vringh_iov_push_iotlb(9)

📦 version 7.3.1, in nixpkgs unstable

💅 vringh_iov_push_iotlb(9) — like, the Kernel API Manual, bestie 🎀

okay so this is a page from the Kernel API Manual (yes the kernel kernel, we're fancy now ✨) and it's all about vringh_iov_push_iotlb. Buckle up, it's short but it's important 🫶

🌸 NAME 🌸

vringh_iov_push_iotlb — literally just copy bytes into vring_iov. that's the whole vibe, no cap 💖

✨ SYNOPSIS ✨

ssize_t vringh_iov_push_iotlb (struct vringh *vrh , struct vringh_kiov
*wiov , const void *src , size_t len );

like, she takes four things and she gives you back an ssize_t. iconic behavior tbh 👑

🦋 ARGUMENTS 🦋

  • vrh — the vring. that's it. that's the description. the main character of this whole operation 🌟
  • wiov — the wiov as passed to vringh_getdesc_iotlb. note the little aside: it gets updated as we consume, so don't be surprised when she changes on you mid-call, she's just like that 💅
  • src — the place to copy from. your source. your origin story. your from 🍓
  • len — the maximum length to copy. maximum, bestie. she will not go over. she has boundaries 🎀

💜 DESCRIPTION 💜

So what does she do? She returns the bytes copied that are <= len, or a negative errno if things go sideways 😭 that's it. that's the whole description. short and sweet and honestly kind of iconic for a kernel function ngl.

lowkey if you get a negative errno back, that's your sign that something went wrong — don't ignore it, she's telling you something 🙈

🔥 SEE ALSO 🔥

the whole squad, fr fr — plus the kernel file that makes it all happen: ./drivers/vhost/vringh.c 📁

like, go read all of them. i'll wait. 🧚✨

and that's the whole page!! 💖 this one came from ./drivers/vhost and it's dated October 2026 — so like, mark your calendars bestie, she's from the future ⭐🦋 mwah, go push some bytes 💅🎀

📦 where this page comes from