Coursera Flash Sale
40% Off Coursera Plus for 3 Months!
Grab it
Explore AMD's Smart Data Cache Injection (SDCI) technology and its implementation in Linux through this 16-minute conference talk from the Linux Plumbers Conference. Learn how SDCI leverages PCIe TLP Processing Hints (TPH) to direct DMA write data straight into the target CPU's L2 cache, resulting in reduced latency, improved throughput, and decreased DRAM bandwidth usage. Discover the technical details of AMD's SDCI design and examine the Linux kernel support developed for this technology, including a new ACPI _DSM interface in the PCI root complex and extensions that provide TPH API functionality. Understand how driver developers can integrate these features to achieve significant performance improvements through practical demonstrations using two open-source network drivers that show measurable enhancements in latency and bandwidth efficiency on AMD SDCI-enabled SoCs. Gain insights into lessons learned, practical considerations for driver adoption, and design implications when implementing this technology in virtualized environments.
