__optee_disable_shm_cache(9)

📦 version 7.3.1, in nixpkgs unstable

💅 __optee_disable_shm_cache(9) — from the Kernel API Manual, bestie ✨

okay so picture this: it's a Linux kernel manpage, it's section 9, and it's about turning off the caching of some shared memory allocation in OP-TEE. yes, we're doing cleanup energy today 🧹💖

🌸 NAME 🌸

__optee_disable_shm_cache — literally disables caching of some shared memory allocation in OP-TEE. that's it, that's the whole job, and it ate 💅

🦋 SYNOPSIS 🦋

void __optee_disable_shm_cache (struct optee *optee , bool is_mapped );

look at that signature. no return value, no drama, just vibes and two arguments 🎀

✨ ARGUMENTS ✨

  • optee — the main service struct 🫶 like, the whole main character of the OP-TEE driver situation, and this is where you hand it over.
  • is_mapped — a bool, and the details matter here ngl: it's true if the cached shared memory addresses were mapped by this kernel, are safe to dereference, and should be freed. so true = yes bestie, we mapped these, they're safe to dereference, go ahead and free them. false = step away from the dereference, we do not touch 🔥

👑 SEE ALSO 👑

the kernel file lives at ./drivers/tee/optee/smc_abi.c and honestly it's giving home-base for this whole fam 🌈 here's the whole crew:

like yes, there are two nearly-identical names in there — optee_disable_shm_cache(9) and __optee_disable_shm_cache(9) — and no, that's not a typo on my part, that's just how the family tree is 💀 iykyk

🎀 reminder bestie: if is_mapped is true, you're saying those cached addresses are reasoned-about-and-safe. only say that when it's actually true, mmkay? 🙈

and that's the whole page, mwah 💖 this one came from the source tree at ./drivers/tee/optee, dated October 2026 — same energy as ever, periodt. 🌸🦋✨

📦 where this page comes from