Eric Lee / smarc-fsl-linux-kernel

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drivers/virtio/Kconfig 2.38 KB
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81f7e3824   Eric Lee   Initial Release, ... 
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  config VIRTIO
  	tristate
  	---help---
  	  This option is selected by any driver which implements the virtio
  	  bus, such as CONFIG_VIRTIO_PCI, CONFIG_VIRTIO_MMIO, CONFIG_RPMSG
  	  or CONFIG_S390_GUEST.
  
  menu "Virtio drivers"
  
  config VIRTIO_PCI
  	tristate "PCI driver for virtio devices"
  	depends on PCI
  	select VIRTIO
  	---help---
  	  This driver provides support for virtio based paravirtual device
  	  drivers over PCI.  This requires that your VMM has appropriate PCI
  	  virtio backends.  Most QEMU based VMMs should support these devices
  	  (like KVM or Xen).
  
  	  If unsure, say M.
  
  config VIRTIO_PCI_LEGACY
  	bool "Support for legacy virtio draft 0.9.X and older devices"
  	default y
  	depends on VIRTIO_PCI
  	---help---
            Virtio PCI Card 0.9.X Draft (circa 2014) and older device support.
  
  	  This option enables building a transitional driver, supporting
  	  both devices conforming to Virtio 1 specification, and legacy devices.
  	  If disabled, you get a slightly smaller, non-transitional driver,
  	  with no legacy compatibility.
  
            So look out into your driveway.  Do you have a flying car?  If
            so, you can happily disable this option and virtio will not
            break.  Otherwise, leave it set.  Unless you're testing what
            life will be like in The Future.
  
  	  If unsure, say Y.
  
  config VIRTIO_BALLOON
  	tristate "Virtio balloon driver"
  	depends on VIRTIO
  	select MEMORY_BALLOON
  	---help---
  	 This driver supports increasing and decreasing the amount
  	 of memory within a KVM guest.
  
  	 If unsure, say M.
  
  config VIRTIO_INPUT
  	tristate "Virtio input driver"
  	depends on VIRTIO
  	depends on INPUT
  	---help---
  	 This driver supports virtio input devices such as
  	 keyboards, mice and tablets.
  
  	 If unsure, say M.
  
   config VIRTIO_MMIO
  	tristate "Platform bus driver for memory mapped virtio devices"
  	depends on HAS_IOMEM && HAS_DMA
   	select VIRTIO
   	---help---
   	 This drivers provides support for memory mapped virtio
  	 platform device driver.
  
   	 If unsure, say N.
  
  config VIRTIO_MMIO_CMDLINE_DEVICES
  	bool "Memory mapped virtio devices parameter parsing"
  	depends on VIRTIO_MMIO
  	---help---
  	 Allow virtio-mmio devices instantiation via the kernel command line
  	 or module parameters. Be aware that using incorrect parameters (base
  	 address in particular) can crash your system - you have been warned.
  	 See Documentation/admin-guide/kernel-parameters.rst for details.
  
  	 If unsure, say 'N'.
  
  endmenu