Raspberry Pi 5 Iommu Driver Being Worked on for the Mainline Linux Kernel

11 hours ago

Raspberry Pi 5's IOMMU driver is being adapted for the mainline Linux kernel, improving support over two years after release.
Open-source developer Daniel Drake is leading the effort, adapting the downstream driver with enhancements like generic page table management.
The driver integrates with the display controller for efficient graphics memory management, using 4KB pages, though 12KB is wasted with the default 16KB kernel PAGE_SIZE.
Code review is underway, with the goal of upstream inclusion to benefit Raspberry Pi 5 users running the mainline kernel.

Hasty Briefsbeta