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Explore IOMMU overhead optimizations and observability in this 46-minute conference talk from the Linux Plumbers Conference. Dive into proposals for improving IOMMU memory management, including adding observability for page table memory in /proc/meminfo, charging IOMMU page table memory to proper owners, and enabling IOMMU page table traversal on live systems and in kdumps. Learn about strategies to limit page table growth and the importance of adding iova_stress to kernel selftests. Gain insights into debugging IOMMU translations and addressing performance issues related to IOMMU overhead memory allocation.
