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=-10.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 60E81C433DB for ; Tue, 16 Feb 2021 18:40:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2989464E10 for ; Tue, 16 Feb 2021 18:40:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229876AbhBPSkw (ORCPT ); Tue, 16 Feb 2021 13:40:52 -0500 Received: from mga11.intel.com ([192.55.52.93]:23406 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229628AbhBPSku (ORCPT ); Tue, 16 Feb 2021 13:40:50 -0500 IronPort-SDR: hHe7etTkdbXM5iRWP/Bu/dY/sRf66H97EwscOPXnlmzcebgL/Mkq+LO8WEmHpTHqHNLMEd6UTO i/g3fRCy3AQA== X-IronPort-AV: E=McAfee;i="6000,8403,9897"; a="179475861" X-IronPort-AV: E=Sophos;i="5.81,184,1610438400"; d="scan'208";a="179475861" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Feb 2021 10:40:09 -0800 IronPort-SDR: eORaqr6C0IuWb9pK8/kPI9WEKlGoofR0/fBR7GEfpW4H9pEeWx/NzWBpM1m927At0TO2AQJ7Uo bnjo37aqTKCA== X-IronPort-AV: E=Sophos;i="5.81,184,1610438400"; d="scan'208";a="589333012" Received: from twblanch-mobl.amr.corp.intel.com (HELO [10.209.156.22]) ([10.209.156.22]) by fmsmga006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Feb 2021 10:40:08 -0800 Subject: Re: [RFC PATCH v5 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, rick.p.edgecombe@intel.com, 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: <82c304d6f4e8ebfa9b35d1be74360a5004179c5f.1613221549.git.kai.huang@intel.com> 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: <82c304d6f4e8ebfa9b35d1be74360a5004179c5f.1613221549.git.kai.huang@intel.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-sgx@vger.kernel.org On 2/13/21 5:29 AM, Kai Huang wrote: > From: Sean Christopherson > > The kernel will currently disable all SGX support if the hardware does > not support launch control. Make it more permissive to allow SGX > virtualization on systems without Launch Control support. This will > allow KVM to expose SGX to guests that have less-strict requirements on > the availability of flexible launch control. ... Acked-by: Dave Hansen