STRUCT TEE_PROTMEM_POOL_OPS(9)

💅 struct tee_protmem_pool_ops(9) 💅

okay so bestie, welcome to the Kernel API Manual ✨ — this is the page for struct tee_protmem_pool_ops, and it is literally the blueprint for how your protected memory pool does its whole job. no cap, it's giving "job description for a memory pool" and we're obsessed 🫶

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🌸 NAME 🌸

struct tee_protmem_pool_ops — protected memory pool operations 💖

like. the operations. for the protected memory pool. that's the vibe check and it passed 👑

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✨ SYNOPSIS ✨

struct tee_protmem_pool_ops {
    int (*alloc)(struct tee_protmem_pool *pool, struct sg_table *sgt,
size_t size, size_t *offs);
    void (*free)(struct tee_protmem_pool *pool, struct sg_table *sgt);
    int (*update_shm)(struct tee_protmem_pool *pool, struct sg_table
*sgt, size_t offs, struct tee_shm *shm, struct tee_shm **parent_shm);
    void (*destroy_pool)(struct tee_protmem_pool *pool);
 };

four function pointers, one iconic little struct, and a whole lot of responsibility 😭 copy it exactly bestie, the compiler is not forgiving and neither is the kernel 🔥

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🎀 Members 🎀

okay so this is the part where each function pointer gets its moment in the spotlight. main character energy for all four, fr fr 🌟

• alloc — called when allocating protected memory. this is the "gimme the goods" callback 💖 it takes the pool, an sgt, a size, and an offs pointer, and it returns an int like a good little function.
• free — called when freeing protected memory. the cleanup era 🧹 takes the pool and the sgt, returns void, no drama, no return value, just vibes 🌈
• update_shm — called when registering a dma-buf to update the shm with physical address of the buffer, or to return the parent_shm of the memory pool 👑 this one's got two jobs and honestly? it's handling both. takes pool, sgt, offs, shm, and the parent_shm double-pointer, returns int.
• destroy_pool — called when destroying the pool 💀 the final boss. takes the pool, returns void. pour one out 🍓

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🦋 SEE ALSO 🦋

everything below lives in the kernel file ./include/linux/tee_core.h — go read it, iykyk 📖✨ and then go read literally all of these:

• struct tee_device(9)
• struct tee_driver_ops(9)
• struct tee_desc(9)
• struct tee_protmem_pool(9)
• tee_device_alloc(9)
• tee_device_register(9)
• tee_device_unregister(9)
• tee_device_get(9)
• tee_device_put(9)
• tee_device_set_dev_groups(9)
• tee_session_calc_client_uuid(9)
• struct tee_shm_pool(9)
• struct tee_shm_pool_ops(9)
• tee_shm_pool_free(9)
• tee_protmem_static_pool_alloc(9)
• tee_get_drvdata(9)
• tee_shm_alloc_priv_buf(9)
• tee_shm_is_dynamic(9)
• tee_shm_put(9)
• tee_shm_get_id(9)
• tee_shm_get_from_id(9)
• teedev_open(9)
• teedev_close_context(9)
• teedev_ctx_get(9)
• teedev_ctx_put(9)

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bestie pls don't skip the SEE ALSO list, it's literally 25 whole pages of lore and you will need them 💀🙈

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and that's the page!! 🎀 it lives down in ./include/linux, dated October 2026, and it's filed under struct tee_protmem_pool_ops(9) in the Kernel API Manual 💜 slay, you read the whole thing, i'm so proud of you 🫶✨