Sun Microelectronics
24
UltraSPARC User’s Manual
Figure 4-3 Software View of the UltraSPARC MMU
Aliasing between pages of different size (when multiple VAs map to the same
PA) may take place, as with the SPARC-V8 Reference MMU. The reverse case,
when multiple mappings from one VA/context to multiple PAs produce a multi-
ple TLB match, is not detected in hardware; it produces undefined results.
Note: The hardware ensures the physical reliability of the TLB on multiple
matches.
Translation
Look-aside
Buffers
Translation
Buffer
Software
Translation
Table
MMU Memory O/S Data Structure
Storage
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