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CONFIG_VFIO_DEVICE_CDEV: Support for the VFIO cdev /dev/vfio/devices/vfioX

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The Linux kernel configuration item CONFIG_VFIO_DEVICE_CDEV:

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The VFIO device cdev is another way for userspace to get device access. Userspace gets device fd by opening device cdev under /dev/vfio/devices/vfioX, and then bind the device fd with an iommufd to set up secure DMA context for device access. This interface does not support noiommu.

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Hardware

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