kexec_extra_fdt_size_ppc64(9)

🌸 NAME 🌸

okay so bestie, this is kexec_extra_fdt_size_ppc64(9) from the Kernel API Manual ✨ and it does exactly one iconic thing: it returns the estimated additional size needed to setup FDT for the kexec/kdump kernel. That's the whole assignment, no cap 💅

🦋 SYNOPSIS 🦋

the signature is giving:

unsigned int kexec_extra_fdt_size_ppc64 (struct kimage *image , struct crash_mem *rmem );

🎀 ARGUMENTS 🎀

• image — the kexec image being loaded. main character energy fr fr 👑
• rmem — -- undescribed --. like, that's literally what the manpage says, bestie. rmem is out here keeping its lore mysterious 🙈

💖 DESCRIPTION 💖

Returns the estimated extra size needed for the kexec/kdump kernel FDT. that's it, that's the function — it's giving “estimate the extra size” and nothing more 🔥

🌈 SEE ALSO 🌈

Kernel file: ./arch/powerpc/kexec/file_load_64.c

• 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_backup_segment(9)
• load_elfcorehdr_segment(9)
• load_crashdump_segments_ppc64(9)
• setup_purgatory_ppc64(9)
• cpu_node_size(9)
• setup_new_fdt_ppc64(9)
• arch_kexec_kernel_image_probe(9)
• arch_kimage_file_post_load_cleanup(9)

mwah 💋 this cutie lives at ./arch/powerpc/kexec, is dated October 2026, and answers to kexec_extra_fdt_size_ppc64(9). bye bestie, go estimate that extra FDT size responsibly 🫶✨