1 What: /sys/bus/vmbus/hibernation 1 What: /sys/bus/vmbus/hibernation
2 Date: Jan 2021 2 Date: Jan 2021
3 KernelVersion: 5.12 3 KernelVersion: 5.12
4 Contact: Dexuan Cui <decui@microsoft.com 4 Contact: Dexuan Cui <decui@microsoft.com>
5 Description: Whether the host supports hibe 5 Description: Whether the host supports hibernation for the VM.
6 Users: Daemon that sets up swap parti 6 Users: Daemon that sets up swap partition/file for hibernation.
7 7
8 What: /sys/bus/vmbus/devices/<UUID>/ 8 What: /sys/bus/vmbus/devices/<UUID>/id
9 Date: Jul 2009 9 Date: Jul 2009
10 KernelVersion: 2.6.31 10 KernelVersion: 2.6.31
11 Contact: K. Y. Srinivasan <kys@microsoft 11 Contact: K. Y. Srinivasan <kys@microsoft.com>
12 Description: The VMBus child_relid of the d 12 Description: The VMBus child_relid of the device's primary channel
13 Users: tools/hv/lsvmbus 13 Users: tools/hv/lsvmbus
14 14
15 What: /sys/bus/vmbus/devices/<UUID>/ 15 What: /sys/bus/vmbus/devices/<UUID>/class_id
16 Date: Jul 2009 16 Date: Jul 2009
17 KernelVersion: 2.6.31 17 KernelVersion: 2.6.31
18 Contact: K. Y. Srinivasan <kys@microsoft 18 Contact: K. Y. Srinivasan <kys@microsoft.com>
19 Description: The VMBus interface type GUID 19 Description: The VMBus interface type GUID of the device
20 Users: tools/hv/lsvmbus 20 Users: tools/hv/lsvmbus
21 21
22 What: /sys/bus/vmbus/devices/<UUID>/ 22 What: /sys/bus/vmbus/devices/<UUID>/device_id
23 Date: Jul 2009 23 Date: Jul 2009
24 KernelVersion: 2.6.31 24 KernelVersion: 2.6.31
25 Contact: K. Y. Srinivasan <kys@microsoft 25 Contact: K. Y. Srinivasan <kys@microsoft.com>
26 Description: The VMBus interface instance G 26 Description: The VMBus interface instance GUID of the device
27 Users: tools/hv/lsvmbus 27 Users: tools/hv/lsvmbus
28 28
29 What: /sys/bus/vmbus/devices/<UUID>/ 29 What: /sys/bus/vmbus/devices/<UUID>/channel_vp_mapping
30 Date: Jul 2015 30 Date: Jul 2015
31 KernelVersion: 4.2.0 31 KernelVersion: 4.2.0
32 Contact: K. Y. Srinivasan <kys@microsoft 32 Contact: K. Y. Srinivasan <kys@microsoft.com>
33 Description: The mapping of which primary/s 33 Description: The mapping of which primary/sub channels are bound to which
34 Virtual Processors. 34 Virtual Processors.
35 Format: <channel's child_relid 35 Format: <channel's child_relid:the bound cpu's number>
36 Users: tools/hv/lsvmbus 36 Users: tools/hv/lsvmbus
37 37
38 What: /sys/bus/vmbus/devices/<UUID>/ 38 What: /sys/bus/vmbus/devices/<UUID>/device
39 Date: Dec. 2015 39 Date: Dec. 2015
40 KernelVersion: 4.5 40 KernelVersion: 4.5
41 Contact: K. Y. Srinivasan <kys@microsoft 41 Contact: K. Y. Srinivasan <kys@microsoft.com>
42 Description: The 16 bit device ID of the de 42 Description: The 16 bit device ID of the device
43 Users: tools/hv/lsvmbus and user leve 43 Users: tools/hv/lsvmbus and user level RDMA libraries
44 44
45 What: /sys/bus/vmbus/devices/<UUID>/ 45 What: /sys/bus/vmbus/devices/<UUID>/vendor
46 Date: Dec. 2015 46 Date: Dec. 2015
47 KernelVersion: 4.5 47 KernelVersion: 4.5
48 Contact: K. Y. Srinivasan <kys@microsoft 48 Contact: K. Y. Srinivasan <kys@microsoft.com>
49 Description: The 16 bit vendor ID of the de 49 Description: The 16 bit vendor ID of the device
50 Users: tools/hv/lsvmbus and user leve 50 Users: tools/hv/lsvmbus and user level RDMA libraries
51 51
52 What: /sys/bus/vmbus/devices/<UUID>/ 52 What: /sys/bus/vmbus/devices/<UUID>/numa_node
53 Date: Jul 2018 53 Date: Jul 2018
54 KernelVersion: 4.19 54 KernelVersion: 4.19
55 Contact: Stephen Hemminger <sthemmin@mic 55 Contact: Stephen Hemminger <sthemmin@microsoft.com>
56 Description: This NUMA node to which the VM 56 Description: This NUMA node to which the VMBUS device is
57 attached, or -1 if the node is 57 attached, or -1 if the node is unknown.
58 58
59 What: /sys/bus/vmbus/devices/<UUID>/ 59 What: /sys/bus/vmbus/devices/<UUID>/channels/<N>
60 Date: September. 2017 60 Date: September. 2017
61 KernelVersion: 4.14 61 KernelVersion: 4.14
62 Contact: Stephen Hemminger <sthemmin@mic 62 Contact: Stephen Hemminger <sthemmin@microsoft.com>
63 Description: Directory for per-channel info 63 Description: Directory for per-channel information
64 NN is the VMBUS relid associat 64 NN is the VMBUS relid associated with the channel.
65 65
66 What: /sys/bus/vmbus/devices/<UUID>/ 66 What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/cpu
67 Date: September. 2017 67 Date: September. 2017
68 KernelVersion: 4.14 68 KernelVersion: 4.14
69 Contact: Stephen Hemminger <sthemmin@mic 69 Contact: Stephen Hemminger <sthemmin@microsoft.com>
70 Description: VCPU (sub)channel is affinitiz 70 Description: VCPU (sub)channel is affinitized to
71 Users: tools/hv/lsvmbus and other deb 71 Users: tools/hv/lsvmbus and other debugging tools
72 72
73 What: /sys/bus/vmbus/devices/<UUID>/ 73 What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/in_mask
74 Date: September. 2017 74 Date: September. 2017
75 KernelVersion: 4.14 75 KernelVersion: 4.14
76 Contact: Stephen Hemminger <sthemmin@mic 76 Contact: Stephen Hemminger <sthemmin@microsoft.com>
77 Description: Host to guest channel interrup 77 Description: Host to guest channel interrupt mask
78 Users: Debugging tools 78 Users: Debugging tools
79 79
80 What: /sys/bus/vmbus/devices/<UUID>/ 80 What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/latency
81 Date: September. 2017 81 Date: September. 2017
82 KernelVersion: 4.14 82 KernelVersion: 4.14
83 Contact: Stephen Hemminger <sthemmin@mic 83 Contact: Stephen Hemminger <sthemmin@microsoft.com>
84 Description: Channel signaling latency. Thi 84 Description: Channel signaling latency. This file is available only for
85 performance critical channels 85 performance critical channels (storage, network, etc.) that use
86 the monitor page mechanism. 86 the monitor page mechanism.
87 Users: Debugging tools 87 Users: Debugging tools
88 88
89 What: /sys/bus/vmbus/devices/<UUID>/ 89 What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/out_mask
90 Date: September. 2017 90 Date: September. 2017
91 KernelVersion: 4.14 91 KernelVersion: 4.14
92 Contact: Stephen Hemminger <sthemmin@mic 92 Contact: Stephen Hemminger <sthemmin@microsoft.com>
93 Description: Guest to host channel interrup 93 Description: Guest to host channel interrupt mask
94 Users: Debugging tools 94 Users: Debugging tools
95 95
96 What: /sys/bus/vmbus/devices/<UUID>/ 96 What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/pending
97 Date: September. 2017 97 Date: September. 2017
98 KernelVersion: 4.14 98 KernelVersion: 4.14
99 Contact: Stephen Hemminger <sthemmin@mic 99 Contact: Stephen Hemminger <sthemmin@microsoft.com>
100 Description: Channel interrupt pending stat 100 Description: Channel interrupt pending state. This file is available only for
101 performance critical channels 101 performance critical channels (storage, network, etc.) that use
102 the monitor page mechanism. 102 the monitor page mechanism.
103 Users: Debugging tools 103 Users: Debugging tools
104 104
105 What: /sys/bus/vmbus/devices/<UUID>/ 105 What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/read_avail
106 Date: September. 2017 106 Date: September. 2017
107 KernelVersion: 4.14 107 KernelVersion: 4.14
108 Contact: Stephen Hemminger <sthemmin@mic 108 Contact: Stephen Hemminger <sthemmin@microsoft.com>
109 Description: Bytes available to read 109 Description: Bytes available to read
110 Users: Debugging tools 110 Users: Debugging tools
111 111
112 What: /sys/bus/vmbus/devices/<UUID>/ 112 What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/write_avail
113 Date: September. 2017 113 Date: September. 2017
114 KernelVersion: 4.14 114 KernelVersion: 4.14
115 Contact: Stephen Hemminger <sthemmin@mic 115 Contact: Stephen Hemminger <sthemmin@microsoft.com>
116 Description: Bytes available to write 116 Description: Bytes available to write
117 Users: Debugging tools 117 Users: Debugging tools
118 118
119 What: /sys/bus/vmbus/devices/<UUID>/ 119 What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/events
120 Date: September. 2017 120 Date: September. 2017
121 KernelVersion: 4.14 121 KernelVersion: 4.14
122 Contact: Stephen Hemminger <sthemmin@mic 122 Contact: Stephen Hemminger <sthemmin@microsoft.com>
123 Description: Number of times we have signal 123 Description: Number of times we have signaled the host
124 Users: Debugging tools 124 Users: Debugging tools
125 125
126 What: /sys/bus/vmbus/devices/<UUID>/ 126 What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/interrupts
127 Date: September. 2017 127 Date: September. 2017
128 KernelVersion: 4.14 128 KernelVersion: 4.14
129 Contact: Stephen Hemminger <sthemmin@mic 129 Contact: Stephen Hemminger <sthemmin@microsoft.com>
130 Description: Number of times we have taken 130 Description: Number of times we have taken an interrupt (incoming)
131 Users: Debugging tools 131 Users: Debugging tools
132 132
133 What: /sys/bus/vmbus/devices/<UUID>/ 133 What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/subchannel_id
134 Date: January. 2018 134 Date: January. 2018
135 KernelVersion: 4.16 135 KernelVersion: 4.16
136 Contact: Stephen Hemminger <sthemmin@mic 136 Contact: Stephen Hemminger <sthemmin@microsoft.com>
137 Description: Subchannel ID associated with 137 Description: Subchannel ID associated with VMBUS channel
138 Users: Debugging tools and userspace 138 Users: Debugging tools and userspace drivers
139 139
140 What: /sys/bus/vmbus/devices/<UUID>/ 140 What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/monitor_id
141 Date: January. 2018 141 Date: January. 2018
142 KernelVersion: 4.16 142 KernelVersion: 4.16
143 Contact: Stephen Hemminger <sthemmin@mic 143 Contact: Stephen Hemminger <sthemmin@microsoft.com>
144 Description: Monitor bit associated with ch 144 Description: Monitor bit associated with channel. This file is available only
145 for performance critical chann 145 for performance critical channels (storage, network, etc.) that
146 use the monitor page mechanism 146 use the monitor page mechanism.
147 Users: Debugging tools and userspace 147 Users: Debugging tools and userspace drivers
148 148
149 What: /sys/bus/vmbus/devices/<UUID>/ 149 What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/ring
150 Date: January. 2018 150 Date: January. 2018
151 KernelVersion: 4.16 151 KernelVersion: 4.16
152 Contact: Stephen Hemminger <sthemmin@mic 152 Contact: Stephen Hemminger <sthemmin@microsoft.com>
153 Description: Binary file created by uio_hv_ 153 Description: Binary file created by uio_hv_generic for ring buffer
154 Users: Userspace drivers 154 Users: Userspace drivers
155 155
156 What: /sys/bus/vmbus/devices/<UUID>/ 156 What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/intr_in_full
157 Date: February 2019 157 Date: February 2019
158 KernelVersion: 5.0 158 KernelVersion: 5.0
159 Contact: Michael Kelley <mikelley@micros 159 Contact: Michael Kelley <mikelley@microsoft.com>
160 Description: Number of guest to host interr 160 Description: Number of guest to host interrupts caused by the inbound ring
161 buffer transitioning from full 161 buffer transitioning from full to not full while a packet is
162 waiting for buffer space to be 162 waiting for buffer space to become available
163 Users: Debugging tools 163 Users: Debugging tools
164 164
165 What: /sys/bus/vmbus/devices/<UUID>/ 165 What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/intr_out_empty
166 Date: February 2019 166 Date: February 2019
167 KernelVersion: 5.0 167 KernelVersion: 5.0
168 Contact: Michael Kelley <mikelley@micros 168 Contact: Michael Kelley <mikelley@microsoft.com>
169 Description: Number of guest to host interr 169 Description: Number of guest to host interrupts caused by the outbound ring
170 buffer transitioning from empt 170 buffer transitioning from empty to not empty
171 Users: Debugging tools 171 Users: Debugging tools
172 172
173 What: /sys/bus/vmbus/devices/<UUID>/ 173 What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/out_full_first
174 Date: February 2019 174 Date: February 2019
175 KernelVersion: 5.0 175 KernelVersion: 5.0
176 Contact: Michael Kelley <mikelley@micros 176 Contact: Michael Kelley <mikelley@microsoft.com>
177 Description: Number of write operations tha 177 Description: Number of write operations that were the first to encounter an
178 outbound ring buffer full cond 178 outbound ring buffer full condition
179 Users: Debugging tools 179 Users: Debugging tools
180 180
181 What: /sys/bus/vmbus/devices/<UUID>/ 181 What: /sys/bus/vmbus/devices/<UUID>/channels/<N>/out_full_total
182 Date: February 2019 182 Date: February 2019
183 KernelVersion: 5.0 183 KernelVersion: 5.0
184 Contact: Michael Kelley <mikelley@micros 184 Contact: Michael Kelley <mikelley@microsoft.com>
185 Description: Total number of write operatio 185 Description: Total number of write operations that encountered an outbound
186 ring buffer full condition 186 ring buffer full condition
187 Users: Debugging tools 187 Users: Debugging tools
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