From patchwork Tue Feb 16 03:31:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "tianjia.zhang" X-Patchwork-Id: 383497 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, UNPARSEABLE_RELAY, USER_AGENT_GIT autolearn=unavailable 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 88B2FC433DB for ; Tue, 16 Feb 2021 03:33:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 63ABB64DCF for ; Tue, 16 Feb 2021 03:33:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229993AbhBPDcq (ORCPT ); Mon, 15 Feb 2021 22:32:46 -0500 Received: from out30-56.freemail.mail.aliyun.com ([115.124.30.56]:53430 "EHLO out30-56.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229894AbhBPDci (ORCPT ); Mon, 15 Feb 2021 22:32:38 -0500 X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R211e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=alimailimapcm10staff010182156082; MF=tianjia.zhang@linux.alibaba.com; NM=1; PH=DS; RN=13; SR=0; TI=SMTPD_---0UOjzwRj_1613446294; Received: from localhost(mailfrom:tianjia.zhang@linux.alibaba.com fp:SMTPD_---0UOjzwRj_1613446294) by smtp.aliyun-inc.com(127.0.0.1); Tue, 16 Feb 2021 11:31:35 +0800 From: Tianjia Zhang To: Jarkko Sakkinen , 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 Cc: Tianjia Zhang Subject: [PATCH v5 2/3] x86/sgx: Allows ioctl PROVISION to execute before CREATE Date: Tue, 16 Feb 2021 11:31:32 +0800 Message-Id: <20210216033133.79543-3-tianjia.zhang@linux.alibaba.com> X-Mailer: git-send-email 2.19.1.3.ge56e4f7 In-Reply-To: <20210216033133.79543-1-tianjia.zhang@linux.alibaba.com> References: <20210216033133.79543-1-tianjia.zhang@linux.alibaba.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org 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. This patch takes the assignment of attributes_mask from the function sgx_create_enclave() has been moved to the function sgx_open(), this will allow users to perform ioctl PROVISION operations before ioctl CREATE, increase the flexibility of the API and reduce restrictions. Signed-off-by: Tianjia Zhang --- arch/x86/kernel/cpu/sgx/driver.c | 1 + arch/x86/kernel/cpu/sgx/ioctl.c | 1 - 2 files changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/sgx/driver.c b/arch/x86/kernel/cpu/sgx/driver.c index 8ce6d8371cfb..892e2a2a3221 100644 --- a/arch/x86/kernel/cpu/sgx/driver.c +++ b/arch/x86/kernel/cpu/sgx/driver.c @@ -36,6 +36,7 @@ static int sgx_open(struct inode *inode, struct file *file) return ret; } + encl->attributes_mask = SGX_ATTR_DEBUG | SGX_ATTR_MODE64BIT | SGX_ATTR_KSS; file->private_data = encl; return 0; diff --git a/arch/x86/kernel/cpu/sgx/ioctl.c b/arch/x86/kernel/cpu/sgx/ioctl.c index 90a5caf76939..1c6ecf9fbeff 100644 --- a/arch/x86/kernel/cpu/sgx/ioctl.c +++ b/arch/x86/kernel/cpu/sgx/ioctl.c @@ -109,7 +109,6 @@ static int sgx_encl_create(struct sgx_encl *encl, struct sgx_secs *secs) encl->base = secs->base; encl->size = secs->size; encl->attributes = secs->attributes; - encl->attributes_mask = SGX_ATTR_DEBUG | SGX_ATTR_MODE64BIT | SGX_ATTR_KSS; /* Set only after completion, as encl->lock has not been taken. */ set_bit(SGX_ENCL_CREATED, &encl->flags);