Documentation/ABI/stable/sysfs-bus-vmbus

Source file repositories/reference/linux-study-clean/Documentation/ABI/stable/sysfs-bus-vmbus

File Facts

System
Linux kernel
Corpus path
Documentation/ABI/stable/sysfs-bus-vmbus
Extension
[no extension]
Size
6744 bytes
Lines
188
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: Documentation
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

What:		/sys/bus/vmbus/hibernation
Date:		Jan 2021
KernelVersion:	5.12
Contact:	Dexuan Cui <decui@microsoft.com>
Description:	Whether the host supports hibernation for the VM.
Users:		Daemon that sets up swap partition/file for hibernation.

What:		/sys/bus/vmbus/devices/<UUID>/id
Date:		Jul 2009
KernelVersion:	2.6.31
Contact:	K. Y. Srinivasan <kys@microsoft.com>
Description:	The VMBus child_relid of the device's primary channel
Users:		tools/hv/lsvmbus

What:		/sys/bus/vmbus/devices/<UUID>/class_id
Date:		Jul 2009
KernelVersion:	2.6.31
Contact:	K. Y. Srinivasan <kys@microsoft.com>
Description:	The VMBus interface type GUID of the device
Users:		tools/hv/lsvmbus

What:		/sys/bus/vmbus/devices/<UUID>/device_id
Date:		Jul 2009
KernelVersion:	2.6.31
Contact:	K. Y. Srinivasan <kys@microsoft.com>
Description:	The VMBus interface instance GUID of the device
Users:		tools/hv/lsvmbus

What:		/sys/bus/vmbus/devices/<UUID>/channel_vp_mapping
Date:		Jul 2015
KernelVersion:	4.2.0
Contact:	K. Y. Srinivasan <kys@microsoft.com>
Description:	The mapping of which primary/sub channels are bound to which
		Virtual Processors.
		Format: <channel's child_relid:the bound cpu's number>
Users:		tools/hv/lsvmbus

What:		/sys/bus/vmbus/devices/<UUID>/device
Date:		Dec. 2015
KernelVersion:	4.5
Contact:	K. Y. Srinivasan <kys@microsoft.com>
Description:	The 16 bit device ID of the device
Users:		tools/hv/lsvmbus and user level RDMA libraries

What:		/sys/bus/vmbus/devices/<UUID>/vendor
Date:		Dec. 2015
KernelVersion:	4.5
Contact:	K. Y. Srinivasan <kys@microsoft.com>
Description:	The 16 bit vendor ID of the device
Users:		tools/hv/lsvmbus and user level RDMA libraries

What:		/sys/bus/vmbus/devices/<UUID>/numa_node
Date:		Jul 2018
KernelVersion:	4.19
Contact:	Stephen Hemminger <sthemmin@microsoft.com>
Description:	This NUMA node to which the VMBUS device is
		attached, or -1 if the node is unknown.

What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>
Date:		September. 2017
KernelVersion:	4.14
Contact:	Stephen Hemminger <sthemmin@microsoft.com>
Description:	Directory for per-channel information
		NN is the VMBUS relid associated with the channel.

What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/cpu
Date:		September. 2017
KernelVersion:	4.14
Contact:	Stephen Hemminger <sthemmin@microsoft.com>
Description:	VCPU (sub)channel is affinitized to

Annotation

Implementation Notes