You copied the Doc URL to your clipboard.

6.14. MMU and write buffer

During any translation table walk the MMU has access to external memory. Before the table walk occurs, the write buffer has to be flushed of any related writes to avoid read-after-write hazards.

When either the instruction MMU or data MMU contains valid TLB entries that are being modified, those TLB entries must be invalidated by software, and the Write Buffer drained using the Drain Write Buffer instruction before the new section or page is accessed.