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: <aXc7wqVk0tDnm-CU@tlindgre-MOBL1>
Date: Mon, 26 Jan 2026 12:02:42 +0200
From: Tony Lindgren <tony.lindgren@...ux.intel.com>
To: Chao Gao <chao.gao@...el.com>
Cc: 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 Fri, Jan 23, 2026 at 06:55:11AM -0800, Chao Gao wrote:
> From: Kai Huang <kai.huang@...el.com>
> 
> TDX host core code implements three seamcall*() helpers to make SEAMCALL
> to the TDX module.  Currently, they are implemented in <asm/tdx.h> and
> are exposed to other kernel code which includes <asm/tdx.h>.
> 
> However, other than the TDX host core, seamcall*() are not expected to
> be used by other kernel code directly.  For instance, for all SEAMCALLs
> that are used by KVM, the TDX host core exports a wrapper function for
> each of them.
> 
> Move seamcall*() and related code out of <asm/tdx.h> and make them only
> visible to TDX host core.

Reviewed-by: Tony Lindgren <tony.lindgren@...ux.intel.com>