From: Jason Gunthorpe <jgg@ziepe.ca>
To: "Tian, Kevin" <kevin.tian@intel.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@kernel.org>,
Jacob Pan <jacob.pan@linux.microsoft.com>,
"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
Alex Williamson <alex@shazbot.org>,
Alexey Kardashevskiy <aik@amd.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Joerg Roedel <joro@8bytes.org>,
Jonathan Cameron <jic23@kernel.org>,
Jonathan Hunter <jonathanh@nvidia.com>,
Krishna Reddy <vdumpa@nvidia.com>, Lukas Wunner <lukas@wunner.de>,
Nicolin Chen <nicolinc@nvidia.com>,
Robin Murphy <robin.murphy@arm.com>,
Samuel Ortiz <sameo@rivosinc.com>,
Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>,
Steven Price <steven.price@arm.com>,
Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Thierry Reding <thierry.reding@kernel.org>,
Vasant Hegde <vasant.hegde@amd.com>,
Will Deacon <will@kernel.org>,
Xu Yilun <yilun.xu@linux.intel.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-coco@lists.linux.dev" <linux-coco@lists.linux.dev>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>
Subject: Re: [PATCH v7 08/16] iommufd/viommu: Keep a reference to the KVM file
Date: Fri, 30 Oct 2026 13:58:25 -0300 [thread overview]
Message-ID: <20261030165825.GE3889730@ziepe.ca> (raw)
In-Reply-To: <CO1PR11MB48351C4BD0BAD3BF6AFB2E0C8C6D2@CO1PR11MB4835.namprd11.prod.outlook.com>
On Fri, Oct 30, 2026 at 07:54:04AM +0000, Tian, Kevin wrote:
> Besides, it might be a good idea to return an error if idev->kvm_file is
> NULL in iommufd_viommu_alloc_ioctl(). I don't think the viommu logic
> is designed for native application...
That's probably going too far..
It should be possible to fully test most of the viommu stuff without
an actual kvm, for example.
Jason
next prev parent reply other threads:[~2026-10-30 16:58 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-08 5:59 [PATCH v7 00/16] iommufd: vIOMMUs and TSM guest requests for confidential guests Aneesh Kumar K.V (Arm)
2026-10-08 5:59 ` [PATCH v7 01/16] KVM: Introduce file_to_kvm_<arch>() infrastructure Aneesh Kumar K.V (Arm)
2026-10-08 5:59 ` [PATCH v7 02/16] KVM: Add file back-pointer to struct kvm Aneesh Kumar K.V (Arm)
2026-10-08 5:59 ` [PATCH v7 03/16] KVM: x86: Use file_to_kvm_x86() in SEV Aneesh Kumar K.V (Arm)
2026-10-08 5:59 ` [PATCH v7 04/16] KVM/vfio: Use file-based reference counting for KVM Aneesh Kumar K.V (Arm)
2026-10-08 5:59 ` [PATCH v7 05/16] KVM: Restrict kvm_get_kvm/kvm_put_kvm export to internal KVM modules Aneesh Kumar K.V (Arm)
2026-10-08 5:59 ` [PATCH v7 06/16] KVM: Remove unused file_is_kvm Aneesh Kumar K.V (Arm)
2026-10-08 5:59 ` [PATCH v7 07/16] iommufd/device: Associate KVM file pointer with iommufd_device Aneesh Kumar K.V (Arm)
2026-10-08 5:59 ` [PATCH v7 08/16] iommufd/viommu: Keep a reference to the KVM file Aneesh Kumar K.V (Arm)
2026-10-14 17:59 ` Jacob Pan
2026-10-29 6:26 ` Aneesh Kumar K.V
2026-10-30 7:54 ` Tian, Kevin
2026-10-30 16:58 ` Jason Gunthorpe [this message]
2026-10-28 19:07 ` Jason Gunthorpe
2026-10-08 5:59 ` [PATCH v7 09/16] tsm: Remove the device from lookup before PCI teardown Aneesh Kumar K.V (Arm)
2026-10-28 19:07 ` Jason Gunthorpe
2026-10-29 6:56 ` Aneesh Kumar K.V
2026-10-08 5:59 ` [PATCH v7 10/16] iommufd: Add the vdevice TSM request ioctl Aneesh Kumar K.V (Arm)
2026-10-28 19:07 ` Jason Gunthorpe
2026-10-29 9:37 ` Aneesh Kumar K.V
2026-10-29 13:01 ` Jason Gunthorpe
2026-10-30 7:41 ` Tian, Kevin
2026-10-30 15:18 ` Jason Gunthorpe
2026-10-08 5:59 ` [PATCH v7 11/16] PCI/TSM: Remove the legacy guest request interface Aneesh Kumar K.V (Arm)
2026-10-28 19:07 ` Jason Gunthorpe
2026-10-08 5:59 ` [PATCH v7 12/16] PCI/TSM: Add vIOMMU-bound contexts for vdevices Aneesh Kumar K.V (Arm)
2026-10-28 19:07 ` Jason Gunthorpe
2026-10-08 5:59 ` [PATCH v7 13/16] iommufd/viommu: Select vIOMMU operations before allocation Aneesh Kumar K.V (Arm)
2026-10-28 19:07 ` Jason Gunthorpe
2026-10-29 8:21 ` Aneesh Kumar K.V
2026-10-29 12:43 ` Jason Gunthorpe
2026-10-08 5:59 ` [PATCH v7 14/16] iommufd/viommu: Allow PCI TSM backends to provide vIOMMU operations Aneesh Kumar K.V (Arm)
2026-10-28 19:07 ` Jason Gunthorpe
2026-10-08 5:59 ` [PATCH v7 15/16] iommufd: Allow vIOMMUs without a parent HWPT Aneesh Kumar K.V (Arm)
2026-10-28 19:07 ` Jason Gunthorpe
2026-10-08 5:59 ` [PATCH v7 16/16] PCI/TSM: wait for vdevice contexts before removing a DSM Aneesh Kumar K.V (Arm)
2026-10-12 20:34 ` Bjorn Helgaas
2026-10-28 19:07 ` Jason Gunthorpe
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