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_LGUEST,
   6           CONFIG_RPMSG or CONFIG_S390_GUEST.
   7
   8 menu "Virtio drivers"
   9
  10 config 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
  22 config 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
  41 config 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
  51 config 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
  71 config 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/admin-guide/kernel-parameters.rst for details.
  79
  80          If unsure, say 'N'.
  81
  82 endmenu