git
/
linux
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Drivers: hv: Add CONFIG_HYPERV_VMBUS option 

At present VMBus driver is hinged off of CONFIG_HYPERV which entails
lot of builtin code and encompasses too much. It's not always clear
what depends on builtin hv code and what depends on VMBus. Setting
CONFIG_HYPERV as a module and fudging the Makefile to switch to builtin
adds even more confusion. VMBus is an independent module and should have
its own config option. Also, there are scenarios like baremetal dom0/root
where support is built in with CONFIG_HYPERV but without VMBus. Lastly,
there are more features coming down that use CONFIG_HYPERV and add more
dependencies on it.

So, create a fine grained HYPERV_VMBUS option and update Kconfigs for
dependency on VMBus.

Signed-off-by: Mukesh Rathor <mrathor@linux.microsoft.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>	# drivers/pci
Signed-off-by: Wei Liu <wei.liu@kernel.org>
This commit is contained in:
Mukesh Rathor 2025-09-15 16:46:03 -07:00 committed by Wei Liu
parent a3a4d6cb0b
commit 94b04355e6
12 changed files with 25 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/Kconfig
View File

@ -398,7 +398,7 @@ source "drivers/gpu/drm/imagination/Kconfig"
config DRM_HYPERV
tristate "DRM Support for Hyper-V synthetic video device"
depends on DRM && PCI && HYPERV
depends on DRM && PCI && HYPERV_VMBUS
select DRM_CLIENT_SELECTION
select DRM_KMS_HELPER
select DRM_GEM_SHMEM_HELPER

2
drivers/hid/Kconfig
View File

@ -1162,7 +1162,7 @@ config GREENASIA_FF
config HID_HYPERV_MOUSE
tristate "Microsoft Hyper-V mouse driver"
depends on HYPERV
depends on HYPERV_VMBUS
help
Select this option to enable the Hyper-V mouse driver.

11
drivers/hv/Kconfig
View File

@ -45,18 +45,25 @@ config HYPERV_TIMER
config HYPERV_UTILS
tristate "Microsoft Hyper-V Utilities driver"
depends on HYPERV && CONNECTOR && NLS
depends on HYPERV_VMBUS && CONNECTOR && NLS
depends on PTP_1588_CLOCK_OPTIONAL
help
Select this option to enable the Hyper-V Utilities.
config HYPERV_BALLOON
tristate "Microsoft Hyper-V Balloon driver"
depends on HYPERV
depends on HYPERV_VMBUS
select PAGE_REPORTING
help
Select this option to enable Hyper-V Balloon driver.
config HYPERV_VMBUS
tristate "Microsoft Hyper-V VMBus driver"
depends on HYPERV
default HYPERV
help
Select this option to enable Hyper-V Vmbus driver.
config MSHV_ROOT
tristate "Microsoft Hyper-V root partition support"
depends on HYPERV && (X86_64 || ARM64)

2
drivers/hv/Makefile
View File

@ -1,5 +1,5 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_HYPERV) += hv_vmbus.o
obj-$(CONFIG_HYPERV_VMBUS) += hv_vmbus.o
obj-$(CONFIG_HYPERV_UTILS) += hv_utils.o
obj-$(CONFIG_HYPERV_BALLOON) += hv_balloon.o
obj-$(CONFIG_MSHV_ROOT) += mshv_root.o

4
drivers/input/serio/Kconfig
View File

@ -276,8 +276,8 @@ config SERIO_OLPC_APSP
config HYPERV_KEYBOARD
tristate "Microsoft Synthetic Keyboard driver"
depends on HYPERV
default HYPERV
depends on HYPERV_VMBUS
default HYPERV_VMBUS
help
Select this option to enable the Hyper-V Keyboard driver.

2
drivers/net/hyperv/Kconfig
View File

@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only
config HYPERV_NET
tristate "Microsoft Hyper-V virtual network driver"
depends on HYPERV
depends on HYPERV_VMBUS
select UCS2_STRING
select NLS
help

2
drivers/pci/Kconfig
View File

@ -221,7 +221,7 @@ config PCI_LABEL
config PCI_HYPERV
tristate "Hyper-V PCI Frontend"
depends on ((X86 && X86_64) || ARM64) && HYPERV && PCI_MSI && SYSFS
depends on ((X86 && X86_64) || ARM64) && HYPERV_VMBUS && PCI_MSI && SYSFS
select PCI_HYPERV_INTERFACE
select IRQ_MSI_LIB
help

2
drivers/scsi/Kconfig
View File

@ -589,7 +589,7 @@ config XEN_SCSI_FRONTEND
config HYPERV_STORAGE
tristate "Microsoft Hyper-V virtual storage driver"
depends on SCSI && HYPERV
depends on SCSI && HYPERV_VMBUS
depends on m || SCSI_FC_ATTRS != m
default HYPERV
help

2
drivers/uio/Kconfig
View File

@ -140,7 +140,7 @@ config UIO_MF624
config UIO_HV_GENERIC
tristate "Generic driver for Hyper-V VMBus"
depends on HYPERV
depends on HYPERV_VMBUS
help
Generic driver that you can bind, dynamically, to any
Hyper-V VMBus device. It is useful to provide direct access

2
drivers/video/fbdev/Kconfig
View File

@ -1774,7 +1774,7 @@ config FB_BROADSHEET
config FB_HYPERV
tristate "Microsoft Hyper-V Synthetic Video support"
depends on FB && HYPERV
depends on FB && HYPERV_VMBUS
select DMA_CMA if HAVE_DMA_CONTIGUOUS && CMA
select FB_IOMEM_HELPERS_DEFERRED
help

8
include/asm-generic/mshyperv.h
View File

@ -163,6 +163,7 @@ static inline u64 hv_generate_guest_id(u64 kernel_version)
return guest_id;
}
#if IS_ENABLED(CONFIG_HYPERV_VMBUS)
/* Free the message slot and signal end-of-message if required */
static inline void vmbus_signal_eom(struct hv_message *msg, u32 old_msg_type)
{
@ -198,6 +199,10 @@ static inline void vmbus_signal_eom(struct hv_message *msg, u32 old_msg_type)
}
}
extern int vmbus_interrupt;
extern int vmbus_irq;
#endif /* CONFIG_HYPERV_VMBUS */
int hv_get_hypervisor_version(union hv_hypervisor_version_info *info);
void hv_setup_vmbus_handler(void (*handler)(void));
@ -211,9 +216,6 @@ void hv_setup_crash_handler(void (*handler)(struct pt_regs *regs));
void hv_remove_crash_handler(void);
void hv_setup_mshv_handler(void (*handler)(void));
extern int vmbus_interrupt;
extern int vmbus_irq;
#if IS_ENABLED(CONFIG_HYPERV)
/*
* Hypervisor's notion of virtual processor ID is different from

2
net/vmw_vsock/Kconfig
View File

@ -72,7 +72,7 @@ config VIRTIO_VSOCKETS_COMMON
config HYPERV_VSOCKETS
tristate "Hyper-V transport for Virtual Sockets"
depends on VSOCKETS && HYPERV
depends on VSOCKETS && HYPERV_VMBUS
help
This module implements a Hyper-V transport for Virtual Sockets.