The document describes the evolution of the Hyper-V Hypervisor User-Mode API Library (WinHvPlatform.dll) across different versions of Windows 10 and Windows 11, including new API functions introduced in each version.

1. WinHVPlatform.dll
build:10.0.18305.1000
Windows 10, build 1809
1. WHvCancelRunVirtualProcessor
2. WHvCreatePartition
3. WHvCreateVirtualProcessor
4. WHvDeletePartition
5. WHvDeleteVirtualProcessor
6. WHvGetCapability
7. WHvGetPartitionCounters
8. WHvGetPartitionProperty
9. WHvGetVirtualProcessorCounters
10. WHvGetVirtualProcessorInterruptControllerState
11. WHvGetVirtualProcessorRegisters
12. WHvGetVirtualProcessorXsaveState
13. WHvMapGpaRange
14. WHvQueryGpaRangeDirtyBitmap
15. WHvRequestInterrupt
16. WHvResumePartitionTime
17. WHvRunVirtualProcessor
18 WHvSetPartitionProperty
19. WHvSetVirtualProcessorInterruptControllerState
20. WHvSetVirtualProcessorRegisters
21. WHvSetVirtualProcessorXsaveState
22. WHvSetupPartition
23. WHvSuspendPartitionTime
24. WHvTranslateGva
25 WHvUnmapGpaRange
WinHVPlatform.dll
build:10.0.17134.1
Windows 10, build 1803
1. WHvCancelRunVirtualProcessor
2. WHvCreatePartition
3 .WHvCreateVirtualProcessor
4. WHvDeletePartition
5. WHvDeleteVirtualProcessor
6. WHvGetCapability
7. WHvGetPartitionProperty
8. WHvGetVirtualProcessorRegisters
9. WHvMapGpaRange
10. WHvRunVirtualProcessor
11. WHvSetPartitionProperty
12. WHvSetVirtualProcessorRegisters
13. WHvSetupPartition
14. WHvTranslateGva
15. WHvUnmapGpaRange
WinHVPlatform.dll
build:10.0.18362.267
Windows 10, build 1903
1. WHvCancelRunVirtualProcessor
2. WHvCreatePartition
3. WHvCreateVirtualProcessor
4. WHvDeletePartition
5. WHvDeleteVirtualProcessor
6. WHvGetCapability
7. WHvGetPartitionCounters
8. WHvGetPartitionProperty
9. WHvGetVirtualProcessorCounters
10. WHvGetVirtualProcessorInterruptControllerState
11. WHvGetVirtualProcessorRegisters
12. WHvGetVirtualProcessorXsaveState
13. WHvMapGpaRange
14. WHvQueryGpaRangeDirtyBitmap
15. WHvRequestInterrupt
16. WHvResumePartitionTime
17. WHvRunVirtualProcessor
18. WHvSetPartitionProperty
19. WHvSetVirtualProcessorInterruptControllerState
20. WHvSetVirtualProcessorRegisters
21. WHvSetVirtualProcessorXsaveState
22. WHvSetupPartition
23. WHvSuspendPartitionTime
24. WHvTranslateGva
25. WHvUnmapGpaRange
WinHVPlatform.dll
build:10.0.18362.476
Windows 10, build 1909
1. WHvCancelRunVirtualProcessor
2. WHvCreatePartition
3. WHvCreateVirtualProcessor
4. WHvDeletePartition
5. WHvDeleteVirtualProcessor
6. WHvGetCapability
7. WHvGetPartitionCounters
8. WHvGetPartitionProperty
9. WHvGetVirtualProcessorCounters
10. WHvGetVirtualProcessorInterruptControllerState
11. WHvGetVirtualProcessorRegisters
12. WHvGetVirtualProcessorXsaveState
13. WHvMapGpaRange
14. WHvQueryGpaRangeDirtyBitmap
15. WHvRequestInterrupt
16. WHvResumePartitionTime
17. WHvRunVirtualProcessor
18. WHvSetPartitionProperty
19. WHvSetVirtualProcessorInterruptControllerState
20. WHvSetVirtualProcessorRegisters
21. WHvSetVirtualProcessorXsaveState
22. WHvSetupPartition
23. WHvSuspendPartitionTime
24. WHvTranslateGva
25. WHvUnmapGpaRange
WinHVPlatform.dll
build:10.0.19041.264
Windows 10 20H1 (2004)
1. WHvCancelRunVirtualProcessor
2. WHvCreatePartition
3. WHvCreateVirtualProcessor
4. WHvDeletePartition
5. WHvDeleteVirtualProcessor
6. WHvGetCapability
7. WHvGetPartitionCounters
8. WHvGetPartitionProperty
9. WHvGetVirtualProcessorCounters
10. WHvGetVirtualProcessorInterruptControllerState
11. WHvGetVirtualProcessorInterruptControllerState2
12. WHvGetVirtualProcessorRegisters
13. WHvGetVirtualProcessorXsaveState
14. WHvMapGpaRange
15. WHvQueryGpaRangeDirtyBitmap
16. WHvRegisterPartitionDoorbellEvent
17. WHvRequestInterrupt
18. WHvResumePartitionTime
19. WHvRunVirtualProcessor
20. WHvSetPartitionProperty
21. WHvSetVirtualProcessorInterruptControllerState
22. WHvSetVirtualProcessorInterruptControllerState2
23. WHvSetVirtualProcessorRegisters
24. WHvSetVirtualProcessorXsaveState
25. WHvSetupPartition
26. WHvSuspendPartitionTime
27. WHvTranslateGva
28. WHvUnmapGpaRange
29. WHvUnregisterPartitionDoorbellEvent
WinHVPlatform.dll (same as 20H1)
build:10.0.19041.264
Windows 10 20H2, build 10.0.19042.508
1. WHvCancelRunVirtualProcessor
2. WHvCreatePartition
3. WHvCreateVirtualProcessor
4. WHvDeletePartition
5. WHvDeleteVirtualProcessor
6. WHvGetCapability
7. WHvGetPartitionCounters
8. WHvGetPartitionProperty
9. WHvGetVirtualProcessorCounters
10. WHvGetVirtualProcessorInterruptControllerState
11. WHvGetVirtualProcessorInterruptControllerState2
12. WHvGetVirtualProcessorRegisters
13. WHvGetVirtualProcessorXsaveState
14. WHvMapGpaRange
15. WHvQueryGpaRangeDirtyBitmap
16. WHvRegisterPartitionDoorbellEvent
17. WHvRequestInterrupt
18. WHvResumePartitionTime
19. WHvRunVirtualProcessor
20. WHvSetPartitionProperty
21. WHvSetVirtualProcessorInterruptControllerState
22. WHvSetVirtualProcessorInterruptControllerState2
23. WHvSetVirtualProcessorRegisters
24. WHvSetVirtualProcessorXsaveState
25. WHvSetupPartition
26. WHvSuspendPartitionTime
27. WHvTranslateGva
28. WHvUnmapGpaRange
29. WHvUnregisterPartitionDoorbellEvent
Hyper-V Hypervisor User-Mode API Library (WinHvPlatform.dll)
functionality evolution.
Windows 10 and Windows 11
- new API (in compare with previous version)
- new API (in compare with previous version)
WinHVPlatform.dll
build:10.0.20257.1
Windows 10 preview, build 21387
1. WHvAcceptPartitionMigration
2. WHvAdviseGpaRange
3. WHvAllocateVpciResource
4. WHvCancelPartitionMigration
5. WHvCancelRunVirtualProcessor
6. WHvCompletePartitionMigration
7. WHvCreateNotificationPort
8. WHvCreatePartition
9. WHvCreateTrigger
10. WHvCreateVirtualProcessor
11. WHvCreateVirtualProcessor2
12. WHvCreateVpciDevice
13. WHvDeleteNotificationPort
14. WHvDeletePartition
15. WHvDeleteTrigger
16. WHvDeleteVirtualProcessor
17. WHvDeleteVpciDevice
18. WHvGetCapability
19. WHvGetInterruptTargetVpSet
20. WHvGetPartitionCounters
21. WHvGetPartitionProperty
22. WHvGetVirtualProcessorCounters
23. WHvGetVirtualProcessorCpuidOutput
24. WHvGetVirtualProcessorInterruptControllerState
25. WHvGetVirtualProcessorInterruptControllerState2
26. WHvGetVirtualProcessorRegisters
27. WHvGetVirtualProcessorState
28. WHvGetVirtualProcessorXsaveState
29. WHvGetVpciDeviceInterruptTarget
30. WHvGetVpciDeviceNotification
31. WHvGetVpciDeviceProperty
32. WHvMapGpaRange
33. WHvMapGpaRange2
34. WHvMapVpciDeviceInterrupt
35. WHvMapVpciDeviceMmioRanges
36. WHvPostVirtualProcessorSynicMessage
37. WHvQueryGpaRangeDirtyBitmap
38. WHvReadGpaRange
39. WHvReadVpciDeviceRegister
40. WHvRegisterPartitionDoorbellEvent
41. WHvRequestInterrupt
42. WHvRequestVpciDeviceInterrupt
43. WHvResetPartition
44. WHvResumePartitionTime
45. WHvRetargetVpciDeviceInterrupt
46. WHvRunVirtualProcessor
47. WHvSetNotificationPortProperty
48. WHvSetPartitionProperty
49. WHvSetVirtualProcessorInterruptControllerState
50. WHvSetVirtualProcessorInterruptControllerState2
51. WHvSetVirtualProcessorRegisters
52. WHvSetVirtualProcessorState
53. WHvSetVirtualProcessorXsaveState
54. WHvSetVpciDevicePowerState
55. WHvSetupPartition
56. WHvSignalVirtualProcessorSynicEvent
57. WHvStartPartitionMigration
58. WHvSuspendPartitionTime
59. WHvTranslateGva
60. WHvUnmapGpaRange
61. WHvUnmapVpciDeviceInterrupt
62. WHvUnmapVpciDeviceMmioRanges
63. WHvUnregisterPartitionDoorbellEvent
64. WHvUpdateTriggerParameters
65. WHvWriteGpaRange
66. WHvWriteVpciDeviceRegister
WinHVPlatform.dll (same as 20H1)
build:10.0.19041.264
Windows 10 21H1, build 10.0.19043.985
1. WHvCancelRunVirtualProcessor
2. WHvCreatePartition
3. WHvCreateVirtualProcessor
4. WHvDeletePartition
5. WHvDeleteVirtualProcessor
6. WHvGetCapability
7. WHvGetPartitionCounters
8. WHvGetPartitionProperty
9. WHvGetVirtualProcessorCounters
10. WHvGetVirtualProcessorInterruptControllerState
11. WHvGetVirtualProcessorInterruptControllerState2
12. WHvGetVirtualProcessorRegisters
13. WHvGetVirtualProcessorXsaveState
14. WHvMapGpaRange
15. WHvQueryGpaRangeDirtyBitmap
16. WHvRegisterPartitionDoorbellEvent
17. WHvRequestInterrupt
18. WHvResumePartitionTime
19. WHvRunVirtualProcessor
20. WHvSetPartitionProperty
21. WHvSetVirtualProcessorInterruptControllerState
22. WHvSetVirtualProcessorInterruptControllerState2
23. WHvSetVirtualProcessorRegisters
24. WHvSetVirtualProcessorXsaveState
25. WHvSetupPartition
26. WHvSuspendPartitionTime
27. WHvTranslateGva
28. WHvUnmapGpaRange
29. WHvUnregisterPartitionDoorbellEvent
WinHVPlatform.dll
build:10.0.20257.1
Windows 10 21H1, build 20257
1. WHvAdviseGpaRange
2. WHvAllocateVpciResource
3. WHvCancelRunVirtualProcessor
4. WHvCreatePartition
5. WHvCreateTrigger
6. WHvCreateVirtualProcessor
7. WHvCreateVpciDevice
8. WHvDeletePartition
9. WHvDeleteTrigger
10. WHvDeleteVirtualProcessor
11. WHvDeleteVpciDevice
12. WHvGetCapability
13. WHvGetPartitionCounters
14. WHvGetPartitionProperty
15. WHvGetVirtualProcessorCounters
16. WHvGetVirtualProcessorInterruptControllerState
17. WHvGetVirtualProcessorInterruptControllerState2
18. WHvGetVirtualProcessorRegisters
19. WHvGetVirtualProcessorState
20. WHvGetVirtualProcessorXsaveState
21. WHvGetVpciDeviceInterruptTarget
22. WHvGetVpciDeviceProperty
23. WHvMapGpaRange
24. WHvMapVpciDeviceInterrupt
25. WHvMapVpciDeviceMmioRanges
26. WHvQueryGpaRangeDirtyBitmap
27. WHvReadGpaRange
28. WHvReadVpciDeviceRegister
29. WHvRegisterPartitionDoorbellEvent
30. WHvRequestInterrupt
31. WHvRequestVpciDeviceInterrupt
32. WHvResumePartitionTime
33. WHvRetargetVpciDeviceInterrupt
34. WHvRunVirtualProcessor
35. WHvSetPartitionProperty
36. WHvSetVirtualProcessorInterruptControllerState
37. WHvSetVirtualProcessorInterruptControllerState2
38. WHvSetVirtualProcessorRegisters
39. WHvSetVirtualProcessorState
40. WHvSetVirtualProcessorXsaveState
41. WHvSetVpciDevicePowerState
42. WHvSetupPartition
43. WHvSignalSynicEvent (removed in next version)
44. WHvSuspendPartitionTime
45. WHvTranslateGva
46. WHvUnmapGpaRange
47. WHvUnmapVpciDeviceInterrupt
48. WHvUnmapVpciDeviceMmioRanges
49. WHvUnregisterPartitionDoorbellEvent
50. WHvUpdateTriggerParameters
51. WHvWriteGpaRange
52. WHvWriteVpciDeviceRegister
WinHVPlatform.dll
build:10.0.22000.71
Windows 11 21H1
1. WHvAcceptPartitionMigration
2. WHvAdviseGpaRange
3. WHvAllocateVpciResource
4. WHvCancelPartitionMigration
5. WHvCancelRunVirtualProcessor
6. WHvCompletePartitionMigration
7. WHvCreateNotificationPort
8. WHvCreatePartition
9. WHvCreateTrigger
10. WHvCreateVirtualProcessor
11. WHvCreateVirtualProcessor2
12. WHvCreateVpciDevice
13. WHvDeleteNotificationPort
14. WHvDeletePartition
15. WHvDeleteTrigger
16. WHvDeleteVirtualProcessor
17. WHvDeleteVpciDevice
18. WHvGetCapability
19. WHvGetInterruptTargetVpSet
20. WHvGetPartitionCounters
21. WHvGetPartitionProperty
22. WHvGetVirtualProcessorCounters
23. WHvGetVirtualProcessorCpuidOutput
24. WHvGetVirtualProcessorInterruptControllerState
25. WHvGetVirtualProcessorInterruptControllerState2
26. WHvGetVirtualProcessorRegisters
27. WHvGetVirtualProcessorState
28. WHvGetVirtualProcessorXsaveState
29. WHvGetVpciDeviceInterruptTarget
30. WHvGetVpciDeviceNotification
31. WHvGetVpciDeviceProperty
32. WHvMapGpaRange
33. WHvMapGpaRange2
34. WHvMapVpciDeviceInterrupt
35. WHvMapVpciDeviceMmioRanges
36. WHvPostVirtualProcessorSynicMessage
37. WHvQueryGpaRangeDirtyBitmap
38. WHvReadGpaRange
39. WHvReadVpciDeviceRegister
40. WHvRegisterPartitionDoorbellEvent
41. WHvRequestInterrupt
42. WHvRequestVpciDeviceInterrupt
43. WHvResetPartition
44. WHvResumePartitionTime
45. WHvRetargetVpciDeviceInterrupt
46. WHvRunVirtualProcessor
47. WHvSetNotificationPortProperty
48. WHvSetPartitionProperty
49. WHvSetVirtualProcessorInterruptControllerState
50. WHvSetVirtualProcessorInterruptControllerState2
51. WHvSetVirtualProcessorRegisters
52. WHvSetVirtualProcessorState
53. WHvSetVirtualProcessorXsaveState
54. WHvSetVpciDevicePowerState
55. WHvSetupPartition
56. WHvSignalVirtualProcessorSynicEvent
57. WHvStartPartitionMigration
58. WHvSuspendPartitionTime
59. WHvTranslateGva
60. WHvUnmapGpaRange
61. WHvUnmapVpciDeviceInterrupt
62. WHvUnmapVpciDeviceMmioRanges
63. WHvUnregisterPartitionDoorbellEvent
64. WHvUpdateTriggerParameters
65. WHvWriteGpaRange
66. WHvWriteVpciDeviceRegister
WinHVPlatform.dll
build:10.0.22621.1
Windows 11 22H2
1. WHvAcceptPartitionMigration
2. WHvAdviseGpaRange
3. WHvAllocateVpciResource
4. WHvCancelPartitionMigration
5. WHvCancelRunVirtualProcessor
6. WHvCompletePartitionMigration
7. WHvCreateNotificationPort
8. WHvCreatePartition
9. WHvCreateTrigger
10. WHvCreateVirtualProcessor
11. WHvCreateVirtualProcessor2
12. WHvCreateVpciDevice
13. WHvDeleteNotificationPort
14. WHvDeletePartition
15. WHvDeleteTrigger
16. WHvDeleteVirtualProcessor
17. WHvDeleteVpciDevice
18. WHvGetCapability
19. WHvGetInterruptTargetVpSet
20. WHvGetPartitionCounters
21. WHvGetPartitionProperty
22. WHvGetVirtualProcessorCounters
23. WHvGetVirtualProcessorCpuidOutput
24. WHvGetVirtualProcessorInterruptControllerState
25. WHvGetVirtualProcessorInterruptControllerState2
26. WHvGetVirtualProcessorRegisters
27. WHvGetVirtualProcessorState
28. WHvGetVirtualProcessorXsaveState
29. WHvGetVpciDeviceInterruptTarget
30. WHvGetVpciDeviceNotification
31. WHvGetVpciDeviceProperty
32. WHvMapGpaRange
33. WHvMapGpaRange2
34. WHvMapVpciDeviceInterrupt
35. WHvMapVpciDeviceMmioRanges
36. WHvPostVirtualProcessorSynicMessage
37. WHvQueryGpaRangeDirtyBitmap
38. WHvReadGpaRange
39. WHvReadVpciDeviceRegister
40. WHvRegisterPartitionDoorbellEvent
41. WHvRequestInterrupt
42. WHvRequestVpciDeviceInterrupt
43. WHvResetPartition
44. WHvResumePartitionTime
45. WHvRetargetVpciDeviceInterrupt
46. WHvRunVirtualProcessor
47. WHvSetNotificationPortProperty
48. WHvSetPartitionProperty
49. WHvSetVirtualProcessorInterruptControllerState
50. WHvSetVirtualProcessorInterruptControllerState2
51. WHvSetVirtualProcessorRegisters
52. WHvSetVirtualProcessorState
53. WHvSetVirtualProcessorXsaveState
54. WHvSetVpciDevicePowerState
55. WHvSetupPartition
56. WHvSignalVirtualProcessorSynicEvent
57. WHvStartPartitionMigration
58. WHvSuspendPartitionTime
59. WHvTranslateGva
60. WHvUnmapGpaRange
61. WHvUnmapVpciDeviceInterrupt
62. WHvUnmapVpciDeviceMmioRanges
63. WHvUnregisterPartitionDoorbellEvent
64. WHvUpdateTriggerParameters
65. WHvWriteGpaRange
66. WHvWriteVpciDeviceRegister