Struct PTEntry

#[repr(transparent)]
pub struct PTEntry(pub u64);

A PT Entry consists of an address and a bunch of flags.

Tuple Fields

0: u64

Implementations

impl PTEntry

pub fn new(page: PAddr, flags: PTFlags) -> PTEntry

Creates a new PTEntry.

Arguments

• page - The physical address of the backing 4 KiB page.
• flags- Additional flags for the entry.

pub fn address(self) -> PAddr

Retrieves the physical address in this entry.

pub fn flags(self) -> PTFlags

Returns the flags corresponding to this entry.

pub fn is_present(self) -> bool

Present; must be 1 to map a 4-KByte page or reference a page table.

pub fn is_writeable(self) -> bool

Read/write; if 0, writes may not be allowed to the 4-KByte region controlled by this entry

pub fn is_user_mode_allowed(self) -> bool

User/supervisor; user-mode accesses are not allowed to the 4-KByte region controlled by this entry.

pub fn is_page_write_through(self) -> bool

Page-level write-through.

pub fn is_page_level_cache_disabled(self) -> bool

Page-level cache disable.

pub fn is_accessed(self) -> bool

Accessed; if PS set indicates whether software has accessed the 4-KByte page else indicates whether this entry has been used for linear-address translation.

pub fn is_dirty(self) -> bool

Dirty; if PD_PS set indicates whether software has written to the 4-KByte page referenced by this entry else ignored.

pub fn is_global(self) -> bool

Global; if PS && CR4.PGE = 1, determines whether the translation is global; ignored otherwise if not PS this is ignored.

pub fn is_instruction_fetching_disabled(self) -> bool

If IA32_EFER.NXE = 1, execute-disable. If 1, instruction fetches are not allowed from the 4-KByte region.

Trait Implementations

impl Clone for PTEntry

fn clone(&self) -> PTEntry

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PTEntry

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

Formats the value using the given formatter.

impl Copy for PTEntry