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 CD49FC41620 for ; Wed, 20 Jan 2021 22:12:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B210223602 for ; Wed, 20 Jan 2021 22:12:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730195AbhATWA7 (ORCPT ); Wed, 20 Jan 2021 17:00:59 -0500 Received: from mga05.intel.com ([192.55.52.43]:56345 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2436695AbhATVC6 (ORCPT ); Wed, 20 Jan 2021 16:02:58 -0500 IronPort-SDR: bYPowWkbbVjyAJ6I71CQIM9w2b7TRqgo4oS0/RE+S+beJksseHrZVwetsXGbXKJPEcG/cP+NA+ 9V7J7RtvLGwA== X-IronPort-AV: E=McAfee;i="6000,8403,9870"; a="263990055" X-IronPort-AV: E=Sophos;i="5.79,362,1602572400"; d="scan'208";a="263990055" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jan 2021 13:02:17 -0800 IronPort-SDR: H+4uyy08i0Wsv5OSi+x0Ru3l4yHO4E+L8tD0igxvdMfXZbDZcO40SadJNmqZeWcAsLvr3AtQ0T zIt5UWP/KO7w== X-IronPort-AV: E=Sophos;i="5.79,362,1602572400"; d="scan'208";a="351208171" Received: from raavalos-mobl2.amr.corp.intel.com (HELO [10.212.38.24]) ([10.212.38.24]) by orsmga003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jan 2021 13:02:16 -0800 Subject: Re: [RFC PATCH v2 06/26] x86/cpu/intel: Allow SGX virtualization without Launch Control support To: Kai Huang , linux-sgx@vger.kernel.org, kvm@vger.kernel.org, x86@kernel.org Cc: seanjc@google.com, jarkko@kernel.org, luto@kernel.org, haitao.huang@intel.com, pbonzini@redhat.com, bp@alien8.de, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, jethro@fortanix.com, b.thiel@posteo.de References: From: Dave Hansen Autocrypt: addr=dave.hansen@intel.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-sgx@vger.kernel.org On 1/17/21 7:27 PM, Kai Huang wrote: > - enable_sgx = cpu_has(c, X86_FEATURE_SGX) && > - cpu_has(c, X86_FEATURE_SGX_LC) && > - IS_ENABLED(CONFIG_X86_SGX); > + enable_sgx_driver = cpu_has(c, X86_FEATURE_SGX) && > + cpu_has(c, X86_FEATURE_SGX1) && > + IS_ENABLED(CONFIG_X86_SGX) && > + cpu_has(c, X86_FEATURE_SGX_LC); > + enable_sgx_virt = cpu_has(c, X86_FEATURE_SGX) && > + cpu_has(c, X86_FEATURE_SGX1) && > + IS_ENABLED(CONFIG_X86_SGX) && > + IS_ENABLED(CONFIG_X86_SGX_VIRTUALIZATION) && > + enable_vmx; Would it be too much to ask that the SGX/SGX1 checks not be duplicated? Perhaps: enable_sgx_any = cpu_feature_enabled(CONFIG_X86_SGX) && cpu_feature_enabled(CONFIG_X86_SGX1); enable_sgx_driver = enable_sgx_any && cpu_has(c, X86_FEATURE_SGX_LC); enable_sgx_virt = enable_sgx_any && enable_vmx && IS_ENABLED(CONFIG_X86_SGX_VIRTUALIZATION) BTW, CONFIG_X86_SGX_VIRTUALIZATION is a pretty porky name. Maybe just CONFIG_X86_SGX_VIRT?