| 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 associtated 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 | 
 | Users:		tools/hv/lsvmbus and other debugging tools | 
 |  | 
 | 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 | 
 | Users:		tools/hv/lsvmbus and other debugging tools | 
 |  | 
 | What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/in_mask | 
 | Date:		September. 2017 | 
 | KernelVersion:	4.14 | 
 | Contact:	Stephen Hemminger <sthemmin@microsoft.com> | 
 | Description:	Host to guest channel interrupt mask | 
 | Users:		Debugging tools | 
 |  | 
 | What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/latency | 
 | Date:		September. 2017 | 
 | KernelVersion:	4.14 | 
 | Contact:	Stephen Hemminger <sthemmin@microsoft.com> | 
 | Description:	Channel signaling latency | 
 | Users:		Debugging tools | 
 |  | 
 | What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/out_mask | 
 | Date:		September. 2017 | 
 | KernelVersion:	4.14 | 
 | Contact:	Stephen Hemminger <sthemmin@microsoft.com> | 
 | Description:	Guest to host channel interrupt mask | 
 | Users:		Debugging tools | 
 |  | 
 | What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/pending | 
 | Date:		September. 2017 | 
 | KernelVersion:	4.14 | 
 | Contact:	Stephen Hemminger <sthemmin@microsoft.com> | 
 | Description:	Channel interrupt pending state | 
 | Users:		Debugging tools | 
 |  | 
 | What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/read_avail | 
 | Date:		September. 2017 | 
 | KernelVersion:	4.14 | 
 | Contact:	Stephen Hemminger <sthemmin@microsoft.com> | 
 | Description:	Bytes available to read | 
 | Users:		Debugging tools | 
 |  | 
 | What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/write_avail | 
 | Date:		September. 2017 | 
 | KernelVersion:	4.14 | 
 | Contact:	Stephen Hemminger <sthemmin@microsoft.com> | 
 | Description:	Bytes available to write | 
 | Users:		Debugging tools | 
 |  | 
 | What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/events | 
 | Date:		September. 2017 | 
 | KernelVersion:	4.14 | 
 | Contact:	Stephen Hemminger <sthemmin@microsoft.com> | 
 | Description:	Number of times we have signaled the host | 
 | Users:		Debugging tools | 
 |  | 
 | What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/interrupts | 
 | Date:		September. 2017 | 
 | KernelVersion:	4.14 | 
 | Contact:	Stephen Hemminger <sthemmin@microsoft.com> | 
 | Description:	Number of times we have taken an interrupt (incoming) | 
 | Users:		Debugging tools | 
 |  | 
 | What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/subchannel_id | 
 | Date:		January. 2018 | 
 | KernelVersion:	4.16 | 
 | Contact:	Stephen Hemminger <sthemmin@microsoft.com> | 
 | Description:	Subchannel ID associated with VMBUS channel | 
 | Users:		Debugging tools and userspace drivers | 
 |  | 
 | What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/monitor_id | 
 | Date:		January. 2018 | 
 | KernelVersion:	4.16 | 
 | Contact:	Stephen Hemminger <sthemmin@microsoft.com> | 
 | Description:	Monitor bit associated with channel | 
 | Users:		Debugging tools and userspace drivers | 
 |  | 
 | What:		/sys/bus/vmbus/devices/<UUID>/channels/<N>/ring | 
 | Date:		January. 2018 | 
 | KernelVersion:	4.16 | 
 | Contact:	Stephen Hemminger <sthemmin@microsoft.com> | 
 | Description:	Binary file created by uio_hv_generic for ring buffer | 
 | Users:		Userspace drivers |