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The Linux kernel configuration item CONFIG_VIRTIO_VFIO_PCI
:
CONFIG_VIRTIO_PCI && CONFIG_VIRTIO_PCI_ADMIN_LEGACY
virtio-vfio-pci
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.
Numeric ID (from LKDDb) and names (from pci.ids) of recognized devices:
1af4
("Red Hat, Inc."), device: 1041
("Virtio 1.0 network device")Raw data from LKDDb:
lkddb module virtio-vfio-pci CONFIG_VIRTIO_VFIO_PCI : drivers/vfio/pci/virtio/Kconfig : "VFIO support for VIRTIO NET PCI devices" # in 6.8–6.10, 6.11-rc+HEAD
lkddb pci 1af4 1041 .... .... ...... : CONFIG_VFIO CONFIG_VFIO_PCI_CORE CONFIG_VIRTIO_VFIO_PCI : drivers/vfio/pci/virtio/main.c # in 6.8–6.10, 6.11-rc+HEAD
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Automatically generated (in year 2024). See also LKDDb sources on GitLab