pub struct Cr3;
Expand description
Contains the physical address of the highest-level page table.
Implementations§
source§impl Cr3
impl Cr3
sourcepub fn read() -> (PhysFrame, Cr3Flags)
Available on crate feature instructions
only.
pub fn read() -> (PhysFrame, Cr3Flags)
instructions
only.Read the current P4 table address from the CR3 register.
sourcepub fn read_raw() -> (PhysFrame, u16)
Available on crate feature instructions
only.
pub fn read_raw() -> (PhysFrame, u16)
instructions
only.Read the current P4 table address from the CR3 register
sourcepub fn read_pcid() -> (PhysFrame, Pcid)
Available on crate feature instructions
only.
pub fn read_pcid() -> (PhysFrame, Pcid)
instructions
only.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
sourcepub unsafe fn write(frame: PhysFrame, flags: Cr3Flags)
Available on crate feature instructions
only.
pub unsafe fn write(frame: PhysFrame, flags: Cr3Flags)
instructions
only.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.
sourcepub unsafe fn write_pcid(frame: PhysFrame, pcid: Pcid)
Available on crate feature instructions
only.
pub unsafe fn write_pcid(frame: PhysFrame, pcid: Pcid)
instructions
only.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.
sourcepub unsafe fn write_pcid_no_flush(frame: PhysFrame, pcid: Pcid)
Available on crate feature instructions
only.
pub unsafe fn write_pcid_no_flush(frame: PhysFrame, pcid: Pcid)
instructions
only.Write a new P4 table address into the CR3 register without flushing existing TLB entries for the PCID.
§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.