| config VIRTIO |
| tristate |
| ---help--- |
| This option is selected by any driver which implements the virtio |
| bus, such as CONFIG_VIRTIO_PCI, CONFIG_VIRTIO_MMIO, CONFIG_LGUEST, |
| CONFIG_RPMSG or CONFIG_S390_GUEST. |
| |
| menu "Virtio drivers" |
| |
| config VIRTIO_PCI |
| tristate "PCI driver for virtio devices" |
| depends on PCI |
| select VIRTIO |
| ---help--- |
| This driver provides support for virtio based paravirtual device |
| drivers over PCI. This requires that your VMM has appropriate PCI |
| virtio backends. Most QEMU based VMMs should support these devices |
| (like KVM or Xen). |
| |
| If unsure, say M. |
| |
| config VIRTIO_PCI_LEGACY |
| bool "Support for legacy virtio draft 0.9.X and older devices" |
| default y |
| depends on VIRTIO_PCI |
| ---help--- |
| Virtio PCI Card 0.9.X Draft (circa 2014) and older device support. |
| |
| This option enables building a transitional driver, supporting |
| both devices conforming to Virtio 1 specification, and legacy devices. |
| If disabled, you get a slightly smaller, non-transitional driver, |
| with no legacy compatibility. |
| |
| So look out into your driveway. Do you have a flying car? If |
| so, you can happily disable this option and virtio will not |
| break. Otherwise, leave it set. Unless you're testing what |
| life will be like in The Future. |
| |
| If unsure, say Y. |
| |
| config VIRTIO_BALLOON |
| tristate "Virtio balloon driver" |
| depends on VIRTIO |
| select MEMORY_BALLOON |
| ---help--- |
| This driver supports increasing and decreasing the amount |
| of memory within a KVM guest. |
| |
| If unsure, say M. |
| |
| config VIRTIO_INPUT |
| tristate "Virtio input driver" |
| depends on VIRTIO |
| depends on INPUT |
| ---help--- |
| This driver supports virtio input devices such as |
| keyboards, mice and tablets. |
| |
| If unsure, say M. |
| |
| config VIRTIO_MMIO |
| tristate "Platform bus driver for memory mapped virtio devices" |
| depends on HAS_IOMEM && HAS_DMA |
| select VIRTIO |
| ---help--- |
| This drivers provides support for memory mapped virtio |
| platform device driver. |
| |
| If unsure, say N. |
| |
| config VIRTIO_MMIO_CMDLINE_DEVICES |
| bool "Memory mapped virtio devices parameter parsing" |
| depends on VIRTIO_MMIO |
| ---help--- |
| Allow virtio-mmio devices instantiation via the kernel command line |
| or module parameters. Be aware that using incorrect parameters (base |
| address in particular) can crash your system - you have been warned. |
| See Documentation/kernel-parameters.txt for details. |
| |
| If unsure, say 'N'. |
| |
| endmenu |
