BasicBlocker: ISA Redesign to Make Spectre-Immune CPUs Faster
Jan Philipp Thoma, Jakob Feldtkeller, Markus Krausz, Tim E. Güneysu, Daniel J. Bernstein · 2021
Recent research has revealed an ever-growing class of microarchitectural attacks that exploit speculative execution, a standard feature in modern processors. Proposed and deployed countermeasures involve a variety of compiler updates, firmware updates, and hardware updates. None of the deployed countermeasures have convincing security arguments, and many of them have already been broken.