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WHEA_XPF_BUS_CHECK union

The WHEA_XPF_BUS_CHECK union describes bus error information for an x86 or x64 processor.

Syntax


typedef union _WHEA_XPF_BUS_CHECK {
  struct {
    ULONGLONG TransactionTypeValid  :1;
    ULONGLONG OperationValid  :1;
    ULONGLONG LevelValid  :1;
    ULONGLONG ProcessorContextCorruptValid  :1;
    ULONGLONG UncorrectedValid  :1;
    ULONGLONG PreciseIPValid  :1;
    ULONGLONG RestartableIPValid  :1;
    ULONGLONG OverflowValid  :1;
    ULONGLONG ParticipationValid  :1;
    ULONGLONG TimeoutValid  :1;
    ULONGLONG AddressSpaceValid  :1;
    ULONGLONG ReservedValid  :5;
    ULONGLONG TransactionType  :2;
    ULONGLONG Operation  :4;
    ULONGLONG Level  :3;
    ULONGLONG ProcessorContextCorrupt  :1;
    ULONGLONG Uncorrected  :1;
    ULONGLONG PreciseIP  :1;
    ULONGLONG RestartableIP  :1;
    ULONGLONG Overflow  :1;
    ULONGLONG Participation  :2;
    ULONGLONG Timeout  :1;
    ULONGLONG AddressSpace  :2;
    ULONGLONG Reserved  :29;
  };
  ULONGLONG XpfBusCheck;
} WHEA_XPF_BUS_CHECK, *PWHEA_XPF_BUS_CHECK;

Members

TransactionTypeValid

A single bit that indicates that the TransactionType member contains valid data.

OperationValid

A single bit that indicates that the Operation member contains valid data.

LevelValid

A single bit that indicates that the Level member contains valid data.

ProcessorContextCorruptValid

A single bit that indicates that the ProcessorContextCorrupt member contains valid data.

UncorrectedValid

A single bit that indicates that the Uncorrected member contains valid data.

PreciseIPValid

A single bit that indicates that the PreciseIP member contains valid data.

RestartableIPValid

A single bit that indicates that the RestartableIP member contains valid data.

OverflowValid

A single bit that indicates that the Overflow member contains valid data.

ParticipationValid

A single bit that indicates that the Participation member contains valid data.

TimeoutValid

A single bit that indicates that the Timeout member contains valid data.

AddressSpaceValid

A single bit that indicates that the AddressSpace member contains valid data.

ReservedValid

Reserved for system use.

TransactionType

The type of transaction that was in progress when the error occurred. Possible values are:

XPF_BUS_CHECK_TRANSACTIONTYPE_INSTRUCTION

A processor instruction transaction.

XPF_BUS_CHECK_TRANSACTIONTYPE_DATAACCESS

A data access transaction.

XPF_BUS_CHECK_TRANSACTIONTYPE_GENERIC

A generic transaction.

This member contains valid data only if the TransactionTypeValid bit is set.

Operation

The type of bus operation that caused the error. Possible values are:

XPF_BUS_CHECK_OPERATION_GENERIC

The type of operation cannot be determined.

XPF_BUS_CHECK_OPERATION_GENREAD

A generic read operation.

XPF_BUS_CHECK_OPERATION_GENWRITE

A generic write operation.

XPF_BUS_CHECK_OPERATION_DATAREAD

A data read operation.

XPF_BUS_CHECK_OPERATION_DATAWRITE

A data write operation.

XPF_BUS_CHECK_OPERATION_INSTRUCTIONFETCH

An instruction fetch operation.

XPF_BUS_CHECK_OPERATION_PREFETCH

An instruction prefetch operation.

This member contains valid data only if the OperationValid bit is set.

Level

The level of the bus hierarchy where the error occurred.

This member contains valid data only if the LevelValid bit is set.

ProcessorContextCorrupt

A single bit that indicates that the processor context might have been corrupted.

This member contains valid data only if the ProcessorContextCorruptValid bit is set.

Uncorrected

A single bit that indicates that the error has not been corrected.

This member contains valid data only if the UncorrectedValid bit is set.

PreciseIP

A single bit that indicates that the instruction pointer that is specified in the InstructionPointer member of the WHEA_XPF_PROCINFO structure that contains this WHEA_XPF_BUS_CHECK union is directly associated with the error.

This member contains valid data only if the PreciseIPValid bit is set.

RestartableIP

A single bit that indicates that program execution can be restarted reliably at the instruction pointer that is specified in the InstructionPointer member of the WHEA_XPF_PROCINFO union that contains this WHEA_XPF_BUS_CHECK structure.

This member contains valid data only if the RestartableIPValid bit is set.

Overflow

A single bit that indicates that an error overflow occurred.

This member contains valid data only if the OverflowValid bit is set.

Participation

The type of participation by the local processor. Possible values are:

XPF_BUS_CHECK_PARTICIPATION_PROCORIGINATED

The local processor originated the request.

XPF_BUS_CHECK_PARTICIPATION_PROCRESPONDED

The local processor responded to the request.

XPF_BUS_CHECK_PARTICIPATION_PROCOBSERVED

The local processor observed the request.

XPF_BUS_CHECK_PARTICIPATION_GENERIC

A generic value for this member if none of the other values are applicable.

This member contains valid data only if the ParticipationValid bit is set.

Timeout

A single bit that indicates that a timeout occurred.

This member contains valid data only if the TimeoutValid bit is set.

AddressSpace

The type of address space that was associated with the transaction that caused the error. Possible values are:

XPF_BUS_CHECK_ADDRESS_MEMORY

Memory address space.

XPF_BUS_CHECK_ADDRESS_RESERVED

Reserved.

XPF_BUS_CHECK_ADDRESS_IO

I/O address space.

XPF_BUS_CHECK_ADDRESS_OTHER

An unclassified type of address space.

This member contains valid data only if the AddressSpaceValid bit is set.

Reserved

Reserved for system use.

XpfBusCheck

A ULONGLONG representation of the contents of the WHEA_XPF_BUS_CHECK union.

Remarks

If the CheckInfoId member of a WHEA_XPF_PROCINFO structure contains WHEA_BUSCHECK_GUID, the CheckInfo member of the WHEA_XPF_PROCINFO structure contains a WHEA_XPF_BUS_CHECK union.

Requirements

Version

Supported in Windows Server 2008, Windows Vista SP1, and later versions of Windows.

Header

Ntddk.h (include Ntddk.h)

See also

WHEA_XPF_PROCINFO

 

 

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