MiConvertEntireLargePageToSmall

UINT64 __stdcall MiConvertEntireLargePageToSmall(
        KQUEUE *Queue,
        INT8 WaitMode,
        UINT8 Alertable,
        LARGE_INTEGER *Timeout,
        LIST_ENTRY **EntryArray,
        UINT64 a6){
  int v6; 
  __int64 v8; 
  _QWORD *v9; 
  int v10; 
  char *v11; 
  unsigned int v12; 
  UINT64 v13; 
  unsigned __int8 CurrentIrql; 
  BOOL ShouldYieldProcessor; 
  UINT64 result; 
  UINT64 BlinkValue; 
  UINT64 SpinCount; 
  INT64 a4; 
  v6 = Alertable;
  v8 = MiLargePageSizes[WaitMode];
  v9 = (_QWORD *)a6;
  v10 = 0;
  v11 = (char *)Queue + 48 * v8;
  v12 = 0;
  v13 = v8 + ((char *)Queue - (char *)MmGetPfnDb()) / 48;
  BlinkValue = 0xFFFFFFFFFi64;
  LODWORD(a4) = (int)Timeout <= 1;
  if( Alertable == 1 )
  {
    v12 = ((_DWORD)Timeout != 0) + 513;
    if( a6 )
      *(_QWORD *)a6 = 0i64;
  }
  CurrentIrql = KeGetCurrentIrql();
  __writecr8(2ui64);
  do
  {
    v11 -= 48;
    LODWORD(SpinCount) = v10;
    --v13;
    if( _interlockedbittestandset64((volatile signed __int32 *)v11 + 6, 0x3Fui64) )
    {
      do
      {
        do
          KeYieldProcessorEx(&SpinCount);
        while( *((__int64 *)v11 + 3) < 0 );
      }
      while( _interlockedbittestandset64((volatile signed __int32 *)v11 + 6, 0x3Fui64) );
      v9 = (_QWORD *)a6;
    }
    MiConvertLargePfnToSmall((INT64)Queue, (INT64)v11, Alertable, (unsigned int)a4);
    v10 = 0;
    if( v6 )
    {
      if( v6 == 1 )
      {
        if( v11 == (char *)EntryArray )
        {
          *(_QWORD *)v11 = 0i64;
          *((_QWORD *)v11 + 1) |= 0x8000000000000000ui64;
          *((_QWORD *)v11 + 2) = ZeroPte;
          if( (v12 & 1) != 0 )
          {
            if( (MiFlags & 0x80u) != 0 && (++dword_140C4E50C & MmPageValidationFrequency) == 0 )
            {
              MiArePageContentsZero((PVOID)v13);
LABEL_25:
              v10 = 0;
            }
          }
          else
          {
            MiSetOriginalPtePfnFromFreeList((UINT64 *)v11 + 2);
          }
        }
        else if( *((_WORD *)v11 + 16) )
        {
          if( (*((_QWORD *)v11 + 3) & 0x4000000000000000i64) == 0 )
            *((_QWORD *)v11 + 3) |= 0x4000000000000000ui64;
          v11[34] |= 7u;
        }
        else
        {
          MiInsertPageInFreeOrZeroedList(v13, v12);
          v10 = 0;
          if( v9 )
            ++*v9;
        }
      }
      else if( v6 == 2 )
      {
        *((_QWORD *)v11 + 2) = ZeroPte;
        *(_QWORD *)v11 = 0i64;
        MiSetPfnBlink((_MMPFN *)v11, BlinkValue, 1ui64);
        BlinkValue = v13;
        goto LABEL_25;
      }
    }
    _InterlockedAnd64((volatile signed __int64 *)v11 + 3, 0x7FFFFFFFFFFFFFFFui64);
    if( (v13 & 0xF) == 0 && CurrentIrql < 2u )
    {
      ShouldYieldProcessor = KeShouldYieldProcessor();
      v10 = 0;
      if( ShouldYieldProcessor )
      {
        __writecr8(CurrentIrql);
        CurrentIrql = KeGetCurrentIrql();
        __writecr8(2ui64);
      }
    }
  }
  while( v11 != (char *)Queue );
  result = CurrentIrql;
  __writecr8(CurrentIrql);
  return result;
}

Referenced by: