| 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 | |
| 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. This file is available only for | |
| performance critical channels (storage, network, etc.) that use | |
| the monitor page mechanism. | |
| 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. This file is available only for | |
| performance critical channels (storage, network, etc.) that use | |
| the monitor page mechanism. | |
| 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. This file is available only | |
| for performance critical channels (storage, network, etc.) that | |
| use the monitor page mechanism. | |
| 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 | |
| What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/intr_in_full | |
| Date: February 2019 | |
| KernelVersion: 5.0 | |
| Contact: Michael Kelley <mikelley@microsoft.com> | |
| Description: Number of guest to host interrupts caused by the inbound ring | |
| buffer transitioning from full to not full while a packet is | |
| waiting for buffer space to become available | |
| Users: Debugging tools | |
| What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/intr_out_empty | |
| Date: February 2019 | |
| KernelVersion: 5.0 | |
| Contact: Michael Kelley <mikelley@microsoft.com> | |
| Description: Number of guest to host interrupts caused by the outbound ring | |
| buffer transitioning from empty to not empty | |
| Users: Debugging tools | |
| What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/out_full_first | |
| Date: February 2019 | |
| KernelVersion: 5.0 | |
| Contact: Michael Kelley <mikelley@microsoft.com> | |
| Description: Number of write operations that were the first to encounter an | |
| outbound ring buffer full condition | |
| Users: Debugging tools | |
| What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/out_full_total | |
| Date: February 2019 | |
| KernelVersion: 5.0 | |
| Contact: Michael Kelley <mikelley@microsoft.com> | |
| Description: Total number of write operations that encountered an outbound | |
| ring buffer full condition | |
| Users: Debugging tools |