VM_SET_PAGE_SIZE(9)

💖 NAME 💖

okay so bestie, welcome to VM_SET_PAGE_SIZE(9) from the Kernel Developer's Manual 💅 this one is all about vm_set_page_size — the function that literally initializes the system page size ✨

✨ SYNOPSIS ✨

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

void
vm_set_page_size(void);

🌸 DESCRIPTION 🌸

The vm_set_page_size() function initializes the system page size. Periodt. 🫶

Here's the vibe check: if vm_cnt.v_page_size — see <sys/vmmeter.h> — equals 0, then PAGE_SIZE is used. Otherwise, the value stored in vm_cnt.v_page_size is the one that gets used. 💖

and if vm_cnt.v_page_size is not a power of two? yeah no, the system will panic 😭💀 so pls be careful.

vm_set_page_size() must be called prior to any page size dependent functions. fr fr, do not skip this step 👑

🫶 AUTHORS 🫶

This manual page was written by Chad David <davidc@acns.ab.ca>. iconic behavior, honestly 💖

cute lil sign-off: this page is from Debian, dated March 21, 2014 🌈🎀