Module mm

Virtual memory (VM).

Re-exports

pub use self::frame::allocator::FrameAllocOptions;

pub use self::frame::segment::Segment;

pub use self::frame::segment::USegment;

pub use self::frame::unique::UniqueFrame;

pub use self::frame::untyped::AnyUFrameMeta;

pub use self::frame::untyped::UFrame;

pub use self::frame::untyped::UntypedMem;

pub use self::frame::Frame;

pub use self::io::Fallible;

pub use self::io::FallibleVmRead;

pub use self::io::FallibleVmWrite;

pub use self::io::Infallible;

pub use self::io::PodOnce;

pub use self::io::VmIo;

pub use self::io::VmIoOnce;

pub use self::io::VmReader;

pub use self::io::VmWriter;

pub use self::vm_space::VmSpace;

Modules

dma 🔒

frame

Frame (physical memory page) management.

heap

Manages the kernel heap using slab or buddy allocation strategies.

io

Abstractions for reading and writing virtual memory (VM) objects.

kspace 🔒

Kernel memory space management.

page_prop 🔒

Definitions of page mapping properties.

page_table 🔒

tlb

TLB flush operations.

vm_space

Virtual memory space management.

Structs

DmaCoherent

A coherent (or consistent) DMA mapping, which guarantees that the device and the CPU can access the data in parallel.

DmaStream

A streaming DMA mapping. Users must synchronize data before reading or after writing to ensure consistency.

DmaStreamSlice

A slice of streaming DMA mapping.

PageFlags

Page protection permissions and access status.

PageProperty

The property of a mapped virtual memory page.

Enums

CachePolicy

A type to control the cacheability of the main memory.

DmaDirection

DmaDirection limits the data flow direction of DmaStream and prevents users from reading and writing to DmaStream unexpectedly.

Constants

KERNEL_VADDR_RANGE

The kernel address space.

MAX_USERSPACE_VADDR

The maximum virtual address of user space (non inclusive).

PAGE_SIZE

The page size

Traits

HasDaddr

A trait for types that have mapped address in the device address space.

HasPaddr

Gets physical address trait

PagingConstsTrait 🔒

A minimal set of constants that determines the paging system. This provides an abstraction over most paging modes in common architectures.

Functions

is_page_aligned

Checks if the given address is page-aligned.

nr_base_per_page 🔒

The number of base pages in a huge page at a given level.

nr_subpage_per_huge 🔒

The number of sub pages in a huge page.

page_size 🔒

The page size at a given level.

Type Aliases

Daddr

The device address.

Paddr

Physical addresses.

PagingLevel

The level of a page table node or a frame.

Vaddr

Virtual addresses.