Page Fault Flow Diagram

Visual model of what occurs when a process accesses memory that is not currently mapped into physical RAM.

Process Executes
        |
        v

CPU References Address
        |
        v

Address Present?
   +---------+
   |  YES    |------> Continue Execution
   +---------+

        |
        NO
        v

Page Fault Exception
        |
        v

Kernel Fault Handler
        |
        v

Page Located?
   +---------+
   |  YES    |
   +---------+
        |
        v

Load Page Into RAM
        |
        v

Update Page Tables
        |
        v

Retry Instruction
        |
        v

Continue Execution

How to Read This

Each step represents a major transition from CPU execution, to operating system intervention, and back to normal execution.

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