typedef struct _WHEA_GENERIC_PROCESSOR_ERROR
{
     UINT64 ValidBits;
     UCHAR ProcessorType;
     UCHAR InstructionSet;
     UCHAR ErrorType;
     UCHAR Operation;
     UCHAR Flags;
     UCHAR Level;
     WORD Reserved;
     UINT64 CPUVersion;
     UCHAR CPUBrandString[128];
     UINT64 ProcessorId;
     UINT64 TargetAddress;
     UINT64 RequestorId;
     UINT64 ResponderId;
     UINT64 InstructionPointer;
} WHEA_GENERIC_PROCESSOR_ERROR, *PWHEA_GENERIC_PROCESSOR_ERROR;

Windows Vista Kernel Structures