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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9C4A7C433FE for ; Wed, 23 Feb 2022 10:43:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239697AbiBWKoS (ORCPT ); Wed, 23 Feb 2022 05:44:18 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54878 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239598AbiBWKoP (ORCPT ); Wed, 23 Feb 2022 05:44:15 -0500 Received: from mail-pg1-x52e.google.com (mail-pg1-x52e.google.com [IPv6:2607:f8b0:4864:20::52e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 50AC058E7D for ; Wed, 23 Feb 2022 02:43:48 -0800 (PST) Received: by mail-pg1-x52e.google.com with SMTP id 75so19537536pgb.4 for ; Wed, 23 Feb 2022 02:43:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=message-id:date:mime-version:user-agent:subject:content-language:to :cc:references:from:in-reply-to:content-transfer-encoding; bh=izF6/BOlFRf0GfvXEkyLgXWuNg7Bc9Mpe7Dcz3gCT68=; b=chEEFmEPoDo1VPyqjA70d68X5C0NptFBYwl6Fv98rSsbuKhE52Mm+kdu7Y0K1UC9s/ gWvQYWdgPqCLZ3Y9s9DYNIq7MB5k0G+LHybr0m/C66JhLpYnLIz7WN3PLXZzaGVTzBBu x15MYb5DoaJ+qKOCionM/Eui/pQVJwfiAEs5dN43wwvz7q98oYNbeQecYKUqECKepIYc f/KzPBSLD7bw8oJmh7/Xtu6Wnof8hjcjnmmjvw2woSk11pTbR50yfBT/HJH6H5lSfFCa 05a/mcUYQjJLNlki0D9QPXdX/hcGm0jKahKEiay9QhyYQkyUomG7wS21+M7kgJZZJYBF VJXA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=izF6/BOlFRf0GfvXEkyLgXWuNg7Bc9Mpe7Dcz3gCT68=; b=Q/inwAJaeUwJK+WYifXfw4pTV12yCHthobxdIxn63xKhMoBWAycbFSh92WS31wrs9Y jQ9Y0PYllrKk5LBuPx796oUvv1Yx3Ao3NrtALxYrJ0ec4M9vMQhSlDvlLdt4zJP5PlA+ r1xa3i7bvVhj6HISKFC5gfWr+S0LM8kVt7TAojfnNFqd0mfi01dB9zZwGnIcANmP09Jn 1csFpE+Pjd4px8rTeFOR5niFLwstEryjjeP7hTiGk604KTSNSOn5u55Oht/CAA+ohftJ VTNAthulILJAmJXqBM3KnVYuQwuNpqkIxqAdi9aRjb+l1ru54PO0ZC6LQavg43wIwWsV A1FA== X-Gm-Message-State: AOAM533cfgM4bA6ip9q46A1vKbIOijajUgPrmXGRd2wUfOY3a+SU2aPI mBnhA3a8nB0VA8vc1k45nfo= X-Google-Smtp-Source: ABdhPJysu9zb0UfI2rxfNbgv89NTLiU+G0srjigNHQKvLWHK3KsehgF7WzK+S2uETXCc1AcZNxngbA== X-Received: by 2002:a63:e604:0:b0:373:8aca:846e with SMTP id g4-20020a63e604000000b003738aca846emr23003518pgh.406.1645613027806; Wed, 23 Feb 2022 02:43:47 -0800 (PST) Received: from ?IPV6:2404:f801:0:5:8000::754? ([2404:f801:9000:1a:efea::754]) by smtp.gmail.com with ESMTPSA id ms7sm2494784pjb.56.2022.02.23.02.43.41 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 23 Feb 2022 02:43:47 -0800 (PST) Message-ID: Date: Wed, 23 Feb 2022 18:43:40 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.6.0 Subject: Re: [PATCH 1/4] x86/hyperv: Add missing ARCH_HAS_CC_PLATFORM dependency Content-Language: en-US To: Borislav Petkov Cc: "Kirill A. Shutemov" , Wei Liu , tglx@linutronix.de, mingo@redhat.com, dave.hansen@intel.com, luto@kernel.org, peterz@infradead.org, sathyanarayanan.kuppuswamy@linux.intel.com, aarcange@redhat.com, ak@linux.intel.com, dan.j.williams@intel.com, david@redhat.com, hpa@zytor.com, jmattson@google.com, seanjc@google.com, thomas.lendacky@amd.com, brijesh.singh@amd.com, x86@kernel.org, linux-kernel@vger.kernel.org, "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Dexuan Cui , Tianyu Lan References: <20220222185740.26228-1-kirill.shutemov@linux.intel.com> <20220222185740.26228-2-kirill.shutemov@linux.intel.com> <4769a3c0-449b-184a-5c61-a0e155f9c5b4@gmail.com> From: Tianyu Lan In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2/23/2022 6:41 PM, Borislav Petkov wrote: > On Wed, Feb 23, 2022 at 03:04:41PM +0800, Tianyu Lan wrote: >> Current Hyper-V Isolation VM requires AMD_MEM_ENCRYPT option which > > Where is that isolation VM option? Out of tree? > > Because > > $ git grep AMD_MEM_ENCRYPT | grep Kconfig > arch/x86/Kconfig:1540:config AMD_MEM_ENCRYPT > arch/x86/Kconfig:1553:config AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT > arch/x86/Kconfig:1555: depends on AMD_MEM_ENCRYPT > > and those ain't it. Hyper-V code check cpuid during runtime and there is no Hyper-V isolation VM option.