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=-5.4 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,UNPARSEABLE_RELAY,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 8E351C433E0 for ; Thu, 11 Feb 2021 06:12:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 34EE664E3C for ; Thu, 11 Feb 2021 06:12:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229469AbhBKGMf (ORCPT ); Thu, 11 Feb 2021 01:12:35 -0500 Received: from out30-43.freemail.mail.aliyun.com ([115.124.30.43]:60152 "EHLO out30-43.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229451AbhBKGMe (ORCPT ); Thu, 11 Feb 2021 01:12:34 -0500 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R121e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04395;MF=tianjia.zhang@linux.alibaba.com;NM=1;PH=DS;RN=12;SR=0;TI=SMTPD_---0UOP3L98_1613023910; Received: from 30.27.210.10(mailfrom:tianjia.zhang@linux.alibaba.com fp:SMTPD_---0UOP3L98_1613023910) by smtp.aliyun-inc.com(127.0.0.1); Thu, 11 Feb 2021 14:11:51 +0800 Subject: Re: [PATCH v4 4/5] x86/sgx: Allows ioctl PROVISION to execute before CREATE To: Jarkko Sakkinen Cc: Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , Sean Christopherson , Shuah Khan , x86@kernel.org, linux-sgx@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Jia Zhang References: <20210201132653.35690-1-tianjia.zhang@linux.alibaba.com> <20210201132653.35690-5-tianjia.zhang@linux.alibaba.com> From: Tianjia Zhang Message-ID: <7533917d-da77-68a5-f1ba-194a1d4a4f68@linux.alibaba.com> Date: Thu, 11 Feb 2021 14:11:50 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.7.0 MIME-Version: 1.0 In-Reply-To: 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-sgx@vger.kernel.org On 2/3/21 5:57 AM, Jarkko Sakkinen wrote: > On Mon, Feb 01, 2021 at 09:26:52PM +0800, Tianjia Zhang wrote: >> In the function sgx_create_enclave(), the direct assignment >> operation of attributes_mask determines that the ioctl PROVISION >> operation must be executed after the ioctl CREATE operation, >> which will limit the flexibility of sgx developers. > > Please write acronyms correctly. It's not 'sgx'. It's 'SGX'. > > Who are the "sgx developers" and how do they benefit from this? > > /Jarkko > It mainly refers to application developers based on SGX technology. One of the benefits that this brings is that the PROVISION operation can be called before or after the enclave is created, compared to the previous PROVISION operation can only be executed after the enclave is created. Thanks, Tianjia