msr-safe
MARTIN J MCFADDEN, Kathleen Shoga, Stephanie Brink, Barry Rountree, Tapasya Patki, C. M. Cantalupo, Diana Guttman, Brad Geltz, Ben Allen · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 2019
Modern processors offer a wide range of control and measurement features, such as performance counters, power capping, and thermal control. These features are ultimately controlled through Model Specific Registers (MSRs), which require elevated privileges for access. While this is often no problem on individual workstations, it is a significant security risk on multi-user systems and large-scale compute clusters. The msr-safe kernel module provides controlled user-level access to MSRs through a whitelisting mechanism. Is