Open Loop BLDC motor control, is it possible?

[DaveElectronics6XT]

I have a BLDC motor to run at full speed for a brief time. The motor is equipped with three hall sensors. My question is, is it possible to realise the max speed control by setting the PWM duty cicle at 100% for controlling the MOSFETs, though the hall sensor commutation logic?
Will the motor spin correctly? What problem may arise by this type of control?

 

[Diver300]

If there is the commutation logic in the motor, it may work at 100% PWM.