Answer by Brendan for How does the CPU decide what core should handle a...
how does the CPU decide what core to deliver a hardware interrupt to before the OS gets involved? Before the OS gets involved; there is only one CPU running (the rest of the CPUs are stuck in a "wait...
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This is done by the I/O-APIC. APIC stands for Advanced Programmable Interrupt Controller. A quote from the OSDev WiKi: In addition, there is an I/O APIC (e.g. intel 82093AA) that is part of the chipset...
View ArticleHow does the CPU decide what core should handle a hardware interrupt?
The question Which processor would execute hardware interrupt in a muticore system and its answers seem to focus on this from the point of view of the operating system, but how does the CPU decide...
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