The TLB lookup is combinational -- it evaluates in the same half-cycle as the limit check, requiring no additional clock. The common case (TLB hit, no page boundary crossing) adds zero overhead to a memory access. This is why the Segment Descriptor Cache and Page Cache (TLB) together occupy such substantial die area -- they are the fast path that makes protected mode competitive with real mode.
xAI’s Grok responded to questions about the new app on X, confirming other details, like the app’s age rating, which will be the same as X (17+ on the iOS App Store), and that chats would sync to the X app and the chat.x.com web app, which launched in December 2025.
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