Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934008Ab3DOWiW (ORCPT ); Mon, 15 Apr 2013 18:38:22 -0400 Received: from mail-ie0-f180.google.com ([209.85.223.180]:33488 "EHLO mail-ie0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932513Ab3DOWiV (ORCPT ); Mon, 15 Apr 2013 18:38:21 -0400 MIME-Version: 1.0 In-Reply-To: References: <1365797627-20874-1-git-send-email-keescook@chromium.org> <1365797627-20874-7-git-send-email-keescook@chromium.org> <516A1D49.1050100@zytor.com> <516C702C.2030209@zytor.com> <516C751B.4020505@zytor.com> Date: Mon, 15 Apr 2013 15:38:20 -0700 X-Google-Sender-Auth: pRrD9v_ccX746JzTId1FIohj3dk Message-ID: Subject: Re: [PATCH 6/6] x86: kaslr: relocate base offset at boot From: Yinghai Lu To: Kees Cook Cc: "H. Peter Anvin" , Eric Northup , Linux Kernel Mailing List , "kernel-hardening@lists.openwall.com" , Thomas Gleixner , Ingo Molnar , "the arch/x86 maintainers" , Jarkko Sakkinen , Matthew Garrett , Matt Fleming , Dan Rosenberg , Julien Tinnes , Will Drewry Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 944 Lines: 22 On Mon, Apr 15, 2013 at 3:07 PM, Kees Cook wrote: > On Mon, Apr 15, 2013 at 3:00 PM, Yinghai Lu wrote: >> also do not overlap with boot_param, command_line, and initrd. >> >> and need to double check setup_header.init_size to make sure bss and >> etc will not >> fall into memory hole or reserved area in e820. >> >> also may need to setup page table for target position as bootloader may only >> has ident mapping only for loaded bzImage 64 areas. >> >> looks you are trying redo the work for bootloader to pick loaded phys addr. > > aslr.S's select_aslr_address uses z_extract_offset as the upper bound. > so the decompressed image is not moved high? -- 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/