tee_shm_alloc_user_buf(9)

🧚 tee_shm_alloc_user_buf(9) 🧚

okay so bestie, welcome to the Kernel API Manual page for tee_shm_alloc_user_buf(9) — yes, the name is a whole mouthful, but it's literally about allocating shared memory for user space. 💅

✨ NAME ✨

tee_shm_alloc_user_buf — Allocate shared memory for user space

🌸 SYNOPSIS 🌸

struct tee_shm * tee_shm_alloc_user_buf (struct tee_context *ctx ,
       size_t size );

💖 ARGUMENTS 💖

• ctx — Context that allocates the shared memory. (slay, that's the context doing the allocating)
• size — Requested size of shared memory. (how big you want the shared-memory moment to be)

🦋 DESCRIPTION 🦋

Okay so here's the tea: memory allocated as user space shared memory is automatically freed when the TEE file pointer is closed. no cap. 🫶

The primary usage of this function is when the TEE driver doesn't support registering ordinary user space memory. That's the whole reason it exists, bestie. ✨

And yes — returns a pointer to 'struct tee_shm'. iconic return-value behavior, honestly. 👑

🌈 SEE ALSO 🌈

• Kernel file ./drivers/tee/tee_shm.c
• tee_shm_alloc_kernel_buf(9)
• tee_shm_alloc_priv_buf(9)
• tee_shm_alloc_dma_mem(9)
• tee_shm_register_user_buf(9)
• tee_shm_register_kernel_buf(9)
• tee_shm_get_fd(9)
• tee_shm_free(9)
• tee_shm_get_va(9)
• tee_shm_get_pa(9)
• tee_shm_get_from_id(9)
• tee_shm_put(9)

mwah 💋 — source/version: ./drivers/tee, date: October 2026. now go be the main character of your own shared-memory allocation, bestie. 🫶✨