The DFSR holds status information about the last data fault.
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DFSR format when using the Short-descriptor translation table format
| Bits | Name | Function |
| [31:14] | - | Reserved. |
| [13] | CM | Cache maintenance fault. |
| [12] | ExT | External abort type. |
| [11] | WnR | Write not Read bit. |
| [10] | FS[4] | Fault status bits. |
| [9] | LPAE | Large Physical Address Extension. |
| [8] | - | Reserved. |
| [7:4] | Domain | The domain of the fault address. |
| [3:0] | FS[3:0] | Fault status bits. |
DFSR format when using the Long-descriptor translation table format
| Bits | Name | Function |
| [31:14] | - | Reserved. |
| [13] | CM | Cache maintenance fault. |
| [12] | ExT | External abort type. |
| [11] | WnR | Write not Read bit. |
| [10] | - | Reserved. |
| [9] | LPAE | Large Physical Address Extension. |
| [8:6] | - | Reserved. |
| [5:0] | STATUS | Fault status bits. |
Consider __get_DFSR and __set_DFSR to access this register.