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I stand corrected: AArch64 is the only other architecture apart from x86_64 to have a target platform that is a Tier-1 target platform.

Attaining this ‘badge’ is significant for Rust’s future though in a world where AArch64 Linux is astonishingly predominant especially in areas where Rust’s safety properties are a good fit.

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And just some clarification. This is only the first ARM Arch to get promoted to Tier-1. The idea is to first get this one to Tier-1 as it's the most obvious to do, and other ARM platforms will follow shortly. For example Apple ARM Archs I expect to soon follow.

Absolutely! One of the key goals I had in the RFC proposal was to effectively pipeclean the path for other non-x86_64 archs, not just AArch64.

For AArch64, you are absolutely right, there's a lot of useful targets already ascending the Tiers, aiming to get to Tier-1.

All this will help AArch64 in particular to ge the top-class CI focus that the Rust community has built. Bodes very well for safety and security sensitive ecosystems, IMO.

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