| # 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. |