Struct x86_64::registers::control::Cr3

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pub struct Cr3;
Expand description

Contains the physical address of the highest-level page table.

Implementations§

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impl Cr3

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pub fn read() -> (PhysFrame, Cr3Flags)

Read the current P4 table address from the CR3 register.

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pub fn read_raw() -> (PhysFrame, u16)

Read the current P4 table address from the CR3 register

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pub fn read_pcid() -> (PhysFrame, Pcid)

Read the current P4 table address from the CR3 register along with PCID. The correct functioning of this requires CR4.PCIDE = 1. See Cr4Flags::PCID

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pub unsafe fn write(frame: PhysFrame, flags: Cr3Flags)

Write a new P4 table address into the CR3 register.

Safety

Changing the level 4 page table is unsafe, because it’s possible to violate memory safety by changing the page mapping.

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pub unsafe fn write_pcid(frame: PhysFrame, pcid: Pcid)

Write a new P4 table address into the CR3 register.

Safety

Changing the level 4 page table is unsafe, because it’s possible to violate memory safety by changing the page mapping. Cr4Flags::PCID must be set before calling this method.

Trait Implementations§

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impl Debug for Cr3

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl RefUnwindSafe for Cr3

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impl Send for Cr3

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impl Sync for Cr3

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impl Unpin for Cr3

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impl UnwindSafe for Cr3

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.