radeon_dummy_page_init(9)

📦 version 7.3.1, in nixpkgs unstable

💅 radeon_dummy_page_init(9) — from the Kernel API Manual, bestie

okay so picture this: you're deep in the kernel docs, section 9, and you land on radeon_dummy_page_init. Cute name, right? Let's get into it ✨

🌸 NAME 🌸

radeon_dummy_page_init — init dummy page used by the driver

(yes literally that's the whole job. it inits the dummy page. iconic behaviour honestly.)

🎀 SYNOPSIS 🎀

int radeon_dummy_page_init (struct radeon_device *rdev );

🦋 ARGUMENTS 🦋

  • rdev — a radeon_device pointer. that's your whole argument list, she's low maintenance 💅

💖 DESCRIPTION 💖

So what she does: she allocates the dummy page used by the driver — and this is for all asics, no exceptions, everyone gets a dummy page 🫶

And what is this dummy page for? It's the driver's lil filler for gart entries when pages are taken out of the GART. basically a stunt double so nothing points at actual nothing. no cap, that's the whole gig.

Return values, listen up:

  • returns 0 on sucess (spelled exactly like that in the docs, I'm not fixing it, I don't make the rules 😭)
  • returns -ENOMEM on failure
fr fr check that return value. -ENOMEM means she could not allocate, and you should not be proceeding like everything's fine 💀

✨ SEE ALSO ✨

The kernel file, first of all:

  • ./drivers/gpu/drm/radeon/radeon_device.c

and then the whole extended friend group — every single one of these, in order, no one left out 👑

okay that's the page!! mwah 💋 this came out of ./drivers/gpu/drm/radeon, dated October 2026 — go read the rest of them, iykyk 🌈⭐

periodt. 🧚‍♀️

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