xilinx_cpm_pcie_intx_map(9)

💅 xilinx_cpm_pcie_intx_map — bestie's guide to hooking up INTx

ok so this is a page from the Kernel API Manual (yes, the kernel has its own manual, she's fancy) and it's all about xilinx_cpm_pcie_intx_map, which is honestly the most niche little function ever and I'm obsessed 💖

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✨ NAME ✨

xilinx_cpm_pcie_intx_map — Set the handler for the INTx and mark IRQ as valid 🎀

Like, that's literally her whole job. She sets the handler for the INTx and marks the IRQ as valid. Queen behavior, no notes. 👑

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🌸 SYNOPSIS 🌸

int xilinx_cpm_pcie_intx_map (struct irq_domain *domain , unsigned int irq , irq_hw_number_t hwirq );

It returns an int, bestie. Keep that in your pocket, we'll come back to it. 🫶

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🦋 ARGUMENTS 🦋

Three little besties walk into the function:

• domain — the IRQ domain. That's her home base, her whole vibe check. 🌈
• irq — the Virtual IRQ number. The soft, abstract, "what the OS thinks it is" version. ✨
• hwirq — the HW interrupt number. The real, physical, hardwired one. irq_hw_number_t, no less. 💅

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💜 RETURN 💜

Always returns 0. Not "sometimes", not "on success" — always. She literally cannot fail. main character energy fr fr. 🌟

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🔥 SEE ALSO 🔥

ok here's the little friend group, all of them live in the kernel file ./drivers/pci/controller/pcie-xilinx-cpm.c:

• struct xilinx_cpm_variant(9)
• struct xilinx_cpm_pcie(9)
• xilinx_cpm_pcie_init_irq_domain(9)
• xilinx_cpm_pcie_init_port(9)
• xilinx_cpm_pcie_parse_dt(9)
• xilinx_cpm_pcie_probe(9)

go read their pages too, iykyk 🧚

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ngl this one's short but she still ate. tiny function, zero drama, always returns 0. periodt. 💀

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and that's the whole page, bestie 🍓 this came out of ./drivers/pci/controller, dated October 2026, and it's living over in the Kernel API Manual section — mwah, go forth and map those interrupts 💖✨🎀