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 BF6C4C433E9 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 958C564F9E for ; Fri, 12 Mar 2021 21:34:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235287AbhCLVeG (ORCPT ); Fri, 12 Mar 2021 16:34:06 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38150 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235275AbhCLVdk (ORCPT ); Fri, 12 Mar 2021 16:33:40 -0500 Received: from mail-pf1-x42f.google.com (mail-pf1-x42f.google.com [IPv6:2607:f8b0:4864:20::42f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AB840C061762 for ; Fri, 12 Mar 2021 13:33:39 -0800 (PST) Received: by mail-pf1-x42f.google.com with SMTP id 16so2749880pfn.5 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=V19RJYcA1u179gZGDV2VisC2msQr0vzy/wOSTpibctI9fRbVJagcmfk/M9zt2IkkQ8 GReEhu99FfoUSC2ENDqnKonJLP1XWpJFQwdb/zfg97BzzdVU6kEscQYCz2XQy8vJcAYO KiuM5wOd/ni/WeY/+xXm6Vuja+9nodBDDGrvHEwVohGISLHqjNiMicSShwbgmb8ZHGmH qUdKryr+y9To7vlXPxdCU8p2BenOsXL9Lk6dc09QwFUTQVknTQgNUH+i15XEr4DxR6Ds xXyF6+u7kWpGDXo+SBPe9NfyTz95z9lx/+MMYNGFnrN4/XQtnr/wnf2rtw0XJ9RSqCSi OCjg== X-Gm-Message-State: AOAM530V4I5GrvNF3IO95ZpE6EEwjhVd22cT5Of1QNfxnz4SvqN+y7fk xd4SH2OP1SzFv3SUJzcVswwRcw== 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: linux-kernel@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!