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//0x20 bytes (sizeof)
struct _MI_SYSTEM_PTE_TYPE
{
    struct _MMPTE* FirstFreePte;                                            //0x0
    ULONG* FailureCount;                                                    //0x8
    struct _KGUARDED_MUTEX* GlobalMutex;                                    //0x10
    volatile ULONG TbFlushTimeStamp;                                        //0x18
};