This article explains the role of the interrupt system in ARM‑based Linux platforms, covering hardware modes, vector tables, exception handling, GIC architecture, and kernel integration, and provides detailed code examples and optimization techniques for developers working on embedded and high‑performance systems.
This article provides an in‑depth, step‑by‑step analysis of Linux GICv3 interrupt architecture, the kernel driver initialization, hardware‑to‑virtual interrupt mapping, the full interrupt handling state machine, and the workqueue subsystem including its data structures, initialization, and usage patterns.
This article explores the Linux kernel's interrupt management architecture, detailing how hardware interrupt IDs are mapped to software IRQ numbers through the irq_domain structure, GIC controller design, and various mapping strategies such as linear, radix‑tree, and no‑map approaches.
The article explains how the Linux kernel translates ARM GIC hardware interrupt numbers into virtual software IRQs by maintaining a global bitmap, initializing the interrupt controller, using irq_domain structures to map and associate hwirq and virq values, and storing relationships in descriptor and revmap trees for efficient lookup.
This tutorial explains how to transform Git into a chat tool using the open‑source GIC project, covering repository creation, installation of Node.js and GIC, configuration, launching the chat interface, viewing conversation logs via git log, and cleanly exiting the session.
