Struct memory::InitialMemoryMappings

pub struct InitialMemoryMappings {
    pub page_table: PageTable,
    pub text: NoDrop<MappedPages>,
    pub rodata: NoDrop<MappedPages>,
    pub data: NoDrop<MappedPages>,
    pub stack_guard: AllocatedPages,
    pub stack: NoDrop<MappedPages>,
    pub boot_info: MappedPages,
    pub identity: NoDrop<EarlyIdentityMappedPages>,
    pub additional: NoDrop<MappedPages>,
}

Information returned after initialising the memory subsystem.

Fields

page_table: PageTable

The currently active page table.

text: NoDrop<MappedPages>

The kernel’s .text section mappings, which includes .init.

rodata: NoDrop<MappedPages>

The kernel’s .rodata section mappings.

data: NoDrop<MappedPages>

The kernel’s .data section mappings/

stack_guard: AllocatedPages

The kernel stack’s guard page.

stack: NoDrop<MappedPages>

The kernel’s stack actual data page mappings.

boot_info: MappedPages

The boot information mappings.

identity: NoDrop<EarlyIdentityMappedPages>

The list of identity mappings that should be dropped before starting the first application.

Currently there are only 4 identity mappings, used for the base kernel image:

1. the .init early text section,
2. the full .text section,
3. the .rodata section, which includes all read-only data,
4. the .data section, which includes .bss and all read-write data.

additional: NoDrop<MappedPages>

The list of additional mappings that must be kept forever.

Currently, this contains only one mapping: the early VGA buffer.

Trait Implementations

impl Debug for InitialMemoryMappings

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.