xe_reg_sr_readback_check(9)

💅 xe_reg_sr_readback_check(9) 💅

okay bestie, welcome to the Kernel API Manual ✨ — yes, the actual kernel docs, but make it cute. today we're looking at one little function that goes and double-checks your register programming like the responsible main character it is 🎀

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🌸 NAME 🌸

xe_reg_sr_readback_check — reads back the registers that are referenced in save/restore entries and checks whether the programming is actually in place 🫶

like, no cap, it's the vibe check for your registers. you wrote something, but did it stick? this function fr fr goes and looks 💅

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✨ SYNOPSIS ✨

void xe_reg_sr_readback_check (struct xe_reg_sr *sr , struct xe_gt *gt ,
struct drm_printer *p );

that's it. that's the whole signature. void return, three args, iconic 👑

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🦋 ARGUMENTS 🦋

• sr — the save/restore entries 💖 this is the list of registers we're gonna go read back and check, bestie.
• gt — the GT to read the register from 🌟 that's where the actual reading happens. you gotta know where to look, iykyk.
• p — the DRM printer to report discrepancies on 🎀 if something doesn't match up, this is where the tea gets spilled.

not me reading back registers just to make sure the programming is in place 😭 it's giving thorough. it's giving careful. it's giving slay.

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🔥 SEE ALSO 🔥

• the kernel file ./drivers/gpu/drm/xe/xe_reg_sr.c — the home of all this, go read it 💜
• xe_reg_sr_dump(9) — the dumping sibling 🌈
• xe_reg_sr_lrc_check(9) — the LRC-checking sibling ⭐

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and that's the whole page, bestie 🧚 no filler, no fluff, every detail kept and every vibe immaculate.

source: ./drivers/gpu/drm/xe · date: October 2026 — mwah, signed off with a little sparkle 💅✨🍓