Enum MemoryRegionType

pub enum MemoryRegionType {
    BadMemory = 0,
    Unknown = 1,
    NonVolatileSleep = 2,
    Reserved = 3,
    Kernel = 4,
    Module = 5,
    Framebuffer = 6,
    Reclaimable = 7,
    Usable = 8,
}

The type of initial memory regions that are needed for the kernel.

Variants

BadMemory = 0

Maybe points to an unplugged DIMM module. It’s bad anyway.

Unknown = 1

Some holes not specified by the bootloader/firmware. It may be used for I/O memory but we don’t know for sure.

NonVolatileSleep = 2

In ACPI spec, this area needs to be preserved when sleeping.

Reserved = 3

Reserved by BIOS or bootloader, do not use.

Kernel = 4

The place where kernel sections are loaded.

Module = 5

The place where kernel modules (e.g. initrd) are loaded, could be reused.

Framebuffer = 6

The memory region provided as the framebuffer.

Reclaimable = 7

Once used in the boot phase. Kernel can reclaim it after initialization.

Usable = 8

Directly usable by the frame allocator.

Trait Implementations

impl Clone for MemoryRegionType

fn clone(&self) -> MemoryRegionType

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MemoryRegionType

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

Formats the value using the given formatter.

impl From<E820Type> for MemoryRegionType

fn from(value: E820Type) -> Self

Converts to this type from the input type.

impl From<MemoryAreaType> for MemoryRegionType

fn from(value: MemoryAreaType) -> Self

Converts to this type from the input type.

impl Ord for MemoryRegionType

fn cmp(&self, other: &MemoryRegionType) -> Ordering

This method returns an [Ordering] between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for MemoryRegionType

fn eq(&self, other: &MemoryRegionType) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for MemoryRegionType

fn partial_cmp(&self, other: &MemoryRegionType) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for MemoryRegionType

impl Eq for MemoryRegionType

impl StructuralPartialEq for MemoryRegionType