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=-13.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL 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 A87AAC433E0 for ; Fri, 12 Mar 2021 21:34:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7398C64F8F for ; Fri, 12 Mar 2021 21:34:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235274AbhCLVd7 (ORCPT ); Fri, 12 Mar 2021 16:33:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38146 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235163AbhCLVdk (ORCPT ); Fri, 12 Mar 2021 16:33:40 -0500 Received: from mail-pg1-x530.google.com (mail-pg1-x530.google.com [IPv6:2607:f8b0:4864:20::530]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8EF06C061574 for ; Fri, 12 Mar 2021 13:33:39 -0800 (PST) Received: by mail-pg1-x530.google.com with SMTP id w34so15624042pga.8 for ; Fri, 12 Mar 2021 13:33:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=iVsxRcsawWsgdZYrcTYOb1n/2Sbbp73pya7fmqOzbMM=; b=iU0N0qMeYphwKiEy/0gaspa6VWKm+Nt69kIn87RoNKxVXvrAx5xTe9v5AzEAN28HA7 YtKRHO05kwSsCPWGpTpqIWE+yljx5wsWZMMfePpFUKqDFK1aK35s/y3dWNP7OZ7ZCZVR 0zMS3dzjgF/LijZi2YGejfpyGDSV74yVL59mb7BVQ8AD/EzLTxdkB1pU32QGNoNJ1t28 HheevnlBsUSuT/xl8BNmCnFrt1FBOsBZzfa7c69ql6kTimL4Dd1eU6mw03rA42jgrqts Rk+GNZU77eHk7SlGMBw8oaHOlrroqEqRpGRkXTCZATJVsi3Jjcik4oEbnpRf0SWORfUA LoEg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=iVsxRcsawWsgdZYrcTYOb1n/2Sbbp73pya7fmqOzbMM=; b=hM4xExNU1QUTBMOL9545WEQ/AICakk4ENoL6QEEfzOKEIXh2EKTsskXFwzSJG+NTHd tsS/8y/GAvIxPYzaedKH1e4FPepTNboy0xAZM13CTLX8oycjoz+qIqi7o+YLAHtIOIKm 0nfa+CJnA3kjEjhr0LU+BdnbDeEQvuBbfTr2GsGPfeCqOHoU+Ecy5u3lt22zjgtVfMsg Shzmm9Ef3sZAorSd3AMQKPHTjiI7HJIX5UclbygUAg87uSoD0TbjpZZsxT+cv2fMn1In wx52QueKQ0Y7RodhkqZn+EX4vyEc5XJNlPrJlcUO4V83saNRtGkbmqgQQEyNN07VhXVG UIKA== X-Gm-Message-State: AOAM532VLohjNyHikNikP+7OJJ+4HGYqmx2rWFG7kCOdbUP/TXQ8ShVo Uf4Z4pXOMsHv8FgH6hc09nsVG8rt9skZLw== X-Google-Smtp-Source: ABdhPJyzFmLGS3OHDbNmbZP3xGaBaD+KZkN2wLIU/7KbnCgdx1a9fR5Dif0M2wDntXghS47+usszog== X-Received: by 2002:a63:74d:: with SMTP id 74mr13471770pgh.316.1615584819001; Fri, 12 Mar 2021 13:33:39 -0800 (PST) Received: from google.com ([2620:15c:f:10:e1a6:2eeb:4e45:756]) by smtp.gmail.com with ESMTPSA id i14sm3141527pjh.17.2021.03.12.13.33.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Mar 2021 13:33:38 -0800 (PST) Date: Fri, 12 Mar 2021 13:33:31 -0800 From: Sean Christopherson To: Kai Huang Cc: kvm@vger.kernel.org, x86@kernel.org, linux-sgx@vger.kernel.org, linux-kernel@vger.kernel.org, jarkko@kernel.org, luto@kernel.org, dave.hansen@intel.com, 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 Subject: Re: [PATCH v2 06/25] x86/cpu/intel: Allow SGX virtualization without Launch Control support Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Tue, Mar 09, 2021, Kai Huang wrote: > + if (cpu_has(c, X86_FEATURE_SGX) && IS_ENABLED(CONFIG_X86_SGX)) { > + /* > + * Separate out SGX driver enabling from KVM. This allows KVM > + * guests to use SGX even if the kernel SGX driver refuses to > + * use it. This happens if flexible Faunch Control is not /Faunch/Launch Clever handling of the multitude of combinations!