OK, I really don't know anything about assembly/OSes, but if the price of going to kernel mode with sysenter/syscall is smaller than a not that pricey(the article says it's less than a single 64-bit integer division), does that mean microkernels can utilize that to improve performance?
What are the shortcomings of the method compared to interrupts?
What are the shortcomings of the method compared to interrupts?