Module _14_page_fault 

Page-fault exception handler (vector 14, #PF).

Authors: MarioS271

Re-exports

use crate::arch::x86_64::mm::vmm::page_type::PageType; 🔒

use crate::lib::addr::VirtAddr; 🔒

use crate::lib::panic::kernel_panic; 🔒

use crate::lib::panic_codes::PanicCode; 🔒

use crate::lib::types::fmt_buffer::FmtBuffer; 🔒

use crate::mm::layout::USER_MAX; 🔒

use crate::mm::pmm::FRAME_SIZE; 🔒

use crate::mm::vmm::Vmm; 🔒

use crate::mm::vmm::VmmError; 🔒

use crate::mm::vmm::traits::VmmPaging; 🔒

use crate::mm::vmm::vma::VmaFlags; 🔒

use crate::state::kstate::KSTATE; 🔒

use core::fmt::Write; 🔒

use x86_64::registers::control::Cr2; 🔒

use x86_64::structures::idt::InterruptStackFrame; 🔒

use x86_64::structures::idt::PageFaultErrorCode; 🔒

use crate::arch::x86_64::exception_table::search_exception_table; 🔒

Functions

handle_kernel_address_pf 🔒

Handle a kernel page fault; maps a new page if VMA is found, otherwise panics

handle_user_address_pf 🔒

Handle Page Faults which happened when accessing a user address (either from userspace or from the kernel in a syscall)

handler

Handle Page Faults; dispatches to handle_kernel_address_pf and handle_user_address_pf

kernel_pf_panic 🔒

Wrapper for kernel_panic which appends the error code, CR2 address and interrupt stack frame onto the panic message

user_pf_cant_map_handler 🔒

Handle the user page fault handler being unable to map