MAX_INBOUND_BUFFER_SIZE(9)

πŸ“¦ version 7.3.1, in nixpkgs unstable

πŸ’… MAX_INBOUND_BUFFER_SIZE(9) πŸ’…

okay bestie, welcome to the Kernel API Manual β€” this one's a macro page, section 9, kernel-ville, and it's honestly short and sweet. let's get into it ✨


🌸 NAME 🌸

MAX_INBOUND_BUFFER_SIZE β€” literally just the maximum size of the inbound buffer. that's it. that's the whole name. iconic minimalism πŸŽ€


πŸ¦‹ SYNOPSIS πŸ¦‹

MAX_INBOUND_BUFFER_SIZE

no args, no parentheses, no drama β€” it's a macro, she just is πŸ’…


✨ DESCRIPTION ✨

okay so here's the tea πŸ“ β€” the size of that inbound buffer is not a fixed vibe. it depends on what the user's requests actually ask for, specifically the number of IB and OB arguments. like, the buffer size is giving "it depends on your order" energy, yk?

so if some invocation needs a size that's larger than MAX_INBOUND_BUFFER_SIZE... yeah, no cap, that's your sign 🫢. the user should lowkey consider using another form of shared memory with QTEE. that's the whole move. periodt.

πŸ’€ fr fr, this is the ceiling β€” if you're bumping up against it, switch strategies, don't try to make it fit.

πŸ‘‘ SEE ALSO πŸ‘‘

  • the kernel file ./drivers/tee/qcomtee/shm.c β€” go read her, she's the main character of this whole situation πŸ”₯
  • MAX_OUTBOUND_BUFFER_SIZE(9) β€” the outbound sibling, equally slay 🌈
  • qcomtee_msg_buffers_alloc(9) β€” the allocator bestie you'll wanna meet πŸ’œ

🧚 a lil sign-off 🧚

this page lives under ./drivers/tee/qcomtee, and it's dated October 2026 β€” so yeah, future vibes, we're ahead of the curve πŸ’–

k bye, go read shm.c and stay hydrated πŸŽ€βœ¨πŸ¦‹

πŸ“¦ where this page comes from