Learn the Architecture: TrustZone for AArch64 — Arm Developer
Implementers shouldn't need to jump through these hoops. When you find yourself needing to relax or bypass spec semantics just to achieve reasonable performance, that's a sign something is wrong with the spec itself. A well-designed streaming API should be efficient by default, not require each runtime to invent its own escape hatches.
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全链路性能调优：实现成本下降 50%
that we can do it in user-space effectively gives us two stacks (one that we