The mechanism to signal the kernel is a software interrupt Incur an exception and the system will switch to kernel mode and execute the exception handlerwhy call it exception should change it another

No, it should not be changed to another name. The term "exception" is a commonly used term in computer science and refers to an event that interrupts the normal flow of a program or system. In the context of signaling the kernel, an exception is an appropriate term because it describes an event that causes the system to switch to kernel mode and execute the necessary code to handle the request. Changing the term to something else may cause confusion and make it more difficult for developers to understand the mechanism