A move_pages() Equivalent for Physical Memory

Explore a proposed syscall for migrating physical memory contents between NUMA nodes in this Linux Plumbers Conference talk. Delve into the challenges of system-wide resource management and the limitations of current page migration syscalls. Learn about the potential integration of this new syscall with minimal changes to the mm/migrate.c codebase. Discover how profiling mechanisms like the IDLE bit, /proc/zoneinfo, and PEBS/IBS can provide system-wide granularity information. Examine a prototype tiering framework that could utilize this proposed syscall and discuss its limitations. Gain insights into improving resource allocation for CXL-aware job schedulers, memory managers, and userspace tiering solutions.