From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AD17AC0650F for ; Mon, 5 Aug 2019 16:32:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 771CD2086D for ; Mon, 5 Aug 2019 16:32:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alien8.de header.i=@alien8.de header.b="YwSydi+q" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729691AbfHEQcJ (ORCPT ); Mon, 5 Aug 2019 12:32:09 -0400 Received: from mail.skyhub.de ([5.9.137.197]:39300 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726620AbfHEQcJ (ORCPT ); Mon, 5 Aug 2019 12:32:09 -0400 Received: from zn.tnic (p200300EC2F065B00683A29B48F14DC99.dip0.t-ipconnect.de [IPv6:2003:ec:2f06:5b00:683a:29b4:8f14:dc99]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id A405F1EC0C31; Mon, 5 Aug 2019 18:32:07 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1565022728; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=g+cTmbSEFfoz2KUZz+uvRnfYrlj//AwDFvYHV2OvsKQ=; b=YwSydi+q2UAgpz8CC6RgebD3zV7GEPqVPv5pRN0M6jox/WccOZt9CR/6wdUcBGgHFie+wH jGJIrKZSCnOA/4dXXVZ8d+KRrEUpIJO9cO/h4qAWyis7lZ28NvwoVi/AS9506pyVZldV3P 1Z2Jbc3INpkKJPe/0i3ikL9HuH4XOog= Date: Mon, 5 Aug 2019 18:32:02 +0200 From: Borislav Petkov To: Thomas Garnier Cc: kernel-hardening@lists.openwall.com, kristen@linux.intel.com, keescook@chromium.org, Herbert Xu , "David S. Miller" , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v9 01/11] x86/crypto: Adapt assembly for PIE support Message-ID: <20190805163202.GD18785@zn.tnic> References: <20190730191303.206365-1-thgarnie@chromium.org> <20190730191303.206365-2-thgarnie@chromium.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20190730191303.206365-2-thgarnie@chromium.org> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 30, 2019 at 12:12:45PM -0700, Thomas Garnier wrote: > Change the assembly code to use only relative references of symbols for the > kernel to be PIE compatible. > > Position Independent Executable (PIE) support will allow to extend the > KASLR randomization range below 0xffffffff80000000. I believe in previous reviews I asked about why this sentence is being replicated in every commit message and now it is still in every commit message except in 2/11. Why do you need it everywhere and not once in the 0th mail? -- Regards/Gruss, Boris. Good mailing practices for 400: avoid top-posting and trim the reply.