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 21CECC2D0A3 for ; Fri, 6 Nov 2020 18:32:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B148621D81 for ; Fri, 6 Nov 2020 18:32:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727928AbgKFScW (ORCPT ); Fri, 6 Nov 2020 13:32:22 -0500 Received: from mga12.intel.com ([192.55.52.136]:34321 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726034AbgKFScW (ORCPT ); Fri, 6 Nov 2020 13:32:22 -0500 IronPort-SDR: Cp74Iq1flIMTKF+H5IKJrARO1I0RmYO/6NXQb86uJliKuaV9kSw7YdwST59G03fLRO+vWVMhdO CcRcGcpedCVA== X-IronPort-AV: E=McAfee;i="6000,8403,9797"; a="148863646" X-IronPort-AV: E=Sophos;i="5.77,457,1596524400"; d="scan'208";a="148863646" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Nov 2020 10:32:20 -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 Precedence: bulk List-ID: X-Mailing-List: linux-arch@vger.kernel.org Archived-At: List-Archive: List-Post: 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