16 lines · plain
1# SPDX-License-Identifier: GPL-2.0-only2config VIRTIO_VFIO_PCI3 tristate "VFIO support for VIRTIO NET PCI devices"4 depends on VIRTIO_PCI && VIRTIO_PCI_ADMIN_LEGACY5 select VFIO_PCI_CORE6 help7 This provides support for exposing VIRTIO NET VF devices which support8 legacy IO access, using the VFIO framework that can work with a legacy9 virtio driver in the guest.10 Based on PCIe spec, VFs do not support I/O Space.11 As of that this driver emulates I/O BAR in software to let a VF be12 seen as a transitional device by its users and let it work with13 a legacy driver.14 15 If you don't know what to do here, say N.16