Are you ok with your Manager knowing your salary?

In general HR's say we shouldn't discuss our salaries with our colleagues and at the same time they allow your manager to discuss the salary during appraisal.

A manager should only be allowed to tell %age increase, not the actual salary.

As a manager, would you share your salary with your reportee ? If not, why should you know their salary?

Either make salaries transparent, everyone knows each other's salary or nobody should know anyone's salary except HR.