libnvme(9)

📦 version 3.2, in arch rolling

👑 libnvme(9) — bestie's guide to enum nvme_host_metadata_cdw11

okay so this is a page straight out of the libnvme(9) API Manual, and it's a tiny one — literally one enum — but it's lowkey iconic because it's all about the Host Metadata Features (that's 7Dh/7Eh/7Fh for the opcode girlies) and specifically Command Dword 11. yes, that Command Dword 11. 💅

✨ NAME ✨

enum nvme_host_metadata_cdw11 — Host Metadata Features (7Dh/7Eh/7Fh) — Command Dword 11

like, that's the whole name. it's giving "I contain multitudes but only one dword." 🎀

🌸 SYNOPSIS 🌸

enum nvme_host_metadata_cdw11 {
    NVME_HOST_METADATA_GDHM ,
    NVME_HOST_METADATA_EA_SHIFT ,
    NVME_HOST_METADATA_EA_MASK

};

three constants. that's it. that's the enum. no cap, sometimes small is beautiful 🦋

💖 Constants 💖

  • NVME_HOST_METADATA_GDHM — Generate Default Host Metadata. and listen, this one is exclusive: it only works with the Get Features Command Dword 11. Get Features only. don't try it anywhere else, bestie, it's not that girl in other contexts 🙈
  • NVME_HOST_METADATA_EA_SHIFT — the shift amount you use to set the Element Action (EA) field. and this one? Set Features Command Dword 11 only. yes, the Set Features one. very specific. very main character. ⭐
  • NVME_HOST_METADATA_EA_MASK — the mask you use to set EA. that's it, that's the vibe check, it masks and it slays 🌈
fr fr, keep the Get Features / Set Features split straight in your head — NVME_HOST_METADATA_GDHM is Get Features Command Dword 11 only, and NVME_HOST_METADATA_EA_SHIFT is Set Features Command Dword 11 only. swapping them is not the move 💀

and that's the whole page, bestie — short, sweet, and every constant accounted for. obsessed. 🫶

mwah 💋 — this was the libnvme(9) page, enum nvme_host_metadata_cdw11, dated October 2026. go forth and set your EA field correctly ✨

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