config PVDMA
       bool "Paravirtualized DMA Operation"
       depends on HAS_DMA && VIRTIO_MMIO_DRAGONBALL
       depends on VIRTIO_MMIO
       default y
       help
         This driver supports Dragonball pvDMA device which is a memory mapped
         device performing on-demand memory mapping/pinning for VFIO device
         assignment.
