Trait x86_64::structures::paging::Mapper

pub trait Mapper<S: PageSize> {
    fn map_to<A>(
        &mut self, 
        page: Page<S>, 
        frame: PhysFrame<S>, 
        flags: PageTableFlags, 
        allocator: &mut A
    ) -> Result<MapperFlush<S>, MapToError>
    where
        A: FrameAllocator<Size4KiB>;
    fn unmap(
        &mut self, 
        page: Page<S>
    ) -> Result<(PhysFrame<S>, MapperFlush<S>), UnmapError>;
    fn update_flags(
        &mut self, 
        page: Page<S>, 
        flags: PageTableFlags
    ) -> Result<MapperFlush<S>, FlagUpdateError>;
    fn translate_page(&self, page: Page<S>) -> Option<PhysFrame<S>>;

    fn identity_map<A>(
        &mut self, 
        frame: PhysFrame<S>, 
        flags: PageTableFlags, 
        allocator: &mut A
    ) -> Result<MapperFlush<S>, MapToError>
    where
        A: FrameAllocator<Size4KiB>,
        S: PageSize,
        Self: Mapper<S>,
    { ... }
}

A trait for common page table operations.

Required Methods

fn map_to<A>(
    &mut self,
    page: Page<S>,
    frame: PhysFrame<S>,
    flags: PageTableFlags,
    allocator: &mut A
) -> Result<MapperFlush<S>, MapToError> where
    A: FrameAllocator<Size4KiB>, 

Creates a new mapping in the page table.

This function might need additional physical frames to create new page tables. These frames are allocated from the allocator argument. At most three frames are required.

fn unmap(
    &mut self,
    page: Page<S>
) -> Result<(PhysFrame<S>, MapperFlush<S>), UnmapError>

Removes a mapping from the page table and returns the frame that used to be mapped.

Note that no page tables or pages are deallocated.

fn update_flags(
    &mut self,
    page: Page<S>,
    flags: PageTableFlags
) -> Result<MapperFlush<S>, FlagUpdateError>

Updates the flags of an existing mapping.

fn translate_page(&self, page: Page<S>) -> Option<PhysFrame<S>>

Return the frame that the specified page is mapped to.

Provided Methods

fn identity_map<A>(
    &mut self,
    frame: PhysFrame<S>,
    flags: PageTableFlags,
    allocator: &mut A
) -> Result<MapperFlush<S>, MapToError> where
    A: FrameAllocator<Size4KiB>,
    S: PageSize,
    Self: Mapper<S>, 

Maps the given frame to the virtual page with the same address.

Implementors

• impl<'a> Mapper<Size1GiB> for RecursivePageTable<'a>

• impl<'a> Mapper<Size2MiB> for RecursivePageTable<'a>

• impl<'a> Mapper<Size4KiB> for RecursivePageTable<'a>