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# SPDX-License-Identifier: GPL-2.0-only
config VIRTIO_VFIO_PCI
tristate "VFIO support for VIRTIO NET PCI devices"
depends on VIRTIO_PCI && VIRTIO_PCI_ADMIN_LEGACY
select VFIO_PCI_CORE
help
This provides support for exposing VIRTIO NET VF devices which support
legacy IO access, using the VFIO framework that can work with a legacy
virtio driver in the guest.
Based on PCIe spec, VFs do not support I/O Space.
As of that this driver emulates I/O BAR in software to let a VF be
seen as a transitional device by its users and let it work with
a legacy driver.
If you don't know what to do here, say N.
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