ocxl_context_attach(9)

📦 version 7.3.1, in nixpkgs unstable

💅 ocxl_context_attach — bestie edition

okay so this page is from the Kernel API Manual, and it's all about ocxl_context_attach(9). Sit down, grab a lil snack 🍓, because we're granting an MM access to an OpenCAPI context and it's honestly kind of a whole thing.

✨ NAME ✨

ocxl_context_attach — grant access to an MM to an OpenCAPI context 🫶

🌸 SYNOPSIS 🌸

int ocxl_context_attach (struct ocxl_context *ctx , u64 amr , struct
mm_struct *mm );

that's the whole signature, no cap. three args, one int back. slay.

🎀 ARGUMENTS 🎀

  • ctx — the OpenCAPI context you're attaching to. like, the main character of this operation 💅
  • amr — the value of the AMR register, which restricts access. it's giving "boundaries, but make it hardware" 🔥
  • mm — the mm you're attaching to the context. yes, that mm_struct, the one you already know and love 💖

🦋 DESCRIPTION 🦋

so here's the tea: this function returns 0 on success, and a negative value on failure.

that's it. that's the vibe check. no extra lore, no secret side quests — success is 0, failure is negative, periodt ✨

👑 SEE ALSO 👑

okay this is the friend group, and they're all iconic. kernel file ./include/misc/ocxl.h is the home base 🏠 — go say hi:

like, the whole roster. 25 entries, all (9), all here. iykyk 🌈

💀 reminder bestie: it's 0 for success, negative for failure. don't be out here checking for positive numbers like it's some other function. that's not the vibe.

and that's the page!! 🌟 this one lives under ./include/misc, from the Kernel API Manual, dated October 2026 — mwah, tysm for reading, go attach some contexts responsibly 🧚💜

📦 where this page comes from