about TLB

[DrDnar]

I understand that the TLB caches PTE translations. In the x86 system, the TLB is transparent; software only sees the page table. What does PowerPC do different? Why can't Dolphin simply ignore the TLB, as would be possible on x86? What do games do that they want to screw directly with the PTE and not the page table? Since paging is primarily used for virtual memory, and the Gamecube has no virtual memory, what do the games want to use it for anyway?