IOMMU RADIX PAGE TABLE(9)

💅 IOMMU Radix Page Table(9) 💅

okay so this is the Kernel API Manual page for the IOMMU Radix Page Table, and it is lowkey iconic kernel plumbing. no cap. ✨

The IOMMU implementation of the Generic Page Table provides an ops struct that is useful to go with an iommu_domain to serve the DMA API, IOMMUFD and the generic map/unmap interface.

🚨 lock-vibe check, bestie: This interface uses a caller provided locking approach. The caller must have a VA range lock concept that prevents concurrent threads from calling ops on the same VA. Generally the range lock must be at least as large as a single map call.

👀 SEE ALSO 👀

• Kernel file ./include/linux/generic_pt/iommu.h
• struct pt_iommu(9)
• struct pt_iommu_info(9)
• struct pt_iommu_driver_ops(9)
• struct pt_iommu_cfg(9)

source/version: ./include/linux/generic_pt · date: October 2026 · manual: IOMMU Radix Page Table(9) 🫶💖✨