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HvCallStartVirtualProcessor

  • Article

HvCallStartVirtualProcessor is an enlightened method for starting a virtual processor. It is functionally equivalent to traditional INIT-based methods, except that the VP can start with a desired register state.

This is the only method for starting a VP in a non-zero VTL.

Interface

HV_STATUS
HvCallStartVirtualProcessor(
   _In_ HV_PARTITION_ID PartitionId,
   _In_ HV_VP_INDEX VpIndex,
   _In_ HV_VTL TargetVtl,
   _In_ HV_INITIAL_VP_CONTEXT VpContext
   );

Call Code

0x0099 (Simple)

Input Parameters

Name Offset Size Information Provided
PartitionId 0 8 Partition
VpIndex 8 4 VP Index to start. To get the VP index from an APIC ID, use HvGetVpIndexFromApicId.
TargetVtl 12 1 Target VTL
VpContext 16 224 Specifies the initial context in which the VP should start.

Return Values

Status code Error Condition
HV_STATUS_ACCESS_DENIED Access denied
HV_STATUS_INVALID_PARTITION_ID The specified partition ID is invalid.
HV_STATUS_INVALID_VP_INDEX The virtual processor specified by HV_VP_INDEX is invalid.
HV_STATUS_INVALID_REGISTER_VALUE The supplied register value is invalid.
HV_STATUS_INVALID_VP_STATE A virtual processor is not in the correct state for the performance of the indicated operation.
HV_STATUS_INVALID_PARTITION_STATE The specified partition is not in the “active” state.
HV_STATUS_INVALID_VTL_STATE The VTL state conflicts with the requested operation.

See also

HV_INITIAL_VP_CONTEXT