MemoryRegionType

ostd::boot::memory_region

Enum MemoryRegionType

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

Expand description

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.

Implementations§

impl MemoryRegionType

pub open spec fn to_int(self) -> int

{
    match self {
        MemoryRegionType::BadMemory => 0,
        MemoryRegionType::Unknown => 1,
        MemoryRegionType::NonVolatileSleep => 2,
        MemoryRegionType::Reserved => 3,
        MemoryRegionType::Kernel => 4,
        MemoryRegionType::Module => 5,
        MemoryRegionType::Framebuffer => 6,
        MemoryRegionType::Reclaimable => 7,
        MemoryRegionType::Usable => 8,
    }
}

Trait Implementations§

impl Clone for MemoryRegionType

fn clone(&self) -> MemoryRegionType

Returns a duplicate of the value. Read more

1.0.0 · Source§

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

Performs copy-assignment from source. Read more

impl Debug for MemoryRegionType

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

Formats the value using the given formatter. Read more

impl Ord for MemoryRegionType

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

This method returns an Ordering between self and other. Read more

1.21.0 · Source§

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

Compares and returns the maximum of two values. Read more

1.21.0 · Source§

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

Compares and returns the minimum of two values. Read more

1.50.0 · Source§

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

Restrict a value to a certain interval. Read more

impl PartialEq for MemoryRegionType

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

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

1.0.0 · Source§

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. Read more

1.0.0 · Source§

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

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

1.0.0 · Source§

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

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

1.0.0 · Source§

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

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

1.0.0 · Source§

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

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

impl Copy for MemoryRegionType

impl Eq for MemoryRegionType

impl StructuralPartialEq for MemoryRegionType

Auto Trait Implementations§

impl Freeze for MemoryRegionType

impl RefUnwindSafe for MemoryRegionType

impl Send for MemoryRegionType

impl Sync for MemoryRegionType

impl Unpin for MemoryRegionType

impl UnwindSafe for MemoryRegionType

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, VERUS_SPEC__A> FromSpec<T> for VERUS_SPEC__A
where VERUS_SPEC__A: From<T>,

fn obeys_from_spec() -> bool

fn from_spec(v: T) -> VERUS_SPEC__A

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T, VERUS_SPEC__A> IntoSpec<T> for VERUS_SPEC__A
where VERUS_SPEC__A: Into<T>,

fn obeys_into_spec() -> bool

fn into_spec(self) -> T

impl<T, U> IntoSpecImpl<U> for T
where U: From<T>,

fn obeys_into_spec() -> bool

fn into_spec(self) -> U

impl<VERUS_SPEC__A> OrdSpec for VERUS_SPEC__A
where VERUS_SPEC__A: Ord + ?Sized,

fn obeys_cmp_spec() -> bool

fn cmp_spec(&self, other: &VERUS_SPEC__A) -> Ordering

impl<A, Rhs> PartialEqIs<Rhs> for A
where A: PartialEq<Rhs> + ?Sized, Rhs: ?Sized,

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

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

impl<Rhs, VERUS_SPEC__A> PartialEqSpec<Rhs> for VERUS_SPEC__A
where VERUS_SPEC__A: PartialEq<Rhs> + ?Sized, Rhs: ?Sized,

fn obeys_eq_spec() -> bool

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

impl<A, Rhs> PartialOrdIs<Rhs> for A
where A: PartialOrd<Rhs> + ?Sized, Rhs: ?Sized,

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

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

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

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

impl<Rhs, VERUS_SPEC__A> PartialOrdSpec<Rhs> for VERUS_SPEC__A
where VERUS_SPEC__A: PartialOrd<Rhs> + ?Sized, Rhs: ?Sized,

fn obeys_partial_cmp_spec() -> bool

fn partial_cmp_spec(&self, other: &Rhs) -> Option<Ordering>

impl<T> ToOwned for T
where T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, VERUS_SPEC__A> TryFromSpec<T> for VERUS_SPEC__A
where VERUS_SPEC__A: TryFrom<T>,

fn obeys_try_from_spec() -> bool

fn try_from_spec( v: T, ) -> Result<VERUS_SPEC__A, <VERUS_SPEC__A as TryFrom<T>>::Error>

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

impl<T, VERUS_SPEC__A> TryIntoSpec<T> for VERUS_SPEC__A
where VERUS_SPEC__A: TryInto<T>,

fn obeys_try_into_spec() -> bool

fn try_into_spec(self) -> Result<T, <VERUS_SPEC__A as TryInto<T>>::Error>

impl<T, U> TryIntoSpecImpl<U> for T
where U: TryFrom<T>,

fn obeys_try_into_spec() -> bool

fn try_into_spec(self) -> Result<U, <U as TryFrom<T>>::Error>