linux-kernel - Re: [PATCH v3 21/26] x86/virt/tdx: Establish contexts for the new TDX Module

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <aXdH5taHr_Kcgmdx@tlindgre-MOBL1>
Date: Mon, 26 Jan 2026 12:54:30 +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,
	Farrah Chen <farrah.chen@...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 21/26] x86/virt/tdx: Establish contexts for the new
 TDX Module

On Fri, Jan 23, 2026 at 06:55:29AM -0800, Chao Gao wrote:
> After being installed, the new TDX Module shouldn't re-configure the
> global HKID, TDMRs or PAMTs. Instead, to preserve running TDs, it should
> import the handoff data from the old module to establish all necessary
> contexts.
> 
> Once the import is done, the TDX Module update is complete, and the new
> module is ready to handle requests from the VMM and guests.
> 
> Call the TDH.SYS.UPDATE SEAMCALL to import the handoff data from the old
> module.

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