diff options
Diffstat (limited to 'drivers/vhost/Kconfig')
| -rw-r--r-- | drivers/vhost/Kconfig | 83 |
1 files changed, 72 insertions, 11 deletions
diff --git a/drivers/vhost/Kconfig b/drivers/vhost/Kconfig index cfdecea5078f..bc0f38574497 100644 --- a/drivers/vhost/Kconfig +++ b/drivers/vhost/Kconfig @@ -1,8 +1,41 @@ +# 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--- + 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. @@ -12,20 +45,21 @@ config VHOST_NET config VHOST_SCSI tristate "VHOST_SCSI TCM fabric driver" - depends on TARGET_CORE && EVENTFD && m + depends on TARGET_CORE && EVENTFD select VHOST + select SG_POOL default n - ---help--- + 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 VIRTIO_VSOCKETS_COMMON select VHOST + select VIRTIO_VSOCKETS_COMMON default n - ---help--- + 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. @@ -33,16 +67,23 @@ config VHOST_VSOCK To compile this driver as a module, choose M here: the module will be called vhost_vsock. -config VHOST - tristate - ---help--- - This option is selected by any driver which needs to access - the core of vhost. +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--- + help This option allows vhost to support guests with a different byte ordering from host while using legacy virtio. @@ -53,3 +94,23 @@ config VHOST_CROSS_ENDIAN_LEGACY 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 |