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 6B01AC43603 for ; Wed, 18 Dec 2019 12:46:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 42174227BF for ; Wed, 18 Dec 2019 12:46:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alien8.de header.i=@alien8.de header.b="CObDVqos" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726710AbfLRMqP (ORCPT ); Wed, 18 Dec 2019 07:46:15 -0500 Received: from mail.skyhub.de ([5.9.137.197]:38718 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726743AbfLRMqP (ORCPT ); Wed, 18 Dec 2019 07:46:15 -0500 Received: from zn.tnic (p200300EC2F0B8B004C237F05E7CC242C.dip0.t-ipconnect.de [IPv6:2003:ec:2f0b:8b00:4c23:7f05:e7cc:242c]) (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 DA5171EC09F1; Wed, 18 Dec 2019 13:46:09 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1576673170; 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=yXwLnW+PoY25pshD8Wq5cZaWHHz1WD1asE9i3LHbFgo=; b=CObDVqosp5y7Z8sELy68i2YofwvsnqQOrexIoHXuwx4iBrrN1Ec2LK/g2G2LFmAiahNTHg KIiIEFVVTQ/7/vwqbtJd3690sOFs622Qt+IGBBhv3TTl1kj/mGgkbqwxQazwVNQmuphqqd SBLhof85IDWs90nsRlzcY4JsHr0Bl6I= Date: Wed, 18 Dec 2019 13:46:04 +0100 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 v10 01/11] x86/crypto: Adapt assembly for PIE support Message-ID: <20191218124604.GE24886@zn.tnic> References: <20191205000957.112719-1-thgarnie@chromium.org> <20191205000957.112719-2-thgarnie@chromium.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20191205000957.112719-2-thgarnie@chromium.org> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org On Wed, Dec 04, 2019 at 04:09:38PM -0800, 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. FFS, how many times do we have to talk about this auto-sprinkled sentence?! https://lkml.kernel.org/r/20190805163202.GD18785@zn.tnic -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette