Struct PageRef 

pub struct PageRef<'a> {
    kva: Kva,
    _lt: PhantomData<&'a ()>,
}

A reference of a memory page.

PageRef represents a borrowed reference to a kernel virtual address (Kva) that maps to a memory.

Usage

This struct is useful for safely accessing mapped kernel pages without requiring ownership transfers. The lifetime parameter 'a ensures that the reference does not outlive the memory it points to.

Fields

kva: Kva

_lt: PhantomData<&'a ()>

Implementations

impl PageRef<'_>

pub unsafe fn from_pa(pa: Pa) -> Self

Build a page refernce from physical address.

Safety

Pa must be held by a other object.

pub fn into_page(&self) -> Page

Increase the page reference count corresponding to.

pub fn kva(&self) -> Kva

Get the kernel virtual address of this page.

Returns

• The kernel virtual address (Kva) of the page.

Example:

let kva = page.kva(); // Get the kernel virtual address

pub fn pa(&self) -> Pa

Get the physical address of this page.

Returns

• The physical address (Pa) of the page.

Example:

let pa = page.pa(); // Get the physical address

pub fn inner(&self) -> &[u8]

Get a reference to the underlying slice of the page (read-only).

This method allows access to the contents of the page as a byte slice. The caller can read from the page’s memory, but cannot modify it.

Returns

• A reference to the byte slice representing the contents of the page.

Example:

let slice = page.inner(); // Get read-only access to the page's content

pub fn inner_mut(&mut self) -> &mut [u8]

Get a mutable reference to the underlying slice of the page.

This method allows modification of the contents of the page as a byte slice. The caller can read from and write to the page’s memory.

Returns

• A mutable reference to the byte slice representing the contents of the page.

Example:

let slice = page.inner_mut();