Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754603Ab3DNDH0 (ORCPT ); Sat, 13 Apr 2013 23:07:26 -0400 Received: from terminus.zytor.com ([198.137.202.10]:44120 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754305Ab3DNDHY (ORCPT ); Sat, 13 Apr 2013 23:07:24 -0400 Message-ID: <516A1D49.1050100@zytor.com> Date: Sat, 13 Apr 2013 20:06:49 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130311 Thunderbird/17.0.4 MIME-Version: 1.0 To: Yinghai Lu CC: Kees Cook , Linux Kernel Mailing List , kernel-hardening@lists.openwall.com, Thomas Gleixner , Ingo Molnar , the arch/x86 maintainers , Jarkko Sakkinen , Matthew Garrett , Matt Fleming , Eric Northup , Dan Rosenberg , Julien Tinnes , Will Drewry Subject: Re: [PATCH 6/6] x86: kaslr: relocate base offset at boot References: <1365797627-20874-1-git-send-email-keescook@chromium.org> <1365797627-20874-7-git-send-email-keescook@chromium.org> In-Reply-To: X-Enigmail-Version: 1.5.1 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 801 Lines: 26 On 04/13/2013 05:37 PM, Yinghai Lu wrote: > > so decompress code position is changed? > > You may push out bss and other data area of run-time kernel of limit > that boot loader > chose according to setup_header.init_size. > aka that make those area overlap with ram hole or other area like > boot command line or initrd.... > Is there a strong reason to randomize the physical address on 64 bits (and if so, shouldn't we do it right?) -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf. -- 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/