From: Peter Fang <peter.fang@intel.com>
To: Xu Yilun <yilun.xu@linux.intel.com>
Cc: Kishen Maloor <kishen.maloor@intel.com>, <kas@kernel.org>,
<djbw@kernel.org>, <rick.p.edgecombe@intel.com>, <x86@kernel.org>,
<linux-coco@lists.linux.dev>, <linux-kernel@vger.kernel.org>,
<kvm@vger.kernel.org>, <sohil.mehta@intel.com>,
<yilun.xu@intel.com>, <baolu.lu@linux.intel.com>,
<zhenzhong.duan@intel.com>, <xiaoyao.li@intel.com>
Subject: Re: [PATCH 04/15] x86/virt/tdx: Enable the Extensions right after basic TDX Module init
Date: Sun, 14 Jun 2026 00:00:21 -0700 [thread overview]
Message-ID: <20260614070021.GA3200182@pedri> (raw)
In-Reply-To: <aiaVk9Lx7iakgd4g@yilunxu-OptiPlex-7050>
On Mon, Jun 08, 2026 at 06:12:35PM +0800, Xu Yilun wrote:
>
> >
> > The handling of tdx_quote_init() in Patch 6 suggests a more
> > best-effort approach.
>
> TDX Quoting is however a clear self-contained add-on feature from OS POV.
> Though I'm not sure if a TDX platform is still a safe TCB with DICE
> available but failed, and good for "best-effort" policy? Maybe Peter
> could answer.
The DICE extension is just one of the ways to generate a Quote for the
guest. If DICE is not available, TDX can fall back to the existing
userspace SGX Quoting flow. So I think a best-effort approach makes
sense here.
> >
next prev parent reply other threads:[~2026-06-14 7:00 UTC|newest]
Thread overview: 104+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-22 3:41 [PATCH 00/15] Enable TDX Module Extensions and DICE-based TDX Quoting Xu Yilun
2026-05-22 3:41 ` [PATCH 01/15] x86/virt/tdx: Read global metadata for TDX Module Extensions Xu Yilun
2026-05-25 6:24 ` Xiaoyao Li
2026-05-25 6:54 ` Xiaoyao Li
2026-05-27 15:35 ` Kiryl Shutsemau
2026-05-28 4:25 ` Xu Yilun
2026-05-28 21:17 ` Edgecombe, Rick P
2026-05-29 15:34 ` Xu Yilun
2026-05-27 6:05 ` Sohil Mehta
2026-05-27 7:11 ` Xu Yilun
2026-05-27 17:17 ` Sohil Mehta
2026-05-28 3:48 ` Xu Yilun
2026-05-28 21:00 ` Edgecombe, Rick P
2026-05-29 16:59 ` Xu Yilun
2026-06-09 13:06 ` Adrian Hunter
2026-06-10 3:20 ` Xu Yilun
2026-06-12 22:20 ` Dan Williams (nvidia)
2026-05-22 3:41 ` [PATCH 02/15] x86/virt/tdx: Add extra memory to TDX Module for Extensions Xu Yilun
2026-05-25 8:56 ` Xiaoyao Li
2026-05-27 3:47 ` Xu Yilun
2026-05-27 6:38 ` Xiaoyao Li
2026-05-27 7:32 ` Xu Yilun
2026-05-27 8:18 ` Xiaoyao Li
2026-06-07 4:38 ` Kishen Maloor
2026-06-08 9:41 ` Xu Yilun
2026-06-09 13:38 ` Adrian Hunter
2026-06-10 5:13 ` Xu Yilun
2026-06-10 5:43 ` Adrian Hunter
2026-06-10 7:44 ` Xu Yilun
2026-06-12 23:49 ` Dan Williams (nvidia)
2026-05-22 3:41 ` [PATCH 03/15] x86/virt/tdx: Make TDX Module initialize Extensions Xu Yilun
2026-05-25 8:58 ` Xiaoyao Li
2026-06-05 8:46 ` Tony Lindgren
2026-06-09 15:14 ` Adrian Hunter
2026-06-10 8:09 ` Xu Yilun
2026-05-22 3:41 ` [PATCH 04/15] x86/virt/tdx: Enable the Extensions right after basic TDX Module init Xu Yilun
2026-05-25 6:00 ` Tony Lindgren
2026-05-27 4:02 ` Xu Yilun
2026-05-25 8:05 ` Xiaoyao Li
2026-05-28 21:32 ` Edgecombe, Rick P
2026-05-29 17:19 ` Xu Yilun
2026-06-07 4:38 ` Kishen Maloor
2026-06-08 10:12 ` Xu Yilun
2026-06-14 7:00 ` Peter Fang [this message]
2026-06-13 0:08 ` Dan Williams (nvidia)
2026-05-22 3:41 ` [RFC PATCH 05/15] x86/virt/tdx: Move tdx_tdr_pa() up in the file Xu Yilun
2026-05-28 21:32 ` Edgecombe, Rick P
2026-06-11 16:21 ` Adrian Hunter
2026-06-14 7:04 ` Peter Fang
2026-05-22 3:41 ` [RFC PATCH 06/15] x86/virt/tdx: Initialize Quoting extension during bringup Xu Yilun
2026-05-28 21:35 ` Edgecombe, Rick P
2026-06-14 7:10 ` Peter Fang
2026-06-11 16:22 ` Adrian Hunter
2026-06-14 7:20 ` Peter Fang
2026-06-13 0:00 ` Dan Williams (nvidia)
2026-06-14 7:50 ` Peter Fang
2026-05-22 3:41 ` [RFC PATCH 07/15] x86/virt/tdx: Prepare Quote buffer during extension bringup Xu Yilun
2026-05-28 22:30 ` Edgecombe, Rick P
2026-06-14 10:28 ` Peter Fang
2026-05-22 3:41 ` [RFC PATCH 08/15] x86/virt/tdx: Add interface to check Quoting availability Xu Yilun
2026-05-22 3:41 ` [RFC PATCH 09/15] x86/virt/tdx: Add interface to generate a Quote Xu Yilun
2026-05-28 22:30 ` Edgecombe, Rick P
2026-06-14 11:29 ` Peter Fang
2026-06-11 17:15 ` Adrian Hunter
2026-06-14 11:36 ` Peter Fang
2026-05-22 3:41 ` [RFC PATCH 10/15] x86/tdx: Move and rename Quote request structure Xu Yilun
2026-06-11 17:16 ` Adrian Hunter
2026-06-14 11:50 ` Peter Fang
2026-06-13 0:04 ` Dan Williams (nvidia)
2026-06-14 11:51 ` Peter Fang
2026-05-22 3:41 ` [RFC PATCH 11/15] KVM: TDX: Factor out userspace return path from tdx_get_quote() Xu Yilun
2026-05-22 3:41 ` [RFC PATCH 12/15] KVM: TDX: Add in-kernel Quote generation Xu Yilun
2026-06-13 0:20 ` Dan Williams (nvidia)
2026-06-14 11:57 ` Peter Fang
2026-05-22 3:41 ` [RFC PATCH 13/15] KVM: TDX: Support event-notify interrupts only with userspace quoting Xu Yilun
2026-06-11 19:36 ` Adrian Hunter
2026-06-14 12:57 ` Peter Fang
2026-05-22 3:41 ` [RFC PATCH 14/15] x86/virt/tdx: Embed version info in SEAMCALL leaf function definitions Xu Yilun
2026-05-25 9:00 ` Xiaoyao Li
2026-05-27 6:45 ` Xu Yilun
2026-05-27 7:44 ` Xiaoyao Li
2026-05-27 11:45 ` Xu Yilun
2026-06-12 5:47 ` Adrian Hunter
2026-06-13 15:55 ` Xu Yilun
2026-05-22 3:41 ` [RFC PATCH 15/15] x86/virt/tdx: Enable TDX Quoting extension Xu Yilun
2026-05-25 5:17 ` Tony Lindgren
2026-05-25 10:51 ` Xiaoyao Li
2026-05-26 9:00 ` Tony Lindgren
2026-05-26 15:45 ` Xu Yilun
2026-05-27 1:30 ` Xiaoyao Li
2026-06-07 4:41 ` Kishen Maloor
2026-06-08 15:10 ` Xu Yilun
2026-05-27 5:23 ` [PATCH 00/15] Enable TDX Module Extensions and DICE-based TDX Quoting Sohil Mehta
2026-05-27 10:38 ` Xu Yilun
2026-05-27 17:09 ` Sohil Mehta
2026-05-28 4:52 ` Xu Yilun
2026-05-28 19:50 ` Sohil Mehta
2026-06-01 9:36 ` Xu Yilun
2026-06-01 20:17 ` Sohil Mehta
2026-06-02 5:36 ` Xu Yilun
2026-06-07 4:36 ` Kishen Maloor
2026-06-08 6:54 ` Xu Yilun
2026-06-08 18:31 ` Adrian Hunter
2026-06-12 22:03 ` Dan Williams (nvidia)
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