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Date: Wed, 3 Nov 2021 07:09:14 +0100
From: "Gerd Hoffmann" <kraxel@redhat.com>
To: Min Xu <min.m.xu@intel.com>
Cc: devel@edk2.groups.io, Brijesh Singh <brijesh.singh@amd.com>,
	Erdem Aktas <erdemaktas@google.com>,
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	Eric Dong <eric.dong@intel.com>, Ray Ni <ray.ni@intel.com>,
	Rahul Kumar <rahul1.kumar@intel.com>
Subject: Re: [PATCH V3 14/29] UefiCpuPkg: Enable Tdx support in MpInitLib
Message-ID: <20211103060914.scktdnjbfzrtu4xk@sirius.home.kraxel.org>
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> +++ b/UefiCpuPkg/Library/MpInitLib/X64/IntelTdcall.nasm
> @@ -0,0 +1,120 @@
> +;------------------------------------------------------------------------------
> +;*
> +;* Copyright (c) 2020 - 2021, Intel Corporation. All rights reserved.<BR>
> +;* SPDX-License-Identifier: BSD-2-Clause-Patent
> +;*
> +;*
> +;------------------------------------------------------------------------------
> +
> +DEFAULT REL
> +SECTION .text
> +
> +%macro tdcall 0
> +    db 0x66,0x0f,0x01,0xcc
> +%endmacro

Hmm, could you just use TdxLib instead of bringing your own copy of the
assembler code?

take care,
  Gerd