VM_MAP_INIT(9)

💅 VM_MAP_INIT(9) 💅

okay so bestie, buckle up — this is a Kernel Developer's Manual page, section 9, for vm_map_init. it's giving "low-level kernel wiring" and honestly? iconic. 🎀

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✨ NAME ✨

vm_map_init — the lil function that initializes a vm_map structure for process zero 🫶

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🌸 SYNOPSIS 🌸

like, literally include these first, no cap:

#include <sys/param.h>
#include <vm/vm.h>
#include <vm/vm_map.h>

void
vm_map_init(vm_map_t map, vm_offset_t min, vm_offset_t max);

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🦋 DESCRIPTION 🦋

so the vm_map_init() function initializes the system map map by setting its upper and lower address bounds to max and min respectively. yes, upper goes to max, lower goes to min — the order is a little silly but that's the vibe, iykyk. 💫

it also initializes the system map mutex. very "getting everything set up before the party starts" energy. 🔥

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👑 IMPLEMENTATION NOTES 👑

okay real talk — this routine is for internal use only 💀. it gets called during early system initialization, so like, you're not gonna be casually calling it from your little userspace program, bestie. that's not the assignment. 🙈

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🧚 SEE ALSO 🧚

• vm_map(9) — go read that one too, it's the main character of this whole saga ✨

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💖 AUTHORS 💖

this manual page was written by Bruce M Simpson <bms@spc.org>. absolute legend behavior, we stan. 🫶👑

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ngl this one's short and sweet, but every single detail matters, so treat those address bounds and that mutex with respect. 💅

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🌈 and that's the whole page, bestie — brought to you by the Debian crew, dated July 19, 2003, in all its VM_MAP_INIT(9) glory. fr fr, go init some maps. 🍓⭐