econet_cpu_init(9)

🎀 econet_cpu_init(9) 🎀

okay bestie, welcome to the Kernel API Manual page for econet_cpu_init(9) — this is the little setup function that handles where CPU interrupts go, and honestly it's giving “traffic controller but make it devicetree” 💅✨

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🌸 NAME 🌸

econet_cpu_init — configure routing of CPU interrupts to the correct domain.

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✨ SYNOPSIS ✨

int econet_cpu_init (struct device_node *node );

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🫶 ARGUMENTS 🫶

• node — The devicetree node of this interrupt controller. That's the one, bestie 🌟

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💖 DESCRIPTION 💖

okay so here's the tea ☕: interrupts that originate from the CPU are unconditionally unmasked here, and they get re-routed back to the IPI irq_domain in the CPU intc. No cap.

Masking still takes place, but the CPU intc is in charge of it — it uses the mask bits of the c0_status register. So the CPU intc is basically the main character of mask town 👑.

heads up! because IP2 ... IP7 are repurposed as Interrupt Priority Level, only the two IPI interrupts are actually supported. That's the whole vibe check 😭

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🦋 SEE ALSO 🦋

• Kernel file ./drivers/irqchip/irq-econet-en751221.c — go read it, iykyk 📖💜

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xoxo, bestie 💋 — this page came from ./drivers/irqchip, October 2026 🎀✨