When the processor under execution is interrupted by a non-maskable interrupt it serves?

When a processor is interrupted by a non-maskable interrupt (NMI), it immediately suspends the current execution and transfers control to a predefined interrupt service routine (ISR) designed to handle the interrupt. This type of interrupt cannot be ignored or masked, ensuring that critical tasks, such as hardware failures or system errors, are addressed promptly. Once the ISR is executed, the processor typically resumes its previous task, restoring the state before the interruption. This mechanism allows for quick responses to urgent system conditions while maintaining overall system stability.