| # SPDX-License-Identifier: GPL-2.0-only |
| config VIRTIO_VFIO_PCI |
| tristate "VFIO support for VIRTIO PCI VF devices" |
| depends on VIRTIO_PCI |
| select VFIO_PCI_CORE |
| help |
| This provides migration support for VIRTIO NET and BLOCK PCI VF |
| devices using the VFIO framework. Migration support requires the |
| SR-IOV PF device to support specific VIRTIO extensions, |
| otherwise this driver provides no additional functionality |
| beyond vfio-pci. |
| |
| Migration support in this driver relies on dirty page tracking |
| provided by the IOMMU hardware and exposed through IOMMUFD, any |
| other use cases are dis-recommended. |
| |
| If you don't know what to do here, say N. |
| |
| config VIRTIO_VFIO_PCI_ADMIN_LEGACY |
| bool "Legacy I/O support for VIRTIO NET PCI VF devices" |
| depends on VIRTIO_VFIO_PCI && VIRTIO_PCI_ADMIN_LEGACY |
| default y |
| help |
| This extends the virtio-vfio-pci driver to support legacy I/O |
| access, allowing use of legacy virtio drivers with VIRTIO NET |
| PCI VF devices. Legacy I/O support requires the SR-IOV PF |
| device to support and enable specific VIRTIO extensions, |
| otherwise this driver provides no additional functionality |
| beyond vfio-pci. |
| |
| If you don't know what to do here, say N. |
