CXL PMEM(9)

💖 cxl pmem 💖

okay bestie, this is the Kernel API Manual page for cxl pmem(9), and it's lowkey iconic. The core CXL PMEM infrastructure supports persistent memory provisioning and serves as a bridge to the LIBNVDIMM subsystem. A CXL platform firmware advertises at least one persistent memory capable CXL window. That root-level bridge corresponds to a LIBNVDIMM 'bus' device. Then, for each cxl_memdev in the CXL device topology, a bridge device is added to host a LIBNVDIMM dimm object. When these bridges are registered, native LIBNVDIMM uapis are translated to CXL operations — for example, namespace label access commands. no cap, that's the whole flow 💅

🔎 SEE ALSO 🔎

• Kernel file ./drivers/cxl/core/pmem.c
• cxl_find_nvdimm_bridge(9)
• devm_cxl_add_nvdimm(9)

mwah 🫶 source/version: ./drivers/cxl/core · date: October 2026 · title: cxl pmem(9). bye bestie, go be a main character in the kernel 💖