1config VIRTIO 2 tristate 3 ---help--- 4 This option is selected by any driver which implements the virtio 5 bus, such as CONFIG_VIRTIO_PCI, CONFIG_VIRTIO_MMIO, CONFIG_LGUEST, 6 CONFIG_RPMSG or CONFIG_S390_GUEST. 7 8menu "Virtio drivers" 9 10config VIRTIO_PCI 11 tristate "PCI driver for virtio devices" 12 depends on PCI 13 select VIRTIO 14 ---help--- 15 This driver provides support for virtio based paravirtual device 16 drivers over PCI. This requires that your VMM has appropriate PCI 17 virtio backends. Most QEMU based VMMs should support these devices 18 (like KVM or Xen). 19 20 If unsure, say M. 21 22config VIRTIO_PCI_LEGACY 23 bool "Support for legacy virtio draft 0.9.X and older devices" 24 default y 25 depends on VIRTIO_PCI 26 ---help--- 27 Virtio PCI Card 0.9.X Draft (circa 2014) and older device support. 28 29 This option enables building a transitional driver, supporting 30 both devices conforming to Virtio 1 specification, and legacy devices. 31 If disabled, you get a slightly smaller, non-transitional driver, 32 with no legacy compatibility. 33 34 So look out into your driveway. Do you have a flying car? If 35 so, you can happily disable this option and virtio will not 36 break. Otherwise, leave it set. Unless you're testing what 37 life will be like in The Future. 38 39 If unsure, say Y. 40 41config VIRTIO_BALLOON 42 tristate "Virtio balloon driver" 43 depends on VIRTIO 44 select MEMORY_BALLOON 45 ---help--- 46 This driver supports increasing and decreasing the amount 47 of memory within a KVM guest. 48 49 If unsure, say M. 50 51config VIRTIO_INPUT 52 tristate "Virtio input driver" 53 depends on VIRTIO 54 depends on INPUT 55 ---help--- 56 This driver supports virtio input devices such as 57 keyboards, mice and tablets. 58 59 If unsure, say M. 60 61 config VIRTIO_MMIO 62 tristate "Platform bus driver for memory mapped virtio devices" 63 depends on HAS_IOMEM && HAS_DMA 64 select VIRTIO 65 ---help--- 66 This drivers provides support for memory mapped virtio 67 platform device driver. 68 69 If unsure, say N. 70 71config VIRTIO_MMIO_CMDLINE_DEVICES 72 bool "Memory mapped virtio devices parameter parsing" 73 depends on VIRTIO_MMIO 74 ---help--- 75 Allow virtio-mmio devices instantiation via the kernel command line 76 or module parameters. Be aware that using incorrect parameters (base 77 address in particular) can crash your system - you have been warned. 78 See Documentation/kernel-parameters.txt for details. 79 80 If unsure, say 'N'. 81 82endmenu 83