[$] CXL 2: Pooling, sharing, and I/O-memory resources

During the final day of the 2022 Linux Storage,Filesystem, Memory-management and BPF Summit (LSFMM), attention in thememory-management track turned once again to the challenges posed by theupcoming Compute Express Link (CXL) technology. Two sessions looked atdifferent problems posed by CXL memory, which can come and go over theoperation of the system. CXL offers a lot of flexibility, but changes willbe needed for the kernel to be able to take advantage of it.