mk-rootfs.sh

hc

2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376

 kernel/drivers/virtio/Kconfig
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@@ -1,9 +1,16 @@
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+# SPDX-License-Identifier: GPL-2.0-only
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 config VIRTIO
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 	tristate
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-	---help---
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+	help
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 	  This option is selected by any driver which implements the virtio
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 	  bus, such as CONFIG_VIRTIO_PCI, CONFIG_VIRTIO_MMIO, CONFIG_RPMSG
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 	  or CONFIG_S390_GUEST.
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+
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+config ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS
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+	bool
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+	help
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+	  This option is selected if the architecture may need to enforce
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+	  VIRTIO_F_ACCESS_PLATFORM
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 menuconfig VIRTIO_MENU
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 	bool "Virtio drivers"
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 	tristate "PCI driver for virtio devices"
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 	depends on PCI
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 	select VIRTIO
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-	---help---
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+	help
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 	  This driver provides support for virtio based paravirtual device
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 	  drivers over PCI.  This requires that your VMM has appropriate PCI
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 	  virtio backends.  Most QEMU based VMMs should support these devices
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 	bool "Support for legacy virtio draft 0.9.X and older devices"
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 	default y
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 	depends on VIRTIO_PCI
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-	---help---
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+	help
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           Virtio PCI Card 0.9.X Draft (circa 2014) and older device support.
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 	  This option enables building a transitional driver, supporting
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@@ -41,6 +48,19 @@
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           life will be like in The Future.
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 	  If unsure, say Y.
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+
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+config VIRTIO_VDPA
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+	tristate "vDPA driver for virtio devices"
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+	depends on VDPA
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+	select VIRTIO
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+	help
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+	  This driver provides support for virtio based paravirtual
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+	  device driver over vDPA bus. For this to be useful, you need
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+	  an appropriate vDPA device implementation that operates on a
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+	  physical device to allow the datapath of virtio to be
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+	  offloaded to hardware.
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+
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+	  If unsure, say M.
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 config VIRTIO_PMEM
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 	tristate "Support for virtio pmem driver"
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 	tristate "Virtio balloon driver"
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 	depends on VIRTIO
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 	select MEMORY_BALLOON
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-	---help---
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+	select PAGE_REPORTING
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+	help
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 	 This driver supports increasing and decreasing the amount
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 	 of memory within a KVM guest.
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+
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+	 If unsure, say M.
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+
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+config VIRTIO_MEM
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+	tristate "Virtio mem driver"
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+	default m
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+	depends on X86_64
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+	depends on VIRTIO
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+	depends on MEMORY_HOTPLUG_SPARSE
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+	depends on MEMORY_HOTREMOVE
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+	depends on CONTIG_ALLOC
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+	help
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+	 This driver provides access to virtio-mem paravirtualized memory
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+	 devices, allowing to hotplug and hotunplug memory.
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+
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+	 This driver was only tested under x86-64, but should theoretically
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+	 work on all architectures that support memory hotplug and hotremove.
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 	 If unsure, say M.
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 	tristate "Virtio input driver"
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 	depends on VIRTIO
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 	depends on INPUT
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-	---help---
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+	help
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 	 This driver supports virtio input devices such as
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 	 keyboards, mice and tablets.
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 	 If unsure, say M.
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- config VIRTIO_MMIO
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+config VIRTIO_MMIO
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 	tristate "Platform bus driver for memory mapped virtio devices"
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 	depends on HAS_IOMEM && HAS_DMA
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- 	select VIRTIO
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- 	---help---
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- 	 This drivers provides support for memory mapped virtio
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+	select VIRTIO
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+	help
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+	 This drivers provides support for memory mapped virtio
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 	 platform device driver.
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  	 If unsure, say N.
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 config VIRTIO_MMIO_CMDLINE_DEVICES
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 	bool "Memory mapped virtio devices parameter parsing"
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 	depends on VIRTIO_MMIO
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-	---help---
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+	help
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 	 Allow virtio-mmio devices instantiation via the kernel command line
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 	 or module parameters. Be aware that using incorrect parameters (base
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 	 address in particular) can crash your system - you have been warned.
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 	 If unsure, say 'N'.
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+config VIRTIO_DMA_SHARED_BUFFER
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+	tristate "Virtio DMA shared buffer support"
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+	depends on DMA_SHARED_BUFFER
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+	help
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+	 This option adds a flavor of dma buffers that are backed by
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+	 virtio resources.
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+
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 endif # VIRTIO_MENU