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- # SPDX-License-Identifier: GPL-2.0-only
- config VHOST_IOTLB
- tristate
- help
- Generic IOTLB implementation for vhost and vringh.
- This option is selected by any driver which needs to support
- an IOMMU in software.
- config VHOST_RING
- tristate
- select VHOST_IOTLB
- help
- This option is selected by any driver which needs to access
- the host side of a virtio ring.
- config VHOST_TASK
- bool
- default n
- config VHOST
- tristate
- select VHOST_IOTLB
- select VHOST_TASK
- help
- This option is selected by any driver which needs to access
- the core of vhost.
- menuconfig VHOST_MENU
- bool "VHOST drivers"
- default y
- if VHOST_MENU
- config VHOST_NET
- tristate "Host kernel accelerator for virtio net"
- depends on NET && EVENTFD && (TUN || !TUN) && (TAP || !TAP)
- select VHOST
- help
- This kernel module can be loaded in host kernel to accelerate
- guest networking with virtio_net. Not to be confused with virtio_net
- module itself which needs to be loaded in guest kernel.
- To compile this driver as a module, choose M here: the module will
- be called vhost_net.
- config VHOST_SCSI
- tristate "VHOST_SCSI TCM fabric driver"
- depends on TARGET_CORE && EVENTFD
- select VHOST
- default n
- help
- Say M here to enable the vhost_scsi TCM fabric module
- for use with virtio-scsi guests
- config VHOST_VSOCK
- tristate "vhost virtio-vsock driver"
- depends on VSOCKETS && EVENTFD
- select VHOST
- select VIRTIO_VSOCKETS_COMMON
- default n
- help
- This kernel module can be loaded in the host kernel to provide AF_VSOCK
- sockets for communicating with guests. The guests must have the
- virtio_transport.ko driver loaded to use the virtio-vsock device.
- To compile this driver as a module, choose M here: the module will be called
- vhost_vsock.
- config VHOST_VDPA
- tristate "Vhost driver for vDPA-based backend"
- depends on EVENTFD
- select VHOST
- select IRQ_BYPASS_MANAGER
- depends on VDPA
- help
- This kernel module can be loaded in host kernel to accelerate
- guest virtio devices with the vDPA-based backends.
- To compile this driver as a module, choose M here: the module
- will be called vhost_vdpa.
- config VHOST_CROSS_ENDIAN_LEGACY
- bool "Cross-endian support for vhost"
- default n
- help
- This option allows vhost to support guests with a different byte
- ordering from host while using legacy virtio.
- Userspace programs can control the feature using the
- VHOST_SET_VRING_ENDIAN and VHOST_GET_VRING_ENDIAN ioctls.
- This is only useful on a few platforms (ppc64 and arm64). Since it
- adds some overhead, it is disabled by default.
- If unsure, say "N".
- config VHOST_ENABLE_FORK_OWNER_CONTROL
- bool "Enable VHOST_ENABLE_FORK_OWNER_CONTROL"
- default y
- help
- This option enables two IOCTLs: VHOST_SET_FORK_FROM_OWNER and
- VHOST_GET_FORK_FROM_OWNER. These allow userspace applications
- to modify the vhost worker mode for vhost devices.
- Also expose module parameter 'fork_from_owner_default' to allow users
- to configure the default mode for vhost workers.
- By default, `VHOST_ENABLE_FORK_OWNER_CONTROL` is set to `y`,
- users can change the worker thread mode as needed.
- If this config is disabled (n),the related IOCTLs and parameters will
- be unavailable.
- If unsure, say "Y".
- endif
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