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 E63A1C4320E for ; Mon, 9 Aug 2021 22:08:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C45E660FDA for ; Mon, 9 Aug 2021 22:08:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236574AbhHIWJS (ORCPT ); Mon, 9 Aug 2021 18:09:18 -0400 Received: from mga09.intel.com ([134.134.136.24]:9597 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232683AbhHIWJS (ORCPT ); Mon, 9 Aug 2021 18:09:18 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10070"; a="214777623" X-IronPort-AV: E=Sophos;i="5.84,308,1620716400"; d="scan'208";a="214777623" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Aug 2021 15:08:56 -0700 X-IronPort-AV: E=Sophos;i="5.84,308,1620716400"; d="scan'208";a="674425257" Received: from pmmonter-mobl1.amr.corp.intel.com (HELO skuppusw-mobl5.amr.corp.intel.com) ([10.212.72.120]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Aug 2021 15:08:55 -0700 Subject: Re: [PATCH 06/11] x86/sev: Replace occurrences of sev_es_active() with prot_guest_has() To: Tom Lendacky , Joerg Roedel Cc: linux-kernel@vger.kernel.org, x86@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, iommu@lists.linux-foundation.org, kvm@vger.kernel.org, linux-efi@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-graphics-maintainer@vmware.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, kexec@lists.infradead.org, linux-fsdevel@vger.kernel.org, Borislav Petkov , Brijesh Singh , Andi Kleen , Tianyu Lan , Thomas Gleixner , Ingo Molnar References: <934f3e72-49d1-be56-6fa2-f37a02413fb2@amd.com> From: "Kuppuswamy, Sathyanarayanan" Message-ID: Date: Mon, 9 Aug 2021 15:08:53 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <934f3e72-49d1-be56-6fa2-f37a02413fb2@amd.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@vger.kernel.org On 8/9/21 2:59 PM, Tom Lendacky wrote: >> Not sure how TDX will handle AP booting, are you sure it needs this >> special setup as well? Otherwise a check for SEV-ES would be better >> instead of the generic PATTR_GUEST_PROT_STATE. > Yes, I'm not sure either. I figure that change can be made, if needed, as > part of the TDX support. We don't plan to set PROT_STATE. So it does not affect TDX. For SMP, we use MADT ACPI table for AP booting. -- Sathyanarayanan Kuppuswamy Linux Kernel Developer