot phase of the kernel proper, or only the decompressor? > I think it should protect against any dynamic memory usage during early boot phase too till we reach a point where kernel is aware of BIOS provided memory maps and kernel memory area usage can be controlled with the help of BIOS provided/User defined memory maps. In i386 implementation Eric is alredy taking into account the memory used by bootmem bitmap and initial page tables. I have not looked into x86_64 kernel code whether do I need to make such adjustments. It worked for me so did not bother much. I will look into it. Thanks Vivek - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/