From: Jason Gunthorpe <jgg@nvidia.com>
To: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Xu Yilun <yilun.xu@linux.intel.com>,
"Aneesh Kumar K.V" <aneesh.kumar@kernel.org>,
Alexey Kardashevskiy <aik@amd.com>,
Dan Williams <dan.j.williams@intel.com>,
linux-coco@lists.linux.dev, linux-pci@vger.kernel.org,
gregkh@linuxfoundation.org, lukas@wunner.de, sameo@rivosinc.com,
zhiw@nvidia.com
Subject: Re: [RFC PATCH 3/3] iommufd/tsm: Add tsm_bind/unbind iommufd ioctls
Date: Mon, 9 Jun 2025 15:07:25 -0300 [thread overview]
Message-ID: <20250609180725.GA543171@nvidia.com> (raw)
In-Reply-To: <0e313cc0-b673-4d13-ab22-741c7fde39df@arm.com>
On Mon, Jun 09, 2025 at 05:42:59PM +0100, Suzuki K Poulose wrote:
> May be this is answered/discussed already, but why can't we use (vfio->fd,
> offset) similar to the gmem_fd for KVM memory slot ? VFIO could prevent mmap
> if the device is bound and also pervent bind, when there is a mapping ?
This creates a mess of circular dependencies where kvm and vfio are
both needing to hold references on each other's FDs.
Jason
next prev parent reply other threads:[~2025-06-09 18:07 UTC|newest]
Thread overview: 173+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-16 5:47 [PATCH v3 00/13] PCI/TSM: Core infrastructure for PCI device security (TDISP) Dan Williams
2025-05-16 5:47 ` [PATCH v3 01/13] coco/tsm: Introduce a core device for TEE Security Managers Dan Williams
2025-06-02 13:18 ` Jason Gunthorpe
2025-06-04 0:42 ` Dan Williams
2025-06-04 1:15 ` Dan Williams
2025-06-04 12:15 ` Jason Gunthorpe
2025-06-04 12:14 ` Jason Gunthorpe
2025-06-06 3:33 ` Alexey Kardashevskiy
2025-06-06 2:09 ` Alexey Kardashevskiy
2025-05-16 5:47 ` [PATCH v3 02/13] PCI/IDE: Enumerate Selective Stream IDE capabilities Dan Williams
2025-06-17 12:16 ` Jonathan Cameron
2025-07-12 22:31 ` dan.j.williams
2025-05-16 5:47 ` [PATCH v3 03/13] PCI/TSM: Authenticate devices via platform TSM Dan Williams
2025-05-21 15:32 ` Aneesh Kumar K.V
2025-06-03 19:53 ` Dan Williams
2025-06-04 8:04 ` Aneesh Kumar K.V
2025-06-17 12:51 ` Jonathan Cameron
2025-07-12 22:07 ` dan.j.williams
2025-08-26 1:31 ` Alexey Kardashevskiy
2025-08-26 23:54 ` dan.j.williams
2025-08-27 4:44 ` Alexey Kardashevskiy
2025-08-28 19:27 ` dan.j.williams
2025-08-26 3:08 ` Alexey Kardashevskiy
2025-08-26 23:58 ` dan.j.williams
2025-08-27 5:06 ` Alexey Kardashevskiy
2025-08-26 10:22 ` Alexey Kardashevskiy
2025-08-27 0:15 ` dan.j.williams
2025-08-27 5:02 ` Alexey Kardashevskiy
2025-08-28 19:32 ` dan.j.williams
2025-05-16 5:47 ` [PATCH v3 04/13] PCI: Enable host-bridge emulation for PCI_DOMAINS_GENERIC platforms Dan Williams
2025-05-16 5:47 ` [PATCH v3 05/13] PCI: vmd: Switch to pci_bus_find_emul_domain_nr() Dan Williams
2025-05-16 5:47 ` [PATCH v3 06/13] samples/devsec: Introduce a PCI device-security bus + endpoint sample Dan Williams
2025-06-17 13:30 ` Jonathan Cameron
2025-07-13 1:58 ` dan.j.williams
2025-05-16 5:47 ` [PATCH v3 07/13] PCI: Add PCIe Device 3 Extended Capability enumeration Dan Williams
2025-06-17 13:36 ` Jonathan Cameron
2025-05-16 5:47 ` [PATCH v3 08/13] PCI/IDE: Add IDE establishment helpers Dan Williams
2025-06-17 14:04 ` Jonathan Cameron
2025-07-14 18:25 ` dan.j.williams
2025-07-03 2:59 ` Alexey Kardashevskiy
2025-05-16 5:47 ` [PATCH v3 09/13] PCI/IDE: Report available IDE streams Dan Williams
2025-05-18 12:48 ` kernel test robot
2025-06-17 14:16 ` Jonathan Cameron
2025-07-14 20:16 ` dan.j.williams
2025-05-16 5:47 ` [PATCH v3 10/13] PCI/TSM: Report active " Dan Williams
2025-06-17 14:21 ` Jonathan Cameron
2025-07-14 20:49 ` dan.j.williams
2025-05-16 5:47 ` [PATCH v3 11/13] samples/devsec: Add sample IDE establishment Dan Williams
2025-06-17 14:26 ` Jonathan Cameron
2025-07-14 20:59 ` dan.j.williams
2025-05-16 5:47 ` [PATCH v3 12/13] PCI/TSM: support TDI related operations for host TSM driver Dan Williams
2025-05-16 6:52 ` Xu Yilun
2025-05-20 7:17 ` Aneesh Kumar K.V
2025-05-21 9:35 ` Xu Yilun
2025-05-26 5:05 ` Aneesh Kumar K.V
2025-05-26 7:52 ` Alexey Kardashevskiy
2025-05-26 15:44 ` Aneesh Kumar K.V
2025-05-27 1:01 ` Alexey Kardashevskiy
2025-05-27 11:48 ` Aneesh Kumar K.V
2025-05-27 13:06 ` Jason Gunthorpe
2025-05-27 14:26 ` Aneesh Kumar K.V
2025-05-27 14:45 ` Jason Gunthorpe
2025-05-28 12:17 ` Aneesh Kumar K.V
2025-05-28 16:42 ` Jason Gunthorpe
2025-05-28 16:52 ` Jason Gunthorpe
2025-05-29 9:30 ` Xu Yilun
2025-05-29 13:43 ` Aneesh Kumar K.V
2025-05-29 14:09 ` Jason Gunthorpe
2025-05-30 3:00 ` Alexey Kardashevskiy
2025-05-30 13:21 ` Jason Gunthorpe
2025-05-29 13:49 ` Xu Yilun
2025-05-29 14:05 ` Jason Gunthorpe
2025-05-29 3:03 ` Alexey Kardashevskiy
2025-05-29 13:34 ` Aneesh Kumar K.V
2025-05-29 13:37 ` [RFC PATCH 1/3] coco: tsm: Add tsm_bind/unbind helpers Aneesh Kumar K.V (Arm)
2025-05-29 13:37 ` [RFC PATCH 2/3] iommufd/viommu: Add support to associate viommu with kvm instance Aneesh Kumar K.V (Arm)
2025-05-29 14:13 ` Jason Gunthorpe
2025-05-29 13:37 ` [RFC PATCH 3/3] iommufd/tsm: Add tsm_bind/unbind iommufd ioctls Aneesh Kumar K.V (Arm)
2025-05-29 14:32 ` Jason Gunthorpe
2025-05-30 8:33 ` Aneesh Kumar K.V
2025-05-30 18:18 ` Jason Gunthorpe
2025-05-31 16:25 ` Xu Yilun
2025-06-02 4:52 ` Alexey Kardashevskiy
2025-06-02 17:17 ` Xu Yilun
2025-06-04 1:47 ` Alexey Kardashevskiy
2025-06-04 5:02 ` Xu Yilun
2025-06-04 12:37 ` Jason Gunthorpe
2025-06-06 15:40 ` Xu Yilun
2025-06-06 16:34 ` Jason Gunthorpe
2025-06-09 4:47 ` Xu Yilun
2025-06-02 11:08 ` Aneesh Kumar K.V
2025-06-02 16:25 ` Xu Yilun
2025-06-02 16:48 ` Jason Gunthorpe
2025-06-03 4:05 ` Xu Yilun
2025-06-03 12:11 ` Jason Gunthorpe
2025-06-04 5:58 ` Xu Yilun
2025-06-04 12:36 ` Jason Gunthorpe
2025-06-05 3:05 ` Xu Yilun
2025-06-10 7:05 ` Alexey Kardashevskiy
2025-06-10 18:19 ` Jason Gunthorpe
2025-06-11 1:26 ` Alexey Kardashevskiy
2025-06-10 4:47 ` Alexey Kardashevskiy
2025-06-10 18:21 ` Jason Gunthorpe
2025-06-12 4:15 ` Xu Yilun
2025-06-03 5:00 ` Aneesh Kumar K.V
2025-06-03 10:50 ` Xu Yilun
2025-06-03 12:14 ` Jason Gunthorpe
2025-06-04 5:31 ` Xu Yilun
2025-06-04 12:31 ` Jason Gunthorpe
2025-06-05 3:25 ` Xu Yilun
2025-06-05 14:54 ` Jason Gunthorpe
2025-06-09 6:10 ` Xu Yilun
2025-06-09 16:42 ` Suzuki K Poulose
2025-06-09 18:07 ` Jason Gunthorpe [this message]
2025-06-10 7:31 ` Alexey Kardashevskiy
2025-06-12 5:44 ` Xu Yilun
2025-06-03 12:18 ` Jason Gunthorpe
2025-06-04 1:06 ` Dan Williams
2025-06-04 12:18 ` Jason Gunthorpe
2025-06-02 12:47 ` Jason Gunthorpe
2025-06-03 3:47 ` Xu Yilun
2025-06-03 12:08 ` Jason Gunthorpe
2025-06-04 6:39 ` Xu Yilun
2025-06-04 12:39 ` Jason Gunthorpe
2025-06-05 1:56 ` Xu Yilun
2025-07-15 10:29 ` Xu Yilun
2025-07-15 13:09 ` Jason Gunthorpe
2025-07-16 15:41 ` Xu Yilun
2025-07-16 16:31 ` Jason Gunthorpe
2025-07-17 8:28 ` Xu Yilun
2025-07-17 12:43 ` Jason Gunthorpe
2025-07-18 9:15 ` Xu Yilun
2025-07-18 12:26 ` Jason Gunthorpe
2025-07-20 2:37 ` Xu Yilun
2025-05-30 2:44 ` [PATCH v3 12/13] PCI/TSM: support TDI related operations for host TSM driver Alexey Kardashevskiy
2025-05-27 10:25 ` Suzuki K Poulose
2025-06-03 22:47 ` Dan Williams
2025-06-04 1:35 ` Alexey Kardashevskiy
2025-06-04 1:52 ` Dan Williams
2025-06-04 1:54 ` Dan Williams
2025-06-05 10:56 ` Alexey Kardashevskiy
2025-06-07 1:56 ` Dan Williams
2025-06-11 4:40 ` Alexey Kardashevskiy
2025-06-13 3:06 ` Dan Williams
2025-06-03 22:40 ` Dan Williams
2025-05-19 10:20 ` Alexey Kardashevskiy
2025-05-20 20:12 ` Dan Williams
2025-05-21 9:28 ` Xu Yilun
2025-05-26 8:08 ` Alexey Kardashevskiy
2025-05-29 14:20 ` Xu Yilun
2025-05-30 2:54 ` Alexey Kardashevskiy
2025-05-31 15:26 ` Xu Yilun
2025-06-02 4:51 ` Alexey Kardashevskiy
2025-06-02 18:51 ` Xu Yilun
2025-06-03 19:12 ` Dan Williams
2025-07-07 7:17 ` Aneesh Kumar K.V
2025-05-20 5:20 ` Aneesh Kumar K.V
2025-05-20 21:12 ` Dan Williams
2025-05-16 5:47 ` [PATCH v3 13/13] PCI/TSM: Add Guest TSM Support Dan Williams
2025-05-19 10:20 ` Alexey Kardashevskiy
2025-05-20 21:11 ` Dan Williams
2025-05-22 4:07 ` Alexey Kardashevskiy
2025-06-03 22:26 ` Dan Williams
2025-06-03 22:33 ` Jason Gunthorpe
2025-06-10 8:31 ` Alexey Kardashevskiy
2025-07-11 23:04 ` dan.j.williams
2025-05-20 9:25 ` Aneesh Kumar K.V
2025-05-20 21:27 ` Dan Williams
2025-05-20 11:00 ` Aneesh Kumar K.V
2025-05-20 21:31 ` Dan Williams
2025-06-03 19:07 ` Dan Williams
2025-05-21 15:03 ` Xu Yilun
2025-06-03 19:20 ` Dan Williams
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