[$] 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 the
memory-management track turned once again to the challenges posed by the
upcoming Compute Express Link (CXL) technology. Two sessions looked at
different problems posed by CXL memory, which can come and go over the
operation of the system. CXL offers a lot of flexibility, but changes will
be needed for the kernel to be able to take advantage of it.