PREP_GUC_KLV_TAG(9)

💅 PREP_GUC_KLV_TAG 💅

okay so bestie, welcome to the Kernel API Manual — yes we're literally in the kernel docs rn and yes it's iconic ✨ this one's all about PREP_GUC_KLV_TAG, a little macro that pulls the KLV header together. let me walk you through it 🫶

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🌸 NAME 🌸

PREP_GUC_KLV_TAG — prepare the KLV header value based on a unique KLV definition tag. that's the whole vibe 💫

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🎀 SYNOPSIS 🎀

PREP_GUC_KLV_TAG (TAG );

like, you hand it a TAG and it does its thing. no cap 🧚

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💖 ARGUMENTS 💖

• TAG — the unique tag of the KLV definition 👑 this is the one thing you gotta give it.

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✨ DESCRIPTION ✨

so here's the tea ☕ what this does is combine the separate KEY and LEN definitions of the KLV that's identified by the TAG — like, they were living apart, and this macro is the matchmaker that gets them together 💞 one header, two halves, slay.

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🔥 RETURN 🔥

the value of the KLV header, which is a u32 ⭐ that's it, that's the whole return. short and sweet, main character energy fr fr.

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🦋 SEE ALSO 🦋

• the kernel file ./drivers/gpu/drm/xe/xe_guc_klv_helpers.h — that's where the magic lives 😭
• PREP_GUC_KLV(9)
• PREP_GUC_KLV_CONST(9)
• MAKE_GUC_KLV_KEY(9)
• MAKE_GUC_KLV_LEN(9)

go read those too, they're all in the same friend group, iykyk 🫶💜

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ngl bestie, if you're poking around in ./drivers/gpu/drm/xe you're already doing amazing, keep going 🌈

and that's a wrap on this entry from the Kernel API Manual 💅 this page lives in ./drivers/gpu/drm/xe, dated October 2026, and it's literally page PREP_GUC_KLV_TAG(9) — mwah, go build something iconic 🎀🦋💖