Module kernel::memory_management::virtual_memory_mapper

This very specific to 64-bit x86 architecture, if this is to be ported to other architectures this will need to be changed

Modules

• flags

Structs

• PageDirectoryTable 🔒
• PageDirectoryTablePtr 🔒
• VirtualMemoryMapEntry
• VirtualMemoryMapper

Constants

• ADDR_MASK 🔒
• KERNEL_L3_INDEX_END 🔒
• KERNEL_L3_INDEX_START 🔒
• KERNEL_L3_PROCESS_INDEX_END 🔒
• KERNEL_L3_PROCESS_INDEX_START 🔒
• KERNEL_L4_INDEX 🔒
• KERNEL_PROCESS_VIRTUAL_ADDRESS_START
• MAX_USER_VIRTUAL_ADDRESS
• NUM_USER_L4_INDEXES 🔒

Statics

• KERNEL_VIRTUAL_MEMORY_MANAGER 🔒

Functions

• clone_current_vm_as_user
• get_current_vm
• get_l1 🔒
• get_l2 🔒
• get_l3 🔒
• get_l4 🔒
• init_kernel_vm
• is_address_mapped_in_kernel
• map_kernel
• switch_to_kernel^⚠
  Safety
• unmap_kernel
  is_allocated is used to indicate if the physical pages were allocated by the caller i.e. when we called map_kernel, the physical_address is None and we will allocate the pages, and thus when calling this function, you should pass is_allocated = true