load_backup_segment(9)

💖 load_backup_segment(9) — the kernel API manual, bestie edition 💖

okay so real talk, this one is a little kernel function from the load_backup_segment(9) manual (that's the manual name, keeping it right up top so you know what we're reading 🫶), and honestly? it's giving "small but mighty." let's get into it ✨

---

🌸 NAME 🌸

load_backup_segment — locate a memory hole to place the backup region. yes bestie, we're out here hunting for a hole in memory so the backup region has somewhere cute to live 💅

---

🦋 SYNOPSIS 🦋

int load_backup_segment (struct kimage *image , struct kexec_buf *kbuf
);

---

🎀 ARGUMENTS 🎀

• image — the kexec image. like, the whole picture of what's getting loaded 🔥
• kbuf — buffer contents and memory parameters. the vibes and the numbers, together 💖

---

⭐ DESCRIPTION ⭐

Returns 0 on success, negative errno on error. that's it, that's the whole description, and honestly? no notes. short, iconic, to the point 😌

ngl this is one of those "the docs are three sentences but the function is doing the most" situations 🙈

---

💜 SEE ALSO 💜

kernel file ./arch/powerpc/kexec/file_load_64.c — go read the source, iykyk 🧚

• check_realloc_usable_mem(9)
• add_usable_mem(9)
• kdump_setup_usable_lmb(9)
• add_usable_mem_property(9)
• update_usable_mem_fdt(9)
• load_elfcorehdr_segment(9)
• load_crashdump_segments_ppc64(9)
• setup_purgatory_ppc64(9)
• cpu_node_size(9)
• kexec_extra_fdt_size_ppc64(9)
• setup_new_fdt_ppc64(9)
• arch_kexec_kernel_image_probe(9)
• arch_kimage_file_post_load_cleanup(9)

like, the whole powerpc kexec friend group showed up to the party 🌈👑

---

💫 cute little sign-off 💫

this page lives in ./arch/powerpc/kexec, the version stamp on it is October 2026, and the manual name is load_backup_segment(9) — that's the source/version/date tea, delivered with love 🍓

go place that backup region, bestie. slay 💅🎀✨