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Refining Core Development Skills
Refining Core Development Skills
Mar 2, 2022 · Fundamentals

Interrupt Mechanism, PIC, APIC, and Interrupt Affinity Explained

This article explains how a CPU handles interrupts using mechanisms like the programmable interrupt controller (PIC), advanced APIC, interrupt vectors, IDT, and how interrupt affinity and CPU affinity can be configured to balance load across multiple cores, illustrating both synchronous exceptions and asynchronous interrupts.

APICCPUHardware
0 likes · 9 min read
Interrupt Mechanism, PIC, APIC, and Interrupt Affinity Explained
macrozheng
macrozheng
Aug 8, 2020 · Fundamentals

How CPUs Handle Interrupts: From 8259A PIC to APIC and Affinity

This article explains the CPU's interrupt mechanism, describing how hardware devices trigger interrupts, the role of the 8259A programmable interrupt controller, the evolution to APIC with I/O and Local APICs, and how interrupt affinity can be configured to improve multi‑core performance.

APICCPUPIC
0 likes · 9 min read
How CPUs Handle Interrupts: From 8259A PIC to APIC and Affinity
360 Tech Engineering
360 Tech Engineering
Mar 5, 2020 · Fundamentals

Understanding CPU Interrupts and Their Initialization in the Linux Kernel

This article explains what CPU interrupts are, distinguishes synchronous and asynchronous types, describes the role of APIC controllers, and details the step‑by‑step initialization of the Interrupt Descriptor Table and related interrupt handling mechanisms in the Linux kernel.

APICCPU architectureException Handling
0 likes · 11 min read
Understanding CPU Interrupts and Their Initialization in the Linux Kernel