ENUM CXL_DEVTYPE(9)

🌸 NAME 🌸

okay so welcome to the enum cxl_devtype(9) page in the Kernel API Manual, bestie 💖 this enum’s whole gig is to delineate type-2 from a generic type-3 device — periodt. 💅

✨ SYNOPSIS ✨

enum cxl_devtype {
    CXL_DEVTYPE_DEVMEM ,
    CXL_DEVTYPE_CLASSMEM

};

That’s the whole shape of it — no cap. 🫶

🎀 Constants 🎀

• CXL_DEVTYPE_DEVMEM — Vendor specific CXL Type-2 device implementing HDM-D or HDM-DB, no requirement that this device implements a mailbox, or other memory-device-standard manageability flows. literally the whole description, keep it close. 🦋
• CXL_DEVTYPE_CLASSMEM — Common class definition of a CXL Type-3 device with HDM-H and class-mandatory memory device registers — iconic class-memory behavior, iykyk. 👑

🦋 SEE ALSO 🦋

• Kernel file ./include/cxl/cxl.h
• struct cxl_register_map(9)
• struct cxl_dpa_perf(9)
• struct cxl_dpa_partition(9)
• struct cxl_dev_state(9)

okay ily bye 💋 — source/version: ./include/cxl, dated October 2026 🎀✨