Why do we have pagewalker cache ?

From the description " X86: *Add* *L1* *caches* for the *TLB* *walkers*.
Small *L1* *caches* are connected to the *TLB* *walkers* when *caches *are
used. This allows them to participate in the coherence protocol properly."

Does this means , by using pagewalker cache TLBs can communicate with
caches in coherence protocol ?

Thanks in advance
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