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This patch introduce a set of functions for setup/unsetup and update irq offloading respectively by register/unregister and re-register the irq_bypass_producer. With these functions, this commit can setup/unsetup irq offloading through setting DRIVER_OK/!DRIVER_OK, and update irq offloading through SET_VRING_CALL. Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com> Suggested-by: Jason Wang <jasowang@redhat.com> Link: https://lore.kernel.org/r/20200731065533.4144-5-lingshan.zhu@intel.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
93 lines
2.5 KiB
Plaintext
93 lines
2.5 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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config VHOST_IOTLB
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tristate
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help
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Generic IOTLB implementation for vhost and vringh.
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This option is selected by any driver which needs to support
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an IOMMU in software.
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config VHOST_RING
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tristate
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select VHOST_IOTLB
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help
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This option is selected by any driver which needs to access
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the host side of a virtio ring.
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config VHOST
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tristate
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select VHOST_IOTLB
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help
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This option is selected by any driver which needs to access
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the core of vhost.
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menuconfig VHOST_MENU
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bool "VHOST drivers"
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default y
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if VHOST_MENU
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config VHOST_NET
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tristate "Host kernel accelerator for virtio net"
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depends on NET && EVENTFD && (TUN || !TUN) && (TAP || !TAP)
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select VHOST
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help
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This kernel module can be loaded in host kernel to accelerate
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guest networking with virtio_net. Not to be confused with virtio_net
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module itself which needs to be loaded in guest kernel.
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To compile this driver as a module, choose M here: the module will
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be called vhost_net.
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config VHOST_SCSI
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tristate "VHOST_SCSI TCM fabric driver"
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depends on TARGET_CORE && EVENTFD
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select VHOST
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default n
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help
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Say M here to enable the vhost_scsi TCM fabric module
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for use with virtio-scsi guests
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config VHOST_VSOCK
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tristate "vhost virtio-vsock driver"
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depends on VSOCKETS && EVENTFD
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select VHOST
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select VIRTIO_VSOCKETS_COMMON
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default n
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help
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This kernel module can be loaded in the host kernel to provide AF_VSOCK
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sockets for communicating with guests. The guests must have the
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virtio_transport.ko driver loaded to use the virtio-vsock device.
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To compile this driver as a module, choose M here: the module will be called
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vhost_vsock.
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config VHOST_VDPA
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tristate "Vhost driver for vDPA-based backend"
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depends on EVENTFD
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select VHOST
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select IRQ_BYPASS_MANAGER
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depends on VDPA
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help
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This kernel module can be loaded in host kernel to accelerate
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guest virtio devices with the vDPA-based backends.
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To compile this driver as a module, choose M here: the module
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will be called vhost_vdpa.
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config VHOST_CROSS_ENDIAN_LEGACY
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bool "Cross-endian support for vhost"
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default n
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help
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This option allows vhost to support guests with a different byte
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ordering from host while using legacy virtio.
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Userspace programs can control the feature using the
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VHOST_SET_VRING_ENDIAN and VHOST_GET_VRING_ENDIAN ioctls.
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This is only useful on a few platforms (ppc64 and arm64). Since it
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adds some overhead, it is disabled by default.
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If unsure, say "N".
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endif
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