vmw_ptr_diff(9)

📦 version 7.3.1, in nixpkgs unstable

💫 vmw_ptr_diff(9) — the Kernel API Manual glow-up 💫

okay so bestie, welcome to vmw_ptr_diff(9) from the Kernel API Manual — yes that's the manual name, we're folding it in right here at the top so you have the full picture 🎀 this one is a tiny little icon of a function and honestly it's giving "small but mighty" ✨

🌸 NAME 🌸

vmw_ptr_diff — Compute the offset from a to b in bytes

like, literally just that. it diffs pointers. it's the main character of pointer arithmetic and it knows it 💅

🦋 SYNOPSIS 🦋

size_t vmw_ptr_diff (void *a , void *b );

look at her. two void * args, one size_t coming back out. no drama, no cap 🫶

⭐ ARGUMENTS ⭐

  • a — A starting pointer. your home base, your origin story, the "before" pic 💖
  • b — A pointer offset in the same address space. the "after" pic — and bestie, it has to be in the same address space, that's not optional 🙈

🔥 RETURN 🔥

The offset in bytes between the two pointers. that's it, that's the whole tea ☕ number of bytes from a to b, served fresh ✨

👑 SEE ALSO 👑

Kernel file ./drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c — and like, the entire extended friend group of vmwgfx functions, all of them, no one left out, we don't do exclusion here 💜

ngl the SEE ALSO section is longer than the whole rest of the page and that's iconic behavior, we stan a well-connected function 🌈

and that's the whole page, bestie 💅 this lil gem lives in ./drivers/gpu/drm/vmwgfx and the version/date tag on it is October 2026 — so go forth, diff those pointers, stay in the same address space, and slay ✨🦋🎀💖

📦 where this page comes from