xe_guc_klv_encode_u64(9)

💅 xe_guc_klv_encode_u64(9) — the Kernel API Manual page, but make it make sense

okay so bestie, welcome to the xe_guc_klv_encode_u64(9) page from the Kernel API Manual. yes it's a mouthful, no you don't have to say it out loud. it's literally a tiny little helper that stuffs a 64-bit number into a KLV. that's it. that's the whole vibe. ✨

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🌸 NAME 🌸

xe_guc_klv_encode_u64 — encode a 64-bit value as a KLV. cute, simple, iconic. no cap.

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🎀 SYNOPSIS 🎀

u32 * xe_guc_klv_encode_u64 (u32 *klvs , u32 avail , u16 key , u64 value );

that's the whole function signature, bestie — copy it exactly or the compiler will absolutely humble you 💀

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🦋 ARGUMENTS 🦋

• klvs — the buffer where you're gonna place the KLV. it's your buffer, you're the main character, own it 🫶
• avail — how many dwords (u32) are actually available in that buffer. lowkey the vibe check of the whole function ngl.
• key — the key to be used. it's a u16, it's giving label energy 🏷️
• value — the value to be encoded. 64 whole bits of it. the star of the show 👑

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⭐ RETURN ⭐

this function hands you back a pointer to the buffer location right past the encoded KLV. slay.

but — and listen — if there was no space to encode the KLV, you get an ERR_PTR instead. so please, for the love of everything, check that return value. it's not being dramatic, it's being safe 😭

reminder: the return is either a pointer past the encoded KLV or an ERR_PTR. those are your two options. no third secret option. 💀

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🌈 SEE ALSO 🌈

• the kernel file it lives in, verbatim: ./drivers/gpu/drm/xe/xe_guc_klv_helpers.c
• xe_guc_klv_key_to_string(9)
• xe_guc_klv_print_one(9)
• xe_guc_klv_print(9)
• xe_guc_klv_count(9)
• xe_guc_klv_encode_u32(9)
• xe_guc_klv_encode_string(9)
• xe_guc_klv_encode_object(9)
• xe_guc_klv_parser(9)

the whole KLV friend group fr fr, go read them all, they're all iconic in their own way 💖

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and that's a wrap, bestie 🧚 this page came from ./drivers/gpu/drm/xe, dated October 2026, and it's titled xe_guc_klv_encode_u64(9) — go encode something responsibly 🌸💜