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Comments (18)

• pdw
  The intro of this article repeats the common assertion that> ARM is the most relaxed, allowing significant hardware optimizations; and x86 is the most strict, enforcing a very strong coherency model that doesn’t allow a lot of room for optimizationbut I've seen some compelling arguments that a relaxed model doesn't necessarily have much of a benefit, https://fgiesen.wordpress.com/2026/08/25/memory-ordering-in-...
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  dagmx
  For reference , Fex is a translation framework for x86 to ARM much like Apple’s Rosetta2 and Microsoft’s Prism.Valve sponsor development as it’s also the way the new Steam Frame supports x86 games. It’s also being used (as a fork) in Crossover Beta to replace the use of Rosetta2.
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  modeless
  As noted in the article, Apple solved this problem six years ago by simply adding an x86-compatible memory ordering mode to their chip when x86 emulation became important. Yet another way Apple's chips lead the industry.
• asksomeoneelse
  Great article ! This is the kind of content I always hope to find on HN's front page.I really wonder how things are organized at Apple to allow for vertical integration to work so well. That feature alone must have involved so many people from so many different teams.