From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/drivers/virtio/Kconfig | 65 +++++++++++++++++++++++++++-----
1 files changed, 55 insertions(+), 10 deletions(-)
diff --git a/kernel/drivers/virtio/Kconfig b/kernel/drivers/virtio/Kconfig
index 009278b..3ef5544 100644
--- a/kernel/drivers/virtio/Kconfig
+++ b/kernel/drivers/virtio/Kconfig
@@ -1,9 +1,16 @@
+# SPDX-License-Identifier: GPL-2.0-only
config VIRTIO
tristate
- ---help---
+ 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
menuconfig VIRTIO_MENU
bool "Virtio drivers"
@@ -15,7 +22,7 @@
tristate "PCI driver for virtio devices"
depends on PCI
select VIRTIO
- ---help---
+ 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
@@ -27,7 +34,7 @@
bool "Support for legacy virtio draft 0.9.X and older devices"
default y
depends on VIRTIO_PCI
- ---help---
+ help
Virtio PCI Card 0.9.X Draft (circa 2014) and older device support.
This option enables building a transitional driver, supporting
@@ -41,6 +48,19 @@
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"
@@ -57,9 +77,27 @@
tristate "Virtio balloon driver"
depends on VIRTIO
select MEMORY_BALLOON
- ---help---
+ 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.
@@ -67,18 +105,18 @@
tristate "Virtio input driver"
depends on VIRTIO
depends on INPUT
- ---help---
+ help
This driver supports virtio input devices such as
keyboards, mice and tablets.
If unsure, say M.
- config VIRTIO_MMIO
+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
+ select VIRTIO
+ help
+ This drivers provides support for memory mapped virtio
platform device driver.
If unsure, say N.
@@ -86,7 +124,7 @@
config VIRTIO_MMIO_CMDLINE_DEVICES
bool "Memory mapped virtio devices parameter parsing"
depends on VIRTIO_MMIO
- ---help---
+ 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.
@@ -94,4 +132,11 @@
If unsure, say 'N'.
+config VIRTIO_DMA_SHARED_BUFFER
+ tristate "Virtio DMA shared buffer support"
+ 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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