STRUCT OPTEE_FFA(9)

💅 struct optee_ffa(9) — the FFA communication struct, bestie

okay so this is a page straight out of the Kernel API Manual, and it's genuinely SO cute and small — it's giving "little struct that runs the whole group chat" energy. Let's get into it 🫶

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✨ NAME ✨

struct optee_ffa — the FFA communication struct. that's it, that's the whole vibe. it's the struct that handles the talking. 💬

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🌸 SYNOPSIS 🌸

struct optee_ffa {
    struct ffa_device *ffa_dev;
    u32 bottom_half_value;
    struct mutex mutex;
    struct rhashtable global_ids;
    struct workqueue_struct *notif_wq;
    struct work_struct notif_work;
 };

look at her. six members. not one of them doing too much. main character energy honestly 👑

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🎀 Members 🎀

• ffa_dev — the FFA device ✨ this one holds the destination id, which is literally the id of OP-TEE in secure world. it knows where it's going. no lost messages, no "oops wrong chat" 🙈
• bottom_half_value — the notification ID used for bottom half signalling, or U32_MAX if unused. lowkey important: U32_MAX literally means "nobody's home, this one's not in use" 💀
• mutex — serializes access to global_ids. one at a time please, we are NOT doing chaos in this house 🔒
• global_ids — the FF-A shared memory global handle translation. it's the little translator bestie, mapping handles so everything makes sense 🦋
• notif_wq — the workqueue for FF-A asynchronous notification. it's the queue, she queues 🧚
• notif_work — the work for FF-A asynchronous notification. it's the actual work being done, the doer, the one who shows up 🌈

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👑 SEE ALSO 👑

go read the source, bestie, it's right there: ./drivers/tee/optee/optee_private.h

and the whole friend group, all of them iconic, all of them linked:

• struct optee_call_waiter(9)
• struct optee_call_queue(9)
• struct optee_supp(9)
• struct optee_pcpu(9)
• struct optee_smc(9)
• struct optee_revision(9)
• struct optee_ops(9)
• struct optee(9)

like genuinely go read all of them, iykyk 💜

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ok that's the whole page, no cap, every single member accounted for. nothing skipped, nothing invented. slay 🎀

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and that's a wrap, bestie!! this page lives in ./drivers/tee/optee, it's from October 2026, and it's the <rainbow>struct optee_ffa(9)</rainbow> page forever and always 💖 see you in the next man page ~ periodt ✨