From: "Edgecombe, Rick P" <rick.p.edgecombe@intel.com>
To: "Li, Xiaoyao" <xiaoyao.li@intel.com>,
"linux-coco@lists.linux.dev" <linux-coco@lists.linux.dev>,
"nik.borisov@suse.com" <nik.borisov@suse.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Duan, Zhenzhong" <zhenzhong.duan@intel.com>,
"x86@kernel.org" <x86@kernel.org>
Cc: "Hansen, Dave" <dave.hansen@intel.com>,
"dave.hansen@linux.intel.com" <dave.hansen@linux.intel.com>,
"kas@kernel.org" <kas@kernel.org>,
"seanjc@google.com" <seanjc@google.com>,
"mingo@redhat.com" <mingo@redhat.com>,
"Peng, Chao P" <chao.p.peng@intel.com>,
"pbonzini@redhat.com" <pbonzini@redhat.com>,
"Tian, Kevin" <kevin.tian@intel.com>,
"jgg@nvidia.com" <jgg@nvidia.com>,
"aneesh.kumar@kernel.org" <aneesh.kumar@kernel.org>,
"Verma, Vishal L" <vishal.l.verma@intel.com>,
"hpa@zytor.com" <hpa@zytor.com>,
"tglx@kernel.org" <tglx@kernel.org>,
"nicolinc@nvidia.com" <nicolinc@nvidia.com>,
"Gao, Chao" <chao.gao@intel.com>, "bp@alien8.de" <bp@alien8.de>,
"aik@amd.com" <aik@amd.com>,
"yilun.xu@linux.intel.com" <yilun.xu@linux.intel.com>
Subject: Re: [RFC PATCH 06/15] virt: tdx-guest: Support TDI bind and unbind operations
Date: Tue, 3 Nov 2026 21:07:47 +0000 [thread overview]
Message-ID: <a63e7dbdba277b5a551ec74d09144e97f55504dc.camel@intel.com> (raw)
In-Reply-To: <IA3PR11MB9136FEF30F06D8D5118B389292692@IA3PR11MB9136.namprd11.prod.outlook.com>
On Tue, 2026-11-03 at 08:49 +0000, Duan, Zhenzhong wrote:
>
> > -----Original Message-----
> > From: Edgecombe, Rick P <rick.p.edgecombe@intel.com>
> > On Thu, 2026-10-29 at 03:26 +0000, Duan, Zhenzhong wrote:
> > > I want to discuss this further.
> > >
> > > If the TSM driver successfully locks a device but later fails to unlock
> > it,
> >
> > Can you explain some concrete scenarios where this would happen? We can
> > think
> > about whether it is required for an initial minimal set that does something
> > useful.
>
> I can think of some rare cases: the TDCM hypercall may return an error(e.g., a messing VMM or TDI device firmware),
>
I'm not clear whose fault this is.
> or TDCM hypercall polling timeout(e.g., heavy load in host).
Heavy load in the host leads to broken flag being set? This is pretty similar to
the issues around the BUSY errors. You really need to think through how this is
all going to work.
next prev parent reply other threads:[~2026-11-03 21:07 UTC|newest]
Thread overview: 104+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-24 4:10 [RFC PATCH 00/15] PCI/TSM: coco/tdx-guest: Implement TDX-Connect PCIe TDISP (phase2) Zhenzhong Duan
2026-09-24 4:10 ` [RFC PATCH 01/15] x86/tdx: Export tdg_vm_rd() for tdx-guest module Zhenzhong Duan
2026-09-30 22:13 ` Peter Fang
2026-10-01 12:38 ` Xu Yilun
2026-10-08 6:45 ` Duan, Zhenzhong
2026-10-08 16:30 ` Edgecombe, Rick P
2026-09-24 4:10 ` [RFC PATCH 02/15] x86/tdx: Add TDCM hypercall wrapper for TDX Connect Zhenzhong Duan
2026-10-13 14:34 ` Nikolay Borisov
2026-10-14 6:19 ` Duan, Zhenzhong
2026-10-14 6:27 ` Nikolay Borisov
2026-10-14 7:22 ` Duan, Zhenzhong
2026-10-26 0:33 ` Xiaoyao Li
2026-10-27 3:28 ` Duan, Zhenzhong
2026-10-27 5:49 ` Xiaoyao Li
2026-10-27 6:08 ` Duan, Zhenzhong
2026-10-29 2:15 ` Xiaoyao Li
2026-10-29 7:34 ` Duan, Zhenzhong
2026-09-24 4:10 ` [RFC PATCH 03/15] x86/tdx: Add TDG.TDI.RD module call " Zhenzhong Duan
2026-09-25 0:06 ` Edgecombe, Rick P
2026-10-08 6:27 ` Duan, Zhenzhong
2026-10-08 16:42 ` Edgecombe, Rick P
2026-10-09 2:28 ` Duan, Zhenzhong
2026-10-26 0:51 ` Xiaoyao Li
2026-10-27 6:22 ` Duan, Zhenzhong
2026-11-02 21:07 ` Edgecombe, Rick P
2026-11-03 13:11 ` Duan, Zhenzhong
2026-11-03 21:04 ` Edgecombe, Rick P
2026-09-24 4:10 ` [RFC PATCH 04/15] virt: tdx-guest: Support devsec TSM for secure devices Zhenzhong Duan
2026-10-15 13:42 ` Xu Yilun
2026-10-16 6:42 ` Duan, Zhenzhong
2026-10-26 1:12 ` Xiaoyao Li
2026-10-27 7:20 ` Duan, Zhenzhong
2026-09-24 4:10 ` [RFC PATCH 05/15] virt: tdx-guest: Add TDCM helpers and TEE-IO support check Zhenzhong Duan
2026-10-13 14:31 ` Nikolay Borisov
2026-10-14 6:11 ` Duan, Zhenzhong
2026-10-26 1:26 ` Xiaoyao Li
2026-10-26 7:13 ` Nikolay Borisov
2026-10-28 5:42 ` Duan, Zhenzhong
2026-10-28 6:51 ` Nikolay Borisov
2026-10-14 12:52 ` Nikolay Borisov
2026-10-15 6:24 ` Duan, Zhenzhong
2026-10-26 2:06 ` Xiaoyao Li
2026-10-27 8:32 ` Duan, Zhenzhong
2026-10-29 2:27 ` Xiaoyao Li
2026-09-24 4:10 ` [RFC PATCH 06/15] virt: tdx-guest: Support TDI bind and unbind operations Zhenzhong Duan
2026-10-13 12:10 ` Nikolay Borisov
2026-10-14 3:06 ` Duan, Zhenzhong
2026-10-14 6:32 ` Nikolay Borisov
2026-10-14 7:33 ` Duan, Zhenzhong
2026-10-17 18:38 ` Nikolay Borisov
2026-10-19 2:16 ` Duan, Zhenzhong
2026-10-26 2:32 ` Xiaoyao Li
2026-10-27 8:58 ` Duan, Zhenzhong
2026-10-29 2:38 ` Xiaoyao Li
2026-10-29 7:42 ` Duan, Zhenzhong
2026-10-29 3:26 ` Duan, Zhenzhong
2026-11-02 21:11 ` Edgecombe, Rick P
2026-11-03 8:49 ` Duan, Zhenzhong
2026-11-03 21:07 ` Edgecombe, Rick P [this message]
2026-10-26 2:38 ` Xiaoyao Li
2026-10-27 10:14 ` Duan, Zhenzhong
2026-11-02 21:15 ` Edgecombe, Rick P
2026-11-03 6:02 ` Duan, Zhenzhong
2026-09-24 4:10 ` [RFC PATCH 07/15] PCI/TSM: Track Device Interface Report MMIO range index Zhenzhong Duan
2026-10-26 2:45 ` Xiaoyao Li
2026-10-27 9:11 ` Duan, Zhenzhong
2026-09-24 4:10 ` [RFC PATCH 08/15] x86/tdx: Add TDG.MMIO.ACCEPT module call wrapper for TDX Connect Zhenzhong Duan
2026-09-24 23:41 ` Edgecombe, Rick P
2026-09-25 0:02 ` Edgecombe, Rick P
2026-10-08 6:01 ` Duan, Zhenzhong
2026-10-08 16:47 ` Edgecombe, Rick P
2026-10-08 5:49 ` Duan, Zhenzhong
2026-10-08 16:44 ` Edgecombe, Rick P
2026-10-09 2:16 ` Duan, Zhenzhong
2026-11-03 7:48 ` Xiaoyao Li
2026-09-24 4:10 ` [RFC PATCH 09/15] virt: tdx-guest: Capture the TDI report during device lock Zhenzhong Duan
2026-10-26 5:04 ` Xiaoyao Li
2026-10-28 3:23 ` Duan, Zhenzhong
2026-11-02 21:19 ` Edgecombe, Rick P
2026-11-03 0:36 ` Jason Gunthorpe
2026-11-03 0:48 ` Edgecombe, Rick P
2026-11-03 1:26 ` Jason Gunthorpe
2026-11-03 21:11 ` Edgecombe, Rick P
2026-09-24 4:10 ` [RFC PATCH 10/15] virt: tdx-guest: Set up and accept private MMIO ranges Zhenzhong Duan
2026-10-26 5:22 ` Xiaoyao Li
2026-10-28 3:32 ` Duan, Zhenzhong
2026-10-29 2:44 ` Xiaoyao Li
2026-10-29 9:56 ` Duan, Zhenzhong
2026-11-02 22:38 ` Edgecombe, Rick P
2026-09-24 4:10 ` [RFC PATCH 11/15] x86/tdx: Add TDG.TDI.START module call wrapper for TDX Connect Zhenzhong Duan
2026-09-24 4:10 ` [RFC PATCH 12/15] virt: tdx-guest: Support Trust Device Interface (TDI) activation Zhenzhong Duan
2026-10-26 7:19 ` Xiaoyao Li
2026-10-28 6:44 ` Duan, Zhenzhong
2026-10-28 12:41 ` Jason Gunthorpe
2026-10-29 2:24 ` Duan, Zhenzhong
2026-09-24 4:10 ` [RFC PATCH 13/15] x86/tdx: Add __tdcall_saved() helper Zhenzhong Duan
2026-10-26 7:35 ` Xiaoyao Li
2026-09-24 4:10 ` [RFC PATCH 14/15] x86/tdx: Add TDG.DMAR.ACCEPT module call wrapper for TDX Connect Zhenzhong Duan
2026-10-26 7:39 ` Xiaoyao Li
2026-10-28 5:57 ` Duan, Zhenzhong
2026-09-24 4:10 ` [RFC PATCH 15/15] virt: tdx-guest: Accept default DMAR entry during PCI driver attach Zhenzhong Duan
2026-10-26 7:49 ` Xiaoyao Li
2026-10-26 12:02 ` Jason Gunthorpe
2026-10-28 9:39 ` Xu Yilun
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=a63e7dbdba277b5a551ec74d09144e97f55504dc.camel@intel.com \
--to=rick.p.edgecombe@intel.com \
--cc=aik@amd.com \
--cc=aneesh.kumar@kernel.org \
--cc=bp@alien8.de \
--cc=chao.gao@intel.com \
--cc=chao.p.peng@intel.com \
--cc=dave.hansen@intel.com \
--cc=dave.hansen@linux.intel.com \
--cc=hpa@zytor.com \
--cc=jgg@nvidia.com \
--cc=kas@kernel.org \
--cc=kevin.tian@intel.com \
--cc=linux-coco@lists.linux.dev \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=nicolinc@nvidia.com \
--cc=nik.borisov@suse.com \
--cc=pbonzini@redhat.com \
--cc=seanjc@google.com \
--cc=tglx@kernel.org \
--cc=vishal.l.verma@intel.com \
--cc=x86@kernel.org \
--cc=xiaoyao.li@intel.com \
--cc=yilun.xu@linux.intel.com \
--cc=zhenzhong.duan@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®