vmw_validati...witch_backup(9)

📦 version 7.3.1, in nixpkgs unstable

💅 vmw_validation_res_switch_backup — bestie, we're switching backups

okay so real talk, this is a page straight out of the Kernel API Manual — vmw_validati...witch_backup(9) — and yes the title got chopped like a bad text message, but we move. Let's get into it ✨

🌸 NAME 🌸

vmw_validation_res_switch_backup — the function that registers a backup MOB switch while validation is happening. that's it, that's the whole vibe 🎀

✨ SYNOPSIS ✨

void vmw_validation_res_switch_backup (struct vmw_validation_context
*ctx , void *val_private , struct vmw_bo *vbo , unsigned long
guest_memory_offset );

no return value, it's giving void, it's giving "i do my thing and i don't report back" 🫶

🦋 ARGUMENTS 🦋

  • ctx — the validation context. your main character struct, the whole scene happens in here 💖
  • val_private — the extra meta-data pointer you got back when the resource was registered with the validation context. lowkey its whole job is to identify the resource, so like, it's the name tag at the party 🎀
  • vbo — the new backup buffer object MOB. ⚠️ heads up bestie: this buffer object needs to have already been registered with the validation context. it can't just show up uninvited, no cap 🔥
  • guest_memory_offset — the offset into the new backup MOB. literally just the spot where things land 📍

👑 SEE ALSO 👑

the whole friend group, periodt. all of these still live in the Kernel file ./drivers/gpu/drm/vmwgfx/vmwgfx_validation.c and honestly they're all iconic:

ngl, don't forget the pre-registration thing for vbo. that's the one detail that'll get you if you skip it 🙈

mwah, that's the page 💜 this little masterpiece comes from ./drivers/gpu/drm/vmwgfx and it's dated October 2026 — screenshot it, memorize it, tell your friends, iykyk 🌈⭐🍓🧚

📦 where this page comes from