drivers/virtio/Kconfig

   1 config 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
   8 menuconfig VIRTIO_MENU
   9         bool "Virtio drivers"
  10         default y
  11
  12 if VIRTIO_MENU
  13
  14 config 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
  26 config 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
  45 config 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
  55 config 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
  75 config 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
  86 endif # VIRTIO_MENU