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usr
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linux-headers-5.15.0-190
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drivers
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virtio
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/usr/src/linux-headers-5.15.0-190/drivers/virtio
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/usr/src/linux-headers-5.15.0-190/drivers/virtio/Kconfig
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# SPDX-License-Identifier: GPL-2.0-only 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. config ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS bool help This option is selected if the architecture may need to enforce VIRTIO_F_ACCESS_PLATFORM config VIRTIO_PCI_LIB tristate help Modern PCI device implementation. This module implements the basic probe and control for devices which are based on modern PCI device with possible vendor specific extensions. Any module that selects this module must depend on PCI. menuconfig VIRTIO_MENU bool "Virtio drivers" default y if VIRTIO_MENU config VIRTIO_PCI tristate "PCI driver for virtio devices" depends on PCI select VIRTIO_PCI_LIB 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_VDPA tristate "vDPA driver for virtio devices" depends on VDPA select VIRTIO help This driver provides support for virtio based paravirtual device driver over vDPA bus. For this to be useful, you need an appropriate vDPA device implementation that operates on a physical device to allow the datapath of virtio to be offloaded to hardware. If unsure, say M. config VIRTIO_PMEM tristate "Support for virtio pmem driver" depends on VIRTIO depends on LIBNVDIMM help This driver provides access to virtio-pmem devices, storage devices that are mapped into the physical address space - similar to NVDIMMs - with a virtio-based flushing interface. If unsure, say Y. config VIRTIO_BALLOON tristate "Virtio balloon driver" depends on VIRTIO select MEMORY_BALLOON select PAGE_REPORTING help This driver supports increasing and decreasing the amount of memory within a KVM guest. If unsure, say M. config VIRTIO_MEM tristate "Virtio mem driver" default m depends on X86_64 depends on VIRTIO depends on MEMORY_HOTPLUG_SPARSE depends on MEMORY_HOTREMOVE depends on CONTIG_ALLOC help This driver provides access to virtio-mem paravirtualized memory devices, allowing to hotplug and hotunplug memory. This driver was only tested under x86-64, but should theoretically work on all architectures that support memory hotplug and hotremove. 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'. config VIRTIO_DMA_SHARED_BUFFER tristate depends on DMA_SHARED_BUFFER help This option adds a flavor of dma buffers that are backed by virtio resources. endif # VIRTIO_MENU
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