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It is maybe a good idea if performance is a concern, as it bypasses the context switch (from user mode
to kernel mode and back) which is an expensive (time-consuming) operation, while providing a basic
level of protection from badly written programmes. However, it would be stupid not to put security checks
in the kernel libraries because the user-land C libraries can be freely attacked by malicious users and
programmes.
Titany answered the question on April 25, 2022 at 13:50
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