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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,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 C3AB1C2D0A3 for ; Fri, 6 Nov 2020 18:32:27 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2D4712065E for ; Fri, 6 Nov 2020 18:32:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2D4712065E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 78BB16B0036; Fri, 6 Nov 2020 13:32:26 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 73BC36B005C; Fri, 6 Nov 2020 13:32:26 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 62A5D6B005D; Fri, 6 Nov 2020 13:32:26 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0151.hostedemail.com [216.40.44.151]) by kanga.kvack.org (Postfix) with ESMTP id 37AF26B0036 for ; Fri, 6 Nov 2020 13:32:26 -0500 (EST) Received: from smtpin14.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id C51D08249980 for ; Fri, 6 Nov 2020 18:32:25 +0000 (UTC) X-FDA: 77454838650.14.time92_4c137e6272d4 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin14.hostedemail.com (Postfix) with ESMTP id A3CC118229835 for ; Fri, 6 Nov 2020 18:32:25 +0000 (UTC) X-HE-Tag: time92_4c137e6272d4 X-Filterd-Recvd-Size: 3375 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by imf38.hostedemail.com (Postfix) with ESMTP for ; Fri, 6 Nov 2020 18:32:24 +0000 (UTC) IronPort-SDR: CET+Frl2OfY4U14pEVcIYOtoFMhMnBi7xFa8uonM5+hpz6AmtDahf/v6jnvzH6bYvgbD9mPBo1 V99D9pKqF0tA== X-IronPort-AV: E=McAfee;i="6000,8403,9797"; a="187512639" X-IronPort-AV: E=Sophos;i="5.77,457,1596524400"; d="scan'208";a="187512639" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Nov 2020 10:32:21 -0800 IronPort-SDR: QSmFF3Phay518UCkCcIx2W5ZdMDtxuhDzkXD52/pILlFfYCbVlk48QwvROMhAgEMgM9IDY1xVI h68Cyix7Os1w== X-IronPort-AV: E=Sophos;i="5.77,457,1596524400"; d="scan'208";a="321681117" Received: from yyu32-mobl1.amr.corp.intel.com (HELO [10.212.221.127]) ([10.212.221.127]) by orsmga003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Nov 2020 10:32:19 -0800 Subject: Re: [PATCH v14 01/26] Documentation/x86: Add CET description To: Borislav Petkov Cc: x86@kernel.org, "H. Peter Anvin" , Thomas Gleixner , Ingo Molnar , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-api@vger.kernel.org, Arnd Bergmann , Andy Lutomirski , Balbir Singh , Cyrill Gorcunov , Dave Hansen , Eugene Syromiatnikov , Florian Weimer , "H.J. Lu" , Jann Horn , Jonathan Corbet , Kees Cook , Mike Kravetz , Nadav Amit , Oleg Nesterov , Pavel Machek , Peter Zijlstra , Randy Dunlap , "Ravi V. Shankar" , Vedvyas Shanbhogue , Dave Martin , Weijiang Yang , Pengfei Xu References: <20201012153850.26996-1-yu-cheng.yu@intel.com> <20201012153850.26996-2-yu-cheng.yu@intel.com> <20201106173410.GG14914@zn.tnic> <20201106182822.GH14914@zn.tnic> From: "Yu, Yu-cheng" Message-ID: Date: Fri, 6 Nov 2020 10:32:18 -0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Thunderbird/68.12.1 MIME-Version: 1.0 In-Reply-To: <20201106182822.GH14914@zn.tnic> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 11/6/2020 10:28 AM, Borislav Petkov wrote: > On Fri, Nov 06, 2020 at 10:16:47AM -0800, Yu, Yu-cheng wrote: >> In the current shell, if GLIBC_TUNABLES variable is set as such, >> applications started will have CET features disabled. I can put more >> details here, or maybe a reference to the GLIBC man pages. > > Why do you keep repeating "the current shell"? You pass it with > setenv(3) too, can't you? > Ture. I will revise it. Yu-cheng