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bee_rider10/10/20244 repliesview on HN

The M-series chips from Apple have some special hardware to help emulate x86 with near-native performance, right? I wonder if they take advantage of those features (actually I forget exactly what the features were).

I mean this is an incredible achievement either way. Everything is emulated, but they are still running AAA games. Wow.


Replies

sumuyuda10/10/2024

They are using it:

Other than the page size issue, FEX and Rosetta are comparable technologies (both are emulators, despite what Apple marketing might have you believe). Both FEX and Rosetta use the unique Apple Silicon CPU feature that is most important for x86/x86_64 emulation performance: TSO mode. Thanks to this feature, FEX can offer fast and accurate x86/x86_64 emulation on Apple Silicon systems.

From: https://docs.fedoraproject.org/en-US/fedora-asahi-remix/x86-...

saagarjha10/10/2024

No reason they can’t.

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