[$] What's brewing in CXL

ComputeExpress Link (CXL) is a technology intended to enable the provision of"memory nodes" in data centers that provide (possibly shared) memory tonearby CPUs. It has, Dan Williams said at the beginning of hismemory-management-track session on the topic at the 2026 Linux Storage,Filesystem, Memory Management, and BPF Summit, "been makingmemory-management problems worse since 2021". He used the session toprovide an overview of the ways in which CXL can be expected to extend thatrecord into the future.