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