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Re:Writing ARM64 Code for Apple Platforms by somebody_amzn on Thursday June 24, 2021 @12:55PM (#27620388)
Yeah, Meltdown did affect quite some Arm CPUs, including the Cortex-A75 too.

However, due to specific features of the Arm architecture, it was patchable without a significant performance hit.

(see this section: https://siguza.github.io/KTRR/#meltdownspectre-mitigations-1..., which made the need for actually doing a page table switch avoidable)

Re:Writing ARM64 Code for Apple Platforms by NobodyNada on Thursday June 24, 2021 @01:05PM (#27620574)
Interesting, thanks for the link!