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Why Memory-Mapped I/O Feels So Different in Rust: Revision history

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18 November 2025

  • curprev 10:0810:08, 18 November 2025 PC talk contribs 8,463 bytes +8,463 Created page with "500px When you first hear memory-mapped I/O (MMIO), it sounds like some obscure OS-level trick reserved for kernel hackers. But if you’ve ever streamed a 10GB dataset without loading it all into RAM, or accessed GPU registers directly, you’ve probably used it — even if you didn’t know. In most languages, MMIO feels like a hidden performance optimization.
In Rust, it feels like a first-class primitive. And that difference is..."
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