Module os::mm

Memory management implementation

SV39 page-based virtual-memory architecture for RV64 systems, and everything about memory management, like frame allocator, page table, map area and memory set, is implemented here.

Every task or process has a memory_set to control its virtual memory.

Re-exports

pub use address::PhysAddr;

pub use address::PhysPageNum;

pub use address::VirtAddr;

pub use address::VirtPageNum;

pub use frame_allocator::frame_alloc;

pub use frame_allocator::FrameTracker;

pub use memory_set::remap_test;

pub use memory_set::MapPermission;

pub use memory_set::MemorySet;

pub use memory_set::KERNEL_SPACE;

pub use memory_set::KERNEL_SPACE;

pub use page_table::translated_byte_buffer;

pub use page_table::PageTableEntry;

Modules

address 🔒

Implementation of physical and virtual address and page number.

frame_allocator 🔒

Implementation of FrameAllocator which controls all the frames in the operating system.

heap_allocator 🔒

The global allocator

memory_set 🔒

Implementation of MapArea and MemorySet.

page_table 🔒

Implementation of PageTableEntry and PageTable.

Functions

init

initiate heap allocator, frame allocator and kernel space