Support for the VFIO cdev /dev/vfio/devices/vfioX
configname: CONFIG_VFIO_DEVICE_CDEV
Linux Kernel Configuration
└─>Device Drivers
└─>VFIO Non-Privileged userspace driver framework
└─>Support for the VFIO cdev /dev/vfio/devices/vfioX
In linux kernel since version 4.14.327 (release Date: 2023-10-10)
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.
If you don't know what to do here, say N.
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.
If you don't know what to do here, say N.