From: Xiaoyao Li <xiaoyao.li@intel.com>
To: "Duan, Zhenzhong" <zhenzhong.duan@intel.com>,
Nikolay Borisov <nik.borisov@suse.com>,
"x86@kernel.org" <x86@kernel.org>,
"linux-coco@lists.linux.dev" <linux-coco@lists.linux.dev>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Cc: "dave.hansen@linux.intel.com" <dave.hansen@linux.intel.com>,
"tglx@kernel.org" <tglx@kernel.org>,
"mingo@redhat.com" <mingo@redhat.com>,
"bp@alien8.de" <bp@alien8.de>, "hpa@zytor.com" <hpa@zytor.com>,
"Hansen, Dave" <dave.hansen@intel.com>,
"kas@kernel.org" <kas@kernel.org>,
"Edgecombe, Rick P" <rick.p.edgecombe@intel.com>,
"jgg@nvidia.com" <jgg@nvidia.com>,
"nicolinc@nvidia.com" <nicolinc@nvidia.com>,
"aik@amd.com" <aik@amd.com>,
"aneesh.kumar@kernel.org" <aneesh.kumar@kernel.org>,
"seanjc@google.com" <seanjc@google.com>,
"pbonzini@redhat.com" <pbonzini@redhat.com>,
"yilun.xu@linux.intel.com" <yilun.xu@linux.intel.com>,
"Gao, Chao" <chao.gao@intel.com>,
"Verma, Vishal L" <vishal.l.verma@intel.com>,
"Tian, Kevin" <kevin.tian@intel.com>,
"Peng, Chao P" <chao.p.peng@intel.com>
Subject: Re: [RFC PATCH 06/15] virt: tdx-guest: Support TDI bind and unbind operations
Date: Thu, 29 Oct 2026 10:38:04 +0800 [thread overview]
Message-ID: <45327d29-e9fc-4b47-9145-9ae8e63042e0@intel.com> (raw)
In-Reply-To: <IA3PR11MB91368A7BCDAF146ECDC6A4CB92602@IA3PR11MB9136.namprd11.prod.outlook.com>
On 10/27/2026 4:58 PM, Duan, Zhenzhong wrote:
>> Btw, for TDX specific tdx_devsec_unlock(), the WARN_ON() is not proper
>> IMHO.
>> the failure can happen for various reasons, and the WARN can be treated as
>> fatal
>> when panic_on_warn is true. I think pr_warn_ratelimit() would suffice?
> OK, but unlock() isn't a loop operation, I prefer to use pr_warn().
I think guest userspace can invoke unlock() in a writing sysfs loop?
If a device is not locked before, the unlock() will surely fail? If so, I think
we can drop the warn/WARN.
next prev parent reply other threads:[~2026-10-29 2:38 UTC|newest]
Thread overview: 89+ 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
2026-09-24 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 [this message]
2026-10-29 7:42 ` Duan, Zhenzhong
2026-10-29 3:26 ` Duan, Zhenzhong
2026-10-26 2:38 ` Xiaoyao Li
2026-10-27 10:14 ` 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
2026-09-24 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
2026-09-24 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
2026-09-24 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
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