Immediately following the CXL 2.0 specification being made public in November, Intel developers began posting Linux enablement patches for CXL 2.0 with an initial focus on type-3 memory device support. It’s looking like that CXL 2.0 enablement work is now closer to being mainlined in the Linux kernel…
Source: Phoronix – CXL 2.0 Support For Linux Moves Past “RFC” Phase