IOTLB-SC: An Accelerator-Independent Leakage Source in Modern Cloud Systems
Thore Tiemann, Zane Weissman, Thomas Eisenbarth, Berk Sunar · 2023
Hardware peripherals such as GPUs and FPGAs are commonly available in server-grade computing to accelerate specific compute tasks, from database queries to machine learning. CSPs have integrated these accelerators into their infrastructure and let tenants combine and configure these components flexibly, based on their needs. Securing I/O interfaces is critical to ensure proper isolation between tenants in these highly complex, heterogeneous, yet shared server systems, especially in the cloud, where some peripherals may be under control of a malicious tenant.