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 B.4. Translation Fault Handling

 A very high-level description of the translation faults that exist and how they might be handled by hardware and software follows. Listed are the types of translation faults.

  • Page Fault – Requested data is not in memory.

  • Mapping Fault – Requested data is in memory but not mapped in the page table.

  • Protection Fault – Access to the requested data is not allowed by the protection mechanisms.

  • Segment Table Pointer Fault – Translation for the virtual segment table pointer is not in the hardware page table.

  • Accelerator Utilization Record Pointer Fault – Translation for the virtual accelerator utilization record pointer is not in the hardware page table.

  • Data Segment Fault – Segment for requested data not in the segment table.


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