[PATCH v1 05/16] iommufd/viommu: Add IOMMU_VIOMMU_SET/UNSET_VDEV_ID ioctl
Jason Gunthorpe
jgg at nvidia.com
Wed Aug 14 15:02:21 PDT 2024
On Wed, Aug 14, 2024 at 10:09:22AM -0700, Nicolin Chen wrote:
> This helps us to build a device-based virq report function:
> +void iommufd_device_report_virq(struct device *dev, unsigned int data_type,
> + void *data_ptr, size_t data_len);
>
> I built a link from device to viommu reusing Baolu's work:
> struct device -> struct iommu_group -> struct iommu_attach_handle
> -> struct iommufd_attach_handle -> struct iommufd_device (idev)
> -> struct iommufd_vdev_id (idev->vdev_id)
That makes sense, the vdev id would be 1:1 with the struct device, and
the iommufd_device is also supposed to be 1:1 with the struct device.
Jason
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