MiGetLargePagesDemoteAsNeeded

INT64 __fastcall MiGetLargePagesDemoteAsNeeded(
        INT64 a1,
        UINT64 a2,
        UINT64 a3,
        UINT64 a4,
        INT64 a5,
        INT64 arg28,
        INT64 a7){
  int v7; 
  INT64 v8; 
  __int64 v9; 
  unsigned int v10; 
  unsigned int v11; 
  __int64 v12; 
  int v13; 
  __int64 *v14; 
  unsigned int v15; 
  _QWORD *v16; 
  UINT64 v17; 
  unsigned int v18; 
  INT64 v19; 
  INT64 result; 
  signed __int32 v21; 
  INT64 v22; 
  INT64 v23; 
  UINT64 v24; 
  INT64 a6; 
  INT64 v26; 
  INT64 v27; 
  INT64 v28[2]; 
  UINT64 v30; 
  UINT64 v31; 
  v31 = a4;
  v30 = a3;
  v7 = a2;
  v8 = a1;
  v9 = *(_QWORD *)(a1 + 16) + 4544i64 * (unsigned int)a2;
  if( !*(_QWORD *)(v9 + 4176) && *(_DWORD *)InitializationPhase )
    return 0i64;
  v10 = arg28;
  v11 = 0;
  v12 = 0i64;
  v13 = !(arg28 & 1) + 1;
  if( (arg28 & 1) == 0 )
    v10 = arg28 | 1;
  while( 1 )
  {
    v14 = MiLargePageSizes;
    v15 = 0;
    v16 = (_QWORD *)(v9 + 16 * (v12 + 1));
    do
    {
      v17 = *v14;
      if( a3 >= *v14 )
      {
        if( v17 < a4 )
          break;
        v18 = v15;
        if( v11 )
          v18 = v11;
        v11 = v18;
        if( v16[1] || *v16 )
        {
          if( (_DWORD)a5 )
            v19 = a3 / v17;
          else
            v19 = 1i64;
          LODWORD(v27) = a7;
          LODWORD(v26) = 4;
          LODWORD(a6) = 0;
          LODWORD(v24) = v7;
          result = MiGetFreeZeroLargePages(v8, v15, v19, v10, v24, a6, v26, v27);
          if( result )
            return result;
          v8 = a1;
          a3 = v30;
          a4 = v31;
        }
      }
      ++v15;
      ++v14;
      v16 += 134;
    }
    while( v15 < 3 );
    if( v11 )
    {
      *(_OWORD *)v28 = 0i64;
      MiInitializePageColorBase(0i64, (unsigned int)(v7 + 1), (INT64)v28);
      v21 = _InterlockedExchangeAdd((volatile signed __int32 *)v28[0], 1u);
      LODWORD(v24) = v10;
      result = MiGetLargePage(v22, v11, (unsigned int)a7, HIDWORD(v28[1]) | (unsigned int)v21 & v28[1], v24, v23);
      if( result )
        return result;
    }
    if( !--v13 )
      return 0i64;
    v8 = a1;
    v10 &= ~1u;
    a3 = v30;
    v12 = 1i64;
    a4 = v31;
  }
}

Referenced by: