UVM_FAULT(9)

🦋 UVM_FAULT 🦋

ok so real talk bestie, this is uvm_fault(9) from the Kernel Developer's Manual — page fault handling, and yes it's exactly as iconic as it sounds 💅

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✨ NAME ✨

uvm_fault — page fault handling 🫶

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🌸 SYNOPSIS 🌸

#include <sys/param.h>
#include <uvm/uvm.h>

int
uvm_fault(vm_map_t orig_map, vaddr_t vaddr, vm_fault_t fault_type,
    vm_prot_t access_type);

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💖 DESCRIPTION 💖

okay so uvm_fault() is the main entry point for faults — like, the literal main character of page faulting, no cap 👑

It takes these besties as arguments:

• orig_map — the map the fault originated in 💫
• vaddr — a vaddr offset into the map where the fault occurred 📍
• fault_type — describes the type of fault that happened 🌈
• access_type — describes the type of access that was requested 🔥

And when it's done doing its thing? uvm_fault() returns a standard errno. periodt 💅

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🎀 SEE ALSO 🎀

• pmap(9) ⭐

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and that's the whole vibe bestie, go forth and handle those faults 💜

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this lil gem is from the Debian edition, dated December 5, 2019, and it lives at UVM_FAULT(9) — mwah, love that for us 🍓✨