drivers/vhost/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0-only
   2 config VHOST_IOTLB
   3         tristate
   4         help
   5           Generic IOTLB implementation for vhost and vringh.
   6           This option is selected by any driver which needs to support
   7           an IOMMU in software.
   8
   9 config VHOST_RING
  10         tristate
  11         select VHOST_IOTLB
  12         help
  13           This option is selected by any driver which needs to access
  14           the host side of a virtio ring.
  15
  16 config VHOST_DPN
  17         bool
  18         depends on !ARM || AEABI
  19         default y
  20         help
  21           Anything selecting VHOST or VHOST_RING must depend on VHOST_DPN.
  22           This excludes the deprecated ARM ABI since that forces a 4 byte
  23           alignment on all structs - incompatible with virtio spec requirements.
  24
  25 config VHOST
  26         tristate
  27         select VHOST_IOTLB
  28         help
  29           This option is selected by any driver which needs to access
  30           the core of vhost.
  31
  32 menuconfig VHOST_MENU
  33         bool "VHOST drivers"
  34         default y
  35
  36 if VHOST_MENU
  37
  38 config VHOST_NET
  39         tristate "Host kernel accelerator for virtio net"
  40         depends on NET && EVENTFD && (TUN || !TUN) && (TAP || !TAP) && VHOST_DPN
  41         select VHOST
  42         ---help---
  43           This kernel module can be loaded in host kernel to accelerate
  44           guest networking with virtio_net. Not to be confused with virtio_net
  45           module itself which needs to be loaded in guest kernel.
  46
  47           To compile this driver as a module, choose M here: the module will
  48           be called vhost_net.
  49
  50 config VHOST_SCSI
  51         tristate "VHOST_SCSI TCM fabric driver"
  52         depends on TARGET_CORE && EVENTFD && VHOST_DPN
  53         select VHOST
  54         default n
  55         ---help---
  56         Say M here to enable the vhost_scsi TCM fabric module
  57         for use with virtio-scsi guests
  58
  59 config VHOST_VSOCK
  60         tristate "vhost virtio-vsock driver"
  61         depends on VSOCKETS && EVENTFD && VHOST_DPN
  62         select VHOST
  63         select VIRTIO_VSOCKETS_COMMON
  64         default n
  65         ---help---
  66         This kernel module can be loaded in the host kernel to provide AF_VSOCK
  67         sockets for communicating with guests.  The guests must have the
  68         virtio_transport.ko driver loaded to use the virtio-vsock device.
  69
  70         To compile this driver as a module, choose M here: the module will be called
  71         vhost_vsock.
  72
  73 config VHOST_VDPA
  74         tristate "Vhost driver for vDPA-based backend"
  75         depends on EVENTFD && VHOST_DPN
  76         select VHOST
  77         depends on VDPA
  78         help
  79           This kernel module can be loaded in host kernel to accelerate
  80           guest virtio devices with the vDPA-based backends.
  81
  82           To compile this driver as a module, choose M here: the module
  83           will be called vhost_vdpa.
  84
  85 config VHOST_CROSS_ENDIAN_LEGACY
  86         bool "Cross-endian support for vhost"
  87         default n
  88         ---help---
  89           This option allows vhost to support guests with a different byte
  90           ordering from host while using legacy virtio.
  91
  92           Userspace programs can control the feature using the
  93           VHOST_SET_VRING_ENDIAN and VHOST_GET_VRING_ENDIAN ioctls.
  94
  95           This is only useful on a few platforms (ppc64 and arm64). Since it
  96           adds some overhead, it is disabled by default.
  97
  98           If unsure, say "N".
  99
 100 endif