optee_ffa_from_msg_param(9)

✨ optee_ffa_from_msg_param ✨

okay so bestie, welcome to the optee_ffa_from_msg_param(9) page — yes it's a section 9 Kernel API Manual situation, and yes it's lowkey iconic 💅 this little function is the glow-up translator that turns your OPTEE_MSG params into the fancy struct tee_param form 🦋

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🌸 NAME 🌸

optee_ffa_from_msg_param — convert from OPTEE_MSG parameters to struct tee_param ✨ literally a translation queen, no cap 🫶

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🎀 SYNOPSIS 🎀

int optee_ffa_from_msg_param (struct optee *optee , struct tee_param
*params , size_t num_params , const struct optee_msg_param *msg_params
);

that's the whole vibe right there 👑 four args, one int coming back at you 💖

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💜 ARGUMENTS 💜

• optee — main service struct 🧚 the big main-character struct, handing out the context
• params — subsystem internal parameter representation 💫 the internal, on-the-inside version of your params
• num_params — number of elements in the parameter arrays 🔢 like, how many things are we actually talking about here
• msg_params — OPTEE_MSG parameters 📨 the incoming message-flavoured params, const because we're respectful and we don't touch 🙈

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🔥 DESCRIPTION 🔥

Returns 0 on success or <0 on failure 💀 that's it, that's the whole description — simple, clean, periodt. Success gets a 0 🌈, failure gets a negative, and honestly? same ✨

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🦋 SEE ALSO 🦋

• Kernel file ./drivers/tee/optee/ffa_abi.c 📁 (that's where the lore lives, iykyk)
• optee_ffa_to_msg_param(9) 🔁 the reverse-direction bestie
• optee_ffa_shm_pool_alloc_pages(9) 🧺 shared memory pool, allocating pages, slay
• optee_ffa_do_call_with_arg(9) 📞 making the call, with an argument, as one does

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and that's the page, bestie 🫶 go forth and convert your params 💖

ngl the small print still matters: this is from ./drivers/tee/optee, dated October 2026, in the Kernel API Manual — so cite it right when you're being academically iconic 🎓✨