hl_hw_block_mem_fini(9)

📦 version 7.3.1, in nixpkgs unstable

💖 hl_hw_block_mem_fini — HW block memory teardown 💖

okay so this is a page straight out of the Kernel API Manual, section 9, and it's about one very specific little cleanup function. no cap, it's a short one, so grab your lil' iced matcha and let's go 🍓

✨ NAME ✨

hl_hw_block_mem_fini — HW block memory teardown.

like, the goodbye function for hardware block memory. the closing-time bop. 🎀

🌸 SYNOPSIS 🌸

void hl_hw_block_mem_fini (struct hl_ctx *ctx );

yes bestie, that's it. it returns void — nothing comes back out, it just does the thing. 🫶

🦋 ARGUMENTS 🦋

  • ctx — pointer to the habanalabs context structure. that's the one and only thing you hand it, and it's where all the state it's about to tidy up lives 💜

🧚 DESCRIPTION 🧚

so what does it actually do? two things, and they're both teardown-core:

  • it clears the HW block virtual mapped addresses list 🧹
  • and it destroys its lock 🔒💀

that's the whole vibe check. it wipes the list clean and then yeets the lock that used to guard it. it's giving "last one out, turn off the lights" energy, lowkey iconic. ✨

bestie heads up: after the lock is destroyed, that list is done. like, don't go poking at it expecting concurrency safety afterwards — the lock literally does not exist anymore. 🙈

👑 SEE ALSO 👑

the source for all this lives in the kernel file ./drivers/accel/habanalabs/common/memory.c — go read it, it's the main character 📖

and here's the whole friend group, fr fr (no skipping, every single one 💅):

and that's the whole page, bestie, you ate that 🏆✨

🌈 cute lil' sign-off: this page came from ./drivers/accel/habanalabs/common, dated October 2026, manual section 9 of the Kernel API Manual. mwah 💋💖
📦 where this page comes from