When a CPU interrupt occurs, the process is stopped and acknowledged, and the CPU moves on to the next one. Why shouldn't the process be stopped while it's still in progress? Why can't we just finish the execution and clean up instead of dealing with the problem after the fact?

Systems Architecture
7th Edition
ISBN:9781305080195
Author:Stephen D. Burd
Publisher:Stephen D. Burd
Chapter11: Operating Systems
Section: Chapter Questions
Problem 23VE
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When a CPU interrupt occurs, the process is stopped and acknowledged, and the CPU moves on to the next one.
Why shouldn't the process be stopped while it's still in progress?
Why can't we just finish the execution and clean up instead of dealing with the problem after the fact? 

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