STRUCT CXL_ATTACH_REGION(9)

📦 version 7.3.1, in nixpkgs unstable

okay so bestie, this is struct cxl_attach_region(9) from the Kernel API Manual 🎀 and it’s literally here to coordinate mapping a region at memdev registration. slay.

💖 NAME 💖

struct cxl_attach_region — coordinate mapping a region at memdev registration ✨

✨ SYNOPSIS ✨

       struct cxl_attach_region {
           struct cxl_memdev_attach attach;
           struct range hpa_range;
        };

🎀 Members 🎀

  • attach — common core attachment descriptor 💅
  • hpa_range — physical address range of the region ✨

🌸 Description 🌸

okay so picture the common simple case, bestie: a CXL device with private memory — that’s the non-general purpose / "accelerator" kind 😭 — and this is the vibe. You enumerate firmware instantiated region, or you instantiate a region for the device's capacity. Then on detach? The region gets destroyed. periodt. 💅

🔥 SEE ALSO 🔥

Kernel file ./drivers/cxl/cxlmem.h: struct cxl_memdev(9), struct cxl_event_state(9), struct cxl_poison_state(9), struct cxl_fw_state(9), struct cxl_security_state(9), struct cxl_memdev_state(9), struct cxl_mem_command(9), struct cxl_hdm(9) 👑

catch you later bestie! with love from ./drivers/cxl, October 2026 edition, on the struct cxl_attach_region(9) page 💖✨

📦 where this page comes from