Struct PageFormat 

pub struct PageFormat<'a, PTE>
where
    PTE: FromPrimitive + PrimInt + Unsigned,
{
    pub levels: &'a [PageLevel<PTE>],
    pub physical_mask: PTE,
}

Describes the page format of the page hierarchy and the mask of bits in the PTE that refer to the actual physical address and are not used for metadata.

Fields

levels: &'a [PageLevel<PTE>]

Describes the page table hierarchy as a slice of crate::level::PageLevel structs that each describe a single level in this hierarchy, where the level at index zero is the leaf node and the last page level is the root.

physical_mask: PTE

The physical mask of bits that refer to an actual physical address and are not used for PTE metadata.

Implementations

impl<'a, PTE> PageFormat<'a, PTE>

where PTE: FromPrimitive + PrimInt + Unsigned,

pub fn virtual_mask(&self) -> usize

Calculates the full virtual address mask by setting all the bits for each page level and finding the largest mask. This is used by the PageFormat::sign_extend method to determine the sign bit.

pub fn sign_extend(&self, address: usize) -> usize

Sign extends a given virtual address by extending the sign bit into the unused upper bits of the virtual address.

pub fn walk<PageWalker, Error>( &self, phys_addr: PTE, range: Range<usize>, walker: &mut PageWalker, ) -> Result<(), Error>

where PageWalker: PageWalker<PTE, Error>,

This is a recursive function used to traverse the page table hierarchy for a given virtual address range and the given physical address of the root page table of the page table hierarchy. It invokes the appropriate user callbacks in crate::walker::PageWalker, while traversing the page tables.

pub fn walk_mut<PageWalkerMut, Error>( &self, phys_addr: PTE, range: Range<usize>, walker: &mut PageWalkerMut, ) -> Result<(), Error>

where PageWalkerMut: PageWalkerMut<PTE, Error>,

This is a recursive function used to traverse the page table hierarchy for a given virtual address range and the given physical address of the root page table of the page table hierarchy. It invokes the appropriate user callbacks in crate::walker::PageWalker, while traversing the page tables.

Trait Implementations

impl<'a, PTE> Clone for PageFormat<'a, PTE>

where PTE: FromPrimitive + PrimInt + Unsigned + Clone,

fn clone(&self) -> PageFormat<'a, PTE>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a, PTE> Debug for PageFormat<'a, PTE>

where PTE: FromPrimitive + PrimInt + Unsigned + Debug,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.