LXR linux/drivers/virtio/Kconfig

   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