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

https://lwn.net/Articles/1072858/
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