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_RPMSG 6 or CONFIG_S390_GUEST. 7 8menuconfig VIRTIO_MENU 9 bool "Virtio drivers" 10 default y 11 12if VIRTIO_MENU 13 14config VIRTIO_PCI 15 tristate "PCI driver for virtio devices" 16 depends on PCI 17 select VIRTIO 18 ---help--- 19 This driver provides support for virtio based paravirtual device 20 drivers over PCI. This requires that your VMM has appropriate PCI 21 virtio backends. Most QEMU based VMMs should support these devices 22 (like KVM or Xen). 23 24 If unsure, say M. 25 26config VIRTIO_PCI_LEGACY 27 bool "Support for legacy virtio draft 0.9.X and older devices" 28 default y 29 depends on VIRTIO_PCI 30 ---help--- 31 Virtio PCI Card 0.9.X Draft (circa 2014) and older device support. 32 33 This option enables building a transitional driver, supporting 34 both devices conforming to Virtio 1 specification, and legacy devices. 35 If disabled, you get a slightly smaller, non-transitional driver, 36 with no legacy compatibility. 37 38 So look out into your driveway. Do you have a flying car? If 39 so, you can happily disable this option and virtio will not 40 break. Otherwise, leave it set. Unless you're testing what 41 life will be like in The Future. 42 43 If unsure, say Y. 44 45config VIRTIO_BALLOON 46 tristate "Virtio balloon driver" 47 depends on VIRTIO 48 select MEMORY_BALLOON 49 ---help--- 50 This driver supports increasing and decreasing the amount 51 of memory within a KVM guest. 52 53 If unsure, say M. 54 55config VIRTIO_INPUT 56 tristate "Virtio input driver" 57 depends on VIRTIO 58 depends on INPUT 59 ---help--- 60 This driver supports virtio input devices such as 61 keyboards, mice and tablets. 62 63 If unsure, say M. 64 65 config VIRTIO_MMIO 66 tristate "Platform bus driver for memory mapped virtio devices" 67 depends on HAS_IOMEM && HAS_DMA 68 select VIRTIO 69 ---help--- 70 This drivers provides support for memory mapped virtio 71 platform device driver. 72 73 If unsure, say N. 74 75config VIRTIO_MMIO_CMDLINE_DEVICES 76 bool "Memory mapped virtio devices parameter parsing" 77 depends on VIRTIO_MMIO 78 ---help--- 79 Allow virtio-mmio devices instantiation via the kernel command line 80 or module parameters. Be aware that using incorrect parameters (base 81 address in particular) can crash your system - you have been warned. 82 See Documentation/admin-guide/kernel-parameters.rst for details. 83 84 If unsure, say 'N'. 85 86endif # VIRTIO_MENU 87