Kconfig 2.4 KB

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