From nobody Sun Feb 8 18:57:22 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+88092+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+88092+1787277+3901457@groups.io; dmarc=fail(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1648454927; cv=none; d=zohomail.com; s=zohoarc; b=VQTtP3OHS15w/xUV+/ZrncNGmIQpVQk6W69CSmDpqF8I5vFk23i01ZrIDCqtT18lxYgD9/KbB5FOA54wNK8Kbb0mTAJiAJbPoM3dq74Ob30J+HCYvYnXncfIjNXefwEh6zv4Qoh2Vkreq83Kszng9hRMWTYABE8SvY/janfBCxE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1648454927; 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=ZfKxwWqlt/wGo+HDAGekKl0FiZedIlhrFZpqc+0Cmks=; b=KLZJCVNbxv4x5VjYPDdU1jJHU5tLMeo2wHJbUrZFtQgtpo1oZbxEO8ZWrZ/cJ8UxgaTweSfV9LA7PmUsruQMRDfml+5/elfZH48nkLSvYWJt7ZAnJIMx1k6Bf7GQGN7zWj1q2T7xpij/RHjHQJnD64o8Oiah4PAwk021MWpDtzc= 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+88092+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 1648454927864501.0509959027539; Mon, 28 Mar 2022 01:08:47 -0700 (PDT) Return-Path: X-Received: by 127.0.0.2 with SMTP id db8gYY1788612xtUzlA1Cha9; Mon, 28 Mar 2022 01:08:47 -0700 X-Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by mx.groups.io with SMTP id smtpd.web08.8498.1648454922050566316 for ; Mon, 28 Mar 2022 01:08:47 -0700 X-IronPort-AV: E=McAfee;i="6200,9189,10299"; a="257770596" X-IronPort-AV: E=Sophos;i="5.90,216,1643702400"; d="scan'208";a="257770596" X-Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Mar 2022 01:08:46 -0700 X-IronPort-AV: E=Sophos;i="5.90,216,1643702400"; d="scan'208";a="563426611" X-Received: from mxu9-mobl1.ccr.corp.intel.com ([10.249.175.167]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Mar 2022 01:08:43 -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 V11 02/47] MdePkg: Update Cpuid.h for Tdx Date: Mon, 28 Mar 2022 16:07:41 +0800 Message-Id: <6884553089bc2cd4930df4a143a97574b39907d2.1648454440.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: YyvSORGS9Cl3EGv3K0z5t9Lrx1787277AA= Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1648454927; bh=I9vJ+o54z/2QQTj/grsydcyNrCKOFuMci12XkWE/aXY=; h=Cc:Date:From:Reply-To:Subject:To; b=CvoqzFqs+otTpNcLmuhDcN3M+z27RVYgseu9cOG3AUZXhU5TBg41ssLTbF4ZVU0sl+Q aDTp6O1CoWYmz/JX3Ut57LOJFhHM1cwUzkxzJPRk0T7TL9nftcOUue0xbNTIfhnEtYll+ afP7xtQ9rOZy2F/ti6Dvu3b2VZU/WTgydYU= X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1648454928976100001 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. View/Reply Online (#88092): https://edk2.groups.io/g/devel/message/88092 Mute This Topic: https://groups.io/mt/90079971/1787277 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org] -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-