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Use pointer metadata for page metadata

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This commit is contained in:
Zhang Junyang
2024-10-03 15:41:56 +08:00
committed by Tate, Hongliang Tian
parent cd22854f59
commit 60365a818a
17 changed files with 223 additions and 290 deletions
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8
ostd/src/mm/page_table/mod.rs
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@ -3,8 +3,8 @@
use core::{fmt::Debug, marker::PhantomData, ops::Range};
use super::{
nr_subpage_per_huge, page::meta::MapTrackingStatus, page_prop::PageProperty, page_size, Paddr,
PagingConstsTrait, PagingLevel, Vaddr,
nr_subpage_per_huge, page_prop::PageProperty, page_size, Paddr, PagingConstsTrait, PagingLevel,
Vaddr,
};
use crate::{
arch::mm::{PageTableEntry, PagingConsts},
@ -338,7 +338,9 @@ pub(super) unsafe fn page_walk<E: PageTableEntryTrait, C: PagingConstsTrait>(
/// The interface for defining architecture-specific page table entries.
///
/// Note that a default PTE should be a PTE that points to nothing.
pub trait PageTableEntryTrait: Clone + Copy + Debug + Default + Pod + Sized + Sync {
pub trait PageTableEntryTrait:
Clone + Copy + Debug + Default + Pod + Sized + Send + Sync + 'static
{
/// Create a set of new invalid page table flags that indicates an absent page.
///
/// Note that currently the implementation requires an all zero PTE to be an absent PTE.