Struct PageTableRef

pub struct PageTableRef<'a, P: PTEArch> { /* private fields */ }

A reference to a page table.

LEN is the number of entries in a page table. LEVEL is the max level of the page table.

Implementations

impl<'a, P: PTEArch> PageTableRef<'a, P>

pub fn create_empty(access: &mut impl Access) -> PagingResult<Self>

Creates a new page table reference.

pub fn new_with_level( level: usize, access: &mut impl Access, ) -> PagingResult<Self>

New page table and returns a reference to it.

level is level of this page, should from 1 to up.

pub fn from_addr(addr: usize, level: usize) -> Self

pub fn level(&self) -> usize

pub fn paddr(&self) -> usize

pub unsafe fn map_region( &mut self, config: MapConfig, size: usize, allow_block: bool, access: &mut impl Access, ) -> PagingResult<()>

.

Errors

This function will return an error if .

Safety

User must ensure that the physical address is valid.

pub unsafe fn map_region_with_handle( &mut self, cfg: MapConfig, size: usize, allow_huge: bool, access: &mut impl Access, on_page_mapped: Option<&impl Fn(*const u8)>, ) -> PagingResult

Map a contiguous virtual memory region to a contiguous physical memory region with the given mapping flags.

The virtual and physical memory regions start with vaddr and paddr respectively. The region size is size. The addresses and size must be aligned to 4K, otherwise it will return Err(PagingError::NotAligned).

When allow_huge is true, it will try to map the region with huge pages if possible. Otherwise, it will map the region with 4K pages.

Safety

User must ensure that the physical address is valid.

pub fn as_slice(&self, access: &impl Access) -> &'a [Pte<P>]

pub fn release(&mut self, access: &mut impl Access)

pub fn entry_size(&self) -> usize

pub fn table_size(&self) -> usize

pub fn iter_all<A: Access>( &self, access: &'a A, ) -> impl Iterator<Item = PTEInfo> + 'a

Trait Implementations

impl<'a, P: Clone + PTEArch> Clone for PageTableRef<'a, P>

fn clone(&self) -> PageTableRef<'a, P>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a, P: Copy + PTEArch> Copy for PageTableRef<'a, P>