NVME_GET_FEATURES_HOST_MEM_BUF(2)

💖 nvme_get_features_host_mem_buf(2) 💖

okay bestie, welcome to the libnvme API manual ✨ this one's a lil function called nvme_get_features_host_mem_buf, and it's here to grab the host memory buffer feature for you. she's short, she's deprecated, she's still iconic 🎀

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✨ NAME ✨

nvme_get_features_host_mem_buf — Get host memory buffer feature 🦋

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✨ SYNOPSIS ✨

int nvme_get_features_host_mem_buf (int fd , enum nvme_get_features_sel
sel , __u32 *result );

like. that's the whole signature. three lil things go in, an int comes out 💅

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✨ ARGUMENTS ✨

• fd — the File descriptor of nvme device. that's your lil handle to the device, she's your main character 🔑
• sel — Select which type of attribute to return, see enum nvme_get_features_sel. so basically which flavor of attribute you want back, and the enum holds all the menu options 🌈
• result — The command completion result from CQE dword0. yep, the answer lands in here, straight out of CQE dword0, no cap ⭐

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✨ DESCRIPTION ✨

okay so. deep breath 🫶

Deprecated: doesn't fetch the Host Memory Buffer Attributes data structure. Use nvme_get_features_host_mem_buf2 instead.

that's the tea ☕ she's deprecated!! she does not fetch the Host Memory Buffer Attributes data structure, which is kind of the whole point of the family, so like… yeah. not her fault, evolution is real 😭

the glow-up version is nvme_get_features_host_mem_buf2 — go use that one instead, she ate 💖

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✨ RETURN ✨

so what do you get back, bestie?

• The nvme command status if a response was received (see enum nvme_status_field), or
• -1 with errno set otherwise 🫠

like if it worked you get a status, if it didn't you get -1 and errno tells you the whole story. that's the vibe check 💀

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and that's the page!! no notes, no extra options hiding anywhere, just a smol deprecated function doing her best 🧚

signing off — this was the libnvme API manual, July 2026 edition, mwah 💜 see you in the next one bestie, slay 🌸💅✨