crc32_be_vgfm_16(9)

crc32_be_vgfm_16(9) 🦋

okay so this little icon is straight from the Kernel API Manual, and it's giving low-level kernel energy in the best way. bestie, we're computing CRC-32 (BE variant) with vector registers, and yes, every detail matters. 💅

✨ NAME ✨

crc32_be_vgfm_16 — Compute CRC-32 (BE variant) with vector registers. no cap, that's the whole vibe. 🎀

📜 SYNOPSIS 📜

u32 crc32_be_vgfm_16 (u32 crc , unsigned char const *buf , size_t size
);

🎀 ARGUMENTS 🎀

• crc — Initial CRC value, typically ~0. 💖
• buf — Input buffer pointer. Performance might be improved if the buffer is on a doubleword boundary. ✨
• size — Size of the buffer, must be 64 bytes or greater. this one is non-negotiable, bestie. 🫶

💅 DESCRIPTION 💅

Register usage, and yes we're listing every single one because we are thorough in this group chat:

• V0 — Initial CRC value and intermediate constants and results.
• V1..V4 — Data for CRC computation.
• V5..V8 — Next data chunks that are fetched from the input buffer.
• V9..V14 — CRC-32 constants.

🌈 SEE ALSO 🌈

• Kernel file ./lib/crc/s390/crc32be-vx.c — go look, iykyk. 🦋

Catch you later, bestie 🫶 — this masterpiece lives in the kernel source at ./lib/crc/s390, dated October 2026, and it's the crc32_be_vgfm_16(9) page. periodt. 💖