typedef enum _IO_ALLOCATION_ACTION                                              // 3 elements; 0x0004 Bytes
{
    KeepObject                      = 1,
    DeallocateObject                = 2,
    DeallocateObjectKeepRegisters   = 3
} IO_ALLOCATION_ACTION, * PIO_ALLOCATION_ACTION;

Return to OS-specific structures/unions/enums list.
Return to OS version list.