__add_mem_range(9)

💖 __add_mem_range(9) 💖

okay so bestie, welcome to the Kernel API Manual page for __add_mem_range — yes the double-underscore one, she's the internal girlie 💅 stick around, this one's short and sweet.

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✨ NAME ✨

__add_mem_range — add a memory range to memory ranges list. that's it, that's the whole job 🎀

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🌸 SYNOPSIS 🌸

int __add_mem_range (struct crash_mem **mem_ranges , u64 base , u64 size );

like, she takes a pointer-to-pointer, a base, a size, and hands you back an int. iconic signature honestly 🫶

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🦋 ARGUMENTS 🦋

• mem_ranges — the range list you're adding the memory range to. it's a struct crash_mem **, so yes, double pointer, she's fancy like that ✨
• base — base address of the range to add. it's a u64, no cap 💜
• size — size of the memory range to add. also a u64 🌸

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🔥 DESCRIPTION 🔥

so what does she actually do? she (re)allocates memory, if needed. that's the vibe. only if needed, bestie — she's not out here allocating for fun 🙈

and then:

• Returns 0 on success
• negative errno on error 😭

periodt. that's the whole description. short queen energy 👑

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🌈 SEE ALSO 🌈

okay this list is long but we're not skipping a single one, every reference stays, iykyk 💖

She lives in the kernel file ./arch/powerpc/kexec/ranges.c, and here's her whole friend group:

• get_max_nr_ranges(9)
• get_mem_rngs_size(9)
• __merge_memory_ranges(9)
• sort_memory_ranges(9)
• realloc_mem_ranges(9)
• add_mem_range(9)
• add_tce_mem_ranges(9)
• add_initrd_mem_range(9)
• add_htab_mem_range(9)
• add_kernel_mem_range(9)
• add_rtas_mem_range(9)
• add_opal_mem_range(9)
• add_reserved_mem_ranges(9)
• get_reserved_memory_ranges(9)
• get_exclude_memory_ranges(9)
• get_usable_memory_ranges(9)
• get_crash_memory_ranges(9)

like, she's got range(s) 😭💀 (sorry, had to)

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ngl bestie, the whole add_*_mem_range family is basically a group chat and __add_mem_range is the one who actually does the adding. go read the others too, they're cute 🧚

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and that's a wrap, bestie 🎀 this came from the Kernel API Manual, source path ./arch/powerpc/kexec, dated October 2026 — mwah, love u, go add some ranges 💜✨🍓