Struct kernel::mem::page_table::PageTable

#[repr(C)]
pub struct PageTable {
    root_frame_number: FrameNumber,
    frame_list: Vec<FrameTracker>,
}

Fields

root_frame_number: FrameNumber

frame_list: Vec<FrameTracker>

Implementations

impl PageTable

pub fn new() -> Self

pub fn satp(&self) -> usize

Returns the value of the satp register that points to the page table.

pub fn from_satp(satp: usize) -> Self

Creates a PageTable where the root_frame_number points to the frame in the satp register.

pub fn map( &mut self, page_number: PageNumber, frame_number: FrameNumber, flags: PTEFlags )

Maps a PageNumber to a FrameNumber and sets the PageTableEntry with PTEFlags.

pub fn unmap(&mut self, page_number: PageNumber)

Clears the PageTableEntry corresponding to the PageNumber.

pub fn translate( &self, virtual_address: VirtualAddress ) -> Option<PhysicalAddress>

Finds the page table with a VirtualAddress and returns a PhysicalAddress.

pub fn translate_page(&self, page_number: PageNumber) -> Option<PageTableEntry>

Finds the page table with a PageNumber and returns a PageTableEntry.

fn find_pte(&self, page_number: PageNumber) -> Option<&mut PageTableEntry>

Finds the page table with a PageNumber and returns a mutable reference to a PageTableEntry.

fn create_pte(&mut self, page_number: PageNumber) -> Option<&mut PageTableEntry>

Finds the page table with a PageNumber and returns a mutable reference to a PageTableEntry. Creates a new PageTableEntry if not existed.