Are there any performance implications on such traps on x64 or ARM? IIRC, PDP11 ... | Hacker News

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		nine_k on Oct 27, 2023 \| parent \| context \| favorite \| on: OpenBSD: Removing syscall(2) from libc and kernel Are there any performance implications on such traps on x64 or ARM? IIRC, PDP11 and VAX used traps as the way to call the supervisor, and it was pretty cheap.

saagarjha on Oct 27, 2023 | [–]

You're asking the wrong questions of OpenBSD :)

nine_k on Oct 27, 2023 | | [–]

Fair! :)

But interesting nevertheless.

MBCook on Oct 27, 2023 | [–]

I think ARM (or at least ARM64) does the trap thing too.

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