Are you sure that system call actually enters the kernel mode? It might be one o... | Hacker News

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		whatevaa 25 days ago \| parent \| context \| favorite \| on: Fast UDP I/O for Firefox in Rust Are you sure that system call actually enters the kernel mode? It might be one of the special ones where kernel serves it from user space, forgot their name.

ori_b 25 days ago | [–]

Those are only served from userspace if you call the libc wrappers. The syscall() function bypasses the wrappers.

Cloudef 25 days ago | [–]

VDSO

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