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//0x8 bytes (sizeof)
struct _KTB_FLUSH_VA
{
    union
    {
        ULONGLONG NumberOfEntries:10;                                       //0x0
        ULONGLONG PageSize:2;                                               //0x0
        VOID* Va;                                                           //0x0
        ULONGLONG VaLong;                                                   //0x0
    } u1;                                                                   //0x0
};