arch_hiberna..._header_save(9)

💾 arch_hibernation_header_save(9) — bestie's guide to the x86 hibernation header glow-up ✨

okay so this is a page from the Kernel API Manual, and honestly? it's short, it's sweet, and it's lowkey doing main character energy in the hibernation code. we're saving the architecture-specific part of a hibernation image header. that's it. that's the vibe. 🫶

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🌸 NAME 🌸

arch_hibernation_header_save — populates the architecture specific part of a hibernation image header.

like, it fills in the arch-specific section. no cap, that's literally it.

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🎀 SYNOPSIS 🎀

int arch_hibernation_header_save (void *addr , unsigned int max_size );

that's the whole signature, bestie — int in, int out, two args. periodt. 💅

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🦋 ARGUMENTS 🦋

• addr — the address where the architecture specific header data will be saved. think of it as the little spot in memory where we're dropping our arch-specific info 🍓
• max_size — the maximum size of architecture specific data in the hibernation header. it's the budget, and we must respect the budget 🙈

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⭐ RETURN ⭐

• 0 on success. slay. 💖
• -EOVERFLOW if max_size is insufficient — i.e. your budget was too small, and the kernel is politely telling you so 😭

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🔥 SEE ALSO 🔥

• Kernel file ./arch/x86/power/hibernate.c
• pfn_is_nosave(9)
• compute_e820_crc32(9)
• arch_hibernation_header_restore(9)

go read those if you wanna complete the lore, iykyk 👑

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and that's the whole page, bestie — shoutout to ./arch/x86/power for shipping this, and to October 2026 for the timestamp 🌈 mwah 💋