vdpa_set_config(9)

📦 version 7.3.1, in nixpkgs unstable

💅 vdpa_set_config — bestie's guide to the kernel API

okay so this is vdpa_set_config(9) from the Kernel API Manual, and honestly? it's giving "small function, big responsibilities." it does exactly one thing and it does it iconically ✨

🌸 NAME 🌸

vdpa_set_config — set one or more device configuration fields. that's it. that's the whole vibe. you point it at fields and it fills them in 🎀

🦋 SYNOPSIS 🦋

void vdpa_set_config (struct vdpa_device *vdev , unsigned int offset ,
       const void *buf , unsigned int length );

no cap, that's the whole signature. keep it exactly like this, bestie, don't get creative with it 🙈

💖 ARGUMENTS 💖

  • vdev — the vdpa device you're operating on. your main character 🫶
  • offset — starting byte offset of the field. like, where do we even start? this says where 💅
  • buf — buffer pointer to read from. this is where the actual data lives ✨
  • length — length of the configuration fields in bytes. how much we're taking, in bytes, no more no less 🍓
lowkey important: buf is the thing being read from, not written to. length is in bytes. don't fumble it 😭

🔥 SEE ALSO 🔥

the kernel file lives at ./drivers/vdpa/vdpa.c, and here's the whole friend group — go say hi to all of them 👑

vdpa_get_config(9) is literally the sibling of this one — one reads, one writes — so if you're here you probably want that one too 🧚

and that's the page, bestie 💜

cute little sign-off: this gem lives over in ./drivers/vdpa and the version/date stamp says October 2026 ⭐ go forth and set those config fields, you absolute legend 🌈

📦 where this page comes from