linux-kernel - Re: [PATCH v3 03/26] x86/virt/tdx: Move low level SEAMCALL helpers out of <asm/tdx.h>

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Message-ID: <6be07816-a868-4278-b5bb-f07bdaf5b4d7@intel.com>
Date: Thu, 29 Jan 2026 08:03:10 -0800
From: Dave Hansen <dave.hansen@...el.com>
To: Chao Gao <chao.gao@...el.com>
Cc: Binbin Wu <binbin.wu@...ux.intel.com>, linux-coco@...ts.linux.dev,
 linux-kernel@...r.kernel.org, kvm@...r.kernel.org, x86@...nel.org,
 reinette.chatre@...el.com, ira.weiny@...el.com, kai.huang@...el.com,
 dan.j.williams@...el.com, yilun.xu@...ux.intel.com, sagis@...gle.com,
 vannapurve@...gle.com, paulmck@...nel.org, nik.borisov@...e.com,
 zhenzhong.duan@...el.com, seanjc@...gle.com, rick.p.edgecombe@...el.com,
 kas@...nel.org, dave.hansen@...ux.intel.com, vishal.l.verma@...el.com,
 Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
 Borislav Petkov <bp@...en8.de>, "H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH v3 03/26] x86/virt/tdx: Move low level SEAMCALL helpers
 out of <asm/tdx.h>

On 1/29/26 06:02, Chao Gao wrote:'
...
> But this sounds like the copyright notice should be kept.
> 
> Do you mean the copyright notices from the original files should be carried
> over to the new file?
> 
> This patch extracts code from arch/x86/include/asm/tdx.h and
> arch/x86/virt/vmx/tdx/tdx.c. They have:
> 
> 	Copyright (C) 2021-2022 Intel Corporation
> 	Copyright(c) 2023 Intel Corporation.
> 
> So for the new file, the copyright notice should be
> 
> 	Copyright (C) 2021-2023 Intel Corporation
> ?

The most straightforward thing to do is to copy the gunk from the
original file:

	Copyright (C) 2021-2023 Intel Corporation

... which is as of today the "official" Intel way of doing it with the
"(C)" just like that.

along with:

	/* SPDX-License-Identifier: GPL-2.0 */

and a note in the changelog about what you did. There's no need to do
any more than that because that's what git is for.