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//0x4 bytes (sizeof)
union _WHEA_ERROR_PACKET_FLAGS
{
    ULONG PreviousError:1;                                                  //0x0
    ULONG CriticalEvent:1;                                                  //0x0
    ULONG HypervisorError:1;                                                //0x0
    ULONG Simulated:1;                                                      //0x0
    ULONG PlatformPfaControl:1;                                             //0x0
    ULONG PlatformDirectedOffline:1;                                        //0x0
    ULONG AddressTranslationRequired:1;                                     //0x0
    ULONG AddressTranslationCompleted:1;                                    //0x0
    ULONG RecoveryOptional:1;                                               //0x0
    ULONG Reserved2:23;                                                     //0x0
    ULONG AsULONG;                                                          //0x0
};