of_iommu_get_resv_regions(9)

🎀 of_iommu_get_resv_regions(9) 🎀

okay so hi bestie!! welcome to the Kernel API Manual — this is the page for of_iommu_get_resv_regions, and it’s a reserved-region helper with serious “I know my way around a device tree” energy. ✨

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✨ NAME ✨

• of_iommu_get_resv_regions — reserved region driver helper for device tree

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🦋 SYNOPSIS 🦋

void of_iommu_get_resv_regions (struct device *dev , struct list_head *list );

That’s the exact signature, spacing and all — copy it with your whole chest. 💅

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🌸 ARGUMENTS 🌸

• dev — device for which to get reserved regions; literally the device you’re getting those regions for 🫶
• list — reserved region list; yep, the reserved region list, bestie 📋

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💖 DESCRIPTION 💖

okay so here’s the tea ☕: IOMMU drivers can use this to implement their .get_resv_regions callback for memory regions attached to a device tree node. 🫶

See the reserved-memory device tree bindings on how to use these:

Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt

That path is iconic — don’t lose it. 🎀

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/iommu/of_iommu.c

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that’s the whole page, bestie 💜 — source/version: ./drivers/iommu, date: October 2026. now go be the main character of your own reserved-region implementation. periodt. 👑