From nobody Mon Feb 9 10:49:20 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) client-ip=66.175.222.108; envelope-from=bounce+27952+88211+1787277+3901457@groups.io; helo=mail02.groups.io; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+88211+1787277+3901457@groups.io; dmarc=fail(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1648597628; cv=none; d=zohomail.com; s=zohoarc; b=iaTQa83p3yz8jzIU26efXA91ji+EBOxLlQ46Gc+NRk9odmsBMVb5+UWNnSICKjE9JPVGC/oyRe7TyA01KqgonFu1RIiCi2affhVJ2wo9S5eH3MCmZkgcntXAczviS6SKPXkxifMnRYWTigLIrHbWhNwB8f0DboPv1ZKsrbItgyA= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1648597628; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:References:Sender:Subject:To; bh=3wA32yNKx4bgCZ48U0sHd7GGyTfMGbEVOBPHRPHe1jk=; b=iRcSDBBHI5FXX5kbpXMCMBS3430UBdy3Tejc60O+Vmu3L8cMB/zLXkw56FoNMLwP3v52Cv4cS70jAKWbGb8D2sHJqF+jcDWvIVJVgSYYy0WNxSFZ0nilwRLsWNgxItt4A9NqLbtPDW5w7MlEB3+xv/FMgJF07D8hC5XVJlIaPpg= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of groups.io designates 66.175.222.108 as permitted sender) smtp.mailfrom=bounce+27952+88211+1787277+3901457@groups.io; dmarc=fail header.from= (p=none dis=none) Received: from mail02.groups.io (mail02.groups.io [66.175.222.108]) by mx.zohomail.com with SMTPS id 1648597628644383.3079539969758; Tue, 29 Mar 2022 16:47:08 -0700 (PDT) Return-Path: X-Received: by 127.0.0.2 with SMTP id 6w0GYY1788612xQYUK6U97o1; Tue, 29 Mar 2022 16:47:08 -0700 X-Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by mx.groups.io with SMTP id smtpd.web11.1169.1648597627326913133 for ; Tue, 29 Mar 2022 16:47:07 -0700 X-IronPort-AV: E=McAfee;i="6200,9189,10301"; a="259374857" X-IronPort-AV: E=Sophos;i="5.90,220,1643702400"; d="scan'208";a="259374857" X-Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Mar 2022 16:47:01 -0700 X-IronPort-AV: E=Sophos;i="5.90,220,1643702400"; d="scan'208";a="521658337" X-Received: from zhangpen-mobl.ccr.corp.intel.com (HELO mxu9-mobl1.ccr.corp.intel.com) ([10.255.29.230]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Mar 2022 16:46:58 -0700 From: "Min Xu" To: devel@edk2.groups.io Cc: Min Xu , Ray Ni , Michael D Kinney , Liming Gao , Zhiguang Liu , Brijesh Singh , Erdem Aktas , James Bottomley , Jiewen Yao , Tom Lendacky , Gerd Hoffmann Subject: [edk2-devel] [PATCH V12 02/47] MdePkg: Update Cpuid.h for Tdx Date: Wed, 30 Mar 2022 07:45:55 +0800 Message-Id: <7d1ac99e26af78b93d26510865e1b1d74f515149.1648555175.git.min.m.xu@intel.com> In-Reply-To: References: MIME-Version: 1.0 Precedence: Bulk List-Unsubscribe: List-Subscribe: List-Help: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,min.m.xu@intel.com X-Gm-Message-State: t6BG8uQg3xqmtufAvvXMoylJx1787277AA= Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1648597628; bh=42vH3pVTWl5pJt8YGvZ+OliXLA5mHdKD44T3TrOtVyc=; h=Cc:Date:From:Reply-To:Subject:To; b=gsMR3QZV06UtVYvbk6vsIXLpkWNqtCrz9i5EkNiW7caaofKRf4L7P/LxpzSBoJLKyzw Xn9MtKG9DbZGUgtNpo3DYbCMW2YsLcY3kmSUzx0kkMncpRPVQMhqDyubgw1C+aDWyC0bd /prfa/hEXgSwAchoLFW2f4hXaS0PfiZbbi0= X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1648597630304100009 Content-Type: text/plain; charset="utf-8" RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3D3429 Guest software can be designed to run either as a TD, as a legacy virtual machine, or directly on the CPU, based on enumeration of its run-time environment. [TDX-Module] Chap 10.2 defines the flow and the new CPUID leaf 0x21. [TDX-Module] Architecture Specification: Intel(R) Trust Domain Extensions Module, Chap 10.2, 344425-003US, August 2021 https://www.intel.com/content/dam/develop/external/us/en/documents/ tdx-module-1.0-public-spec-v0.931.pdf Cc: Ray Ni Cc: Michael D Kinney Cc: Liming Gao Cc: Zhiguang Liu Cc: Brijesh Singh Cc: Erdem Aktas Cc: James Bottomley Cc: Jiewen Yao Cc: Tom Lendacky Cc: Gerd Hoffmann Reviewed-by: Liming Gao Acked-by: Gerd Hoffmann Signed-off-by: Min Xu --- MdePkg/Include/Register/Intel/Cpuid.h | 35 +++++++++++++++++++++++++-- 1 file changed, 33 insertions(+), 2 deletions(-) diff --git a/MdePkg/Include/Register/Intel/Cpuid.h b/MdePkg/Include/Registe= r/Intel/Cpuid.h index bd6349d7940d..350bf60252e1 100644 --- a/MdePkg/Include/Register/Intel/Cpuid.h +++ b/MdePkg/Include/Register/Intel/Cpuid.h @@ -12,6 +12,8 @@ @par Specification Reference: Intel(R) 64 and IA-32 Architectures Software Developer's Manual, Volume = 2A, November 2018, CPUID instruction. + Architecture Specification: Intel(R) Trust Domain Extensions Module, Cha= p 10.2 + 344425-003US, August 2021 =20 **/ =20 @@ -321,9 +323,9 @@ typedef union { /// UINT32 RDRAND : 1; /// - /// [Bit 31] Always returns 0. + /// [Bit 31] A value of 1 indicates that processor is in Para-Virtuali= zed. /// - UINT32 NotUsed : 1; + UINT32 ParaVirtualized : 1; } Bits; /// /// All bit fields as a 32-bit value @@ -3689,6 +3691,35 @@ typedef union { /// @} /// =20 +/** + CPUID Guest TD Run Time Environment Enumeration Leaf + + @note + Guest software can be designed to run either as a TD, as a legacy virtua= l machine, + or directly on the CPU, based on enumeration of its run-time environment. + CPUID leaf 21H emulation is done by the Intel TDX module. Sub-leaf 0 ret= urns the values + shown below. Other sub-leaves return 0 in EAX/EBX/ECX/EDX. + EAX: 0x00000000 + EBX: 0x65746E49 "Inte" + ECX: 0x20202020 " " + EDX: 0x5844546C "lTDX" + + @param EAX CPUID_GUESTTD_RUNTIME_ENVIRONMENT (= 0x21) + @param ECX Level number + +**/ +#define CPUID_GUESTTD_RUNTIME_ENVIRONMENT 0x21 + +/// +/// @{ CPUID Guest TD signature values returned by Intel processors +/// +#define CPUID_GUESTTD_SIGNATURE_GENUINE_INTEL_EBX SIGNATURE_32 ('I', 'n',= 't', 'e') +#define CPUID_GUESTTD_SIGNATURE_GENUINE_INTEL_ECX SIGNATURE_32 (' ', ' ',= ' ', ' ') +#define CPUID_GUESTTD_SIGNATURE_GENUINE_INTEL_EDX SIGNATURE_32 ('l', 'T',= 'D', 'X') +/// +/// @} +/// + /** CPUID Extended Function =20 --=20 2.29.2.windows.2 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. 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