Struct PageTableEntry 

pub struct PageTableEntry(u64);

Tuple Fields

0: u64

Trait Implementations

impl Clone for PageTableEntry

fn clone(&self) -> PageTableEntry

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PageTableEntry

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

Formats the value using the given formatter.

impl Ord for PageTableEntry

fn cmp(&self, other: &PageTableEntry) -> Ordering

This method returns an [Ordering] between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PageTableEntry for PageTableEntry

type Bits = u64

用于表示页表项的底层位模式类型

fn from_bits(bits: Self::Bits) -> Self

从位模式创建页表项

fn to_bits(&self) -> Self::Bits

获取页表项的位模式

fn empty() -> Self

创建一个空的（无效的）页表项

fn new_leaf(ppn: Ppn, flags: UniversalPTEFlag) -> Self

创建一个新的叶节点（普通页映射）

fn new_table(ppn: Ppn) -> Self

创建一个新的表节点（指向下一级页表）

fn is_valid(&self) -> bool

检查页表项是否有效

fn is_huge(&self) -> bool

检查页表项是否为巨页映射（如果支持）

fn is_empty(&self) -> bool

检查页表项是否为空

fn ppn(&self) -> Ppn

获取页表项中存储的物理页号（Ppn）

fn flags(&self) -> UniversalPTEFlag

获取页表项的通用标志

fn set_ppn(&mut self, ppn: Ppn)

设置页表项的物理页号

fn set_flags(&mut self, flags: UniversalPTEFlag)

设置页表项的标志

fn clear(&mut self)

清空页表项（使其无效）

fn remove_flags(&mut self, flags: UniversalPTEFlag)

移除指定的标志

fn add_flags(&mut self, flags: UniversalPTEFlag)

添加指定的标志

impl PageTableInner<PageTableEntry> for PageTableInner

const LEVELS: usize = 3usize

const MAX_VA_BITS: usize = 39usize

const MAX_PA_BITS: usize = 56usize

fn tlb_flush(vpn: Vpn)

fn tlb_flush_all()

fn is_user_table(&self) -> bool

fn activate(ppn: Ppn)

fn activating_table_ppn() -> Ppn

fn new() -> Self

fn from_ppn(ppn: Ppn) -> Self

fn new_as_kernel_table() -> Self

fn root_ppn(&self) -> Ppn

fn get_entry( &self, vpn: Vpn, level: usize, ) -> Option<(PageTableEntry, PageSize)>

fn translate(&self, vaddr: Vaddr) -> Option<Paddr>

fn map( &mut self, vpn: Vpn, ppn: Ppn, _page_size: PageSize, flags: UniversalPTEFlag, ) -> Result<(), PagingError>

fn unmap(&mut self, vpn: Vpn) -> Result<(), PagingError>

fn mvmap( &mut self, vpn: Vpn, target_ppn: Ppn, page_size: PageSize, flags: UniversalPTEFlag, ) -> Result<(), PagingError>

fn update_flags( &mut self, vpn: Vpn, flags: UniversalPTEFlag, ) -> Result<(), PagingError>

fn walk( &self, vpn: Vpn, ) -> Result<(Ppn, PageSize, UniversalPTEFlag), PagingError>

impl PartialEq for PageTableEntry

fn eq(&self, other: &PageTableEntry) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for PageTableEntry

fn partial_cmp(&self, other: &PageTableEntry) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for PageTableEntry

impl Eq for PageTableEntry

impl StructuralPartialEq for PageTableEntry