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Clear User bits of non-leaf PTE in boot pagetable

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This commit is contained in:
Zejun Zhao 2025-06-03 15:27:07 +08:00 committed by Ruihan Li
parent 7f3a332101
commit e669d38d2d
1 changed files with 4 additions and 10 deletions
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14
ostd/src/mm/page_table/boot_pt.rs
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@ -136,11 +136,9 @@ impl<E: PageTableEntryTrait, C: PagingConstsTrait> BootPageTable<E, C> {
let root_pt = crate::arch::mm::current_page_table_paddr() / C::BASE_PAGE_SIZE; let root_pt = crate::arch::mm::current_page_table_paddr() / C::BASE_PAGE_SIZE;
// Make sure the 2 available bits are not set for firmware page tables. // Make sure the 2 available bits are not set for firmware page tables.
dfs_walk_on_leave::<E, C>(root_pt, C::NR_LEVELS, &mut |pte: &mut E| { dfs_walk_on_leave::<E, C>(root_pt, C::NR_LEVELS, &mut |pte: &mut E| {
let prop = pte.prop(); let mut prop = pte.prop();
pte.set_prop(PageProperty::new( prop.flags |= PTE_POINTS_TO_FIRMWARE_PT;
prop.flags | PTE_POINTS_TO_FIRMWARE_PT, pte.set_prop(prop);
prop.cache,
));
}); });
Self { Self {
root_pt, root_pt,
@ -271,11 +269,7 @@ impl<E: PageTableEntryTrait, C: PagingConstsTrait> BootPageTable<E, C> {
let vaddr = paddr_to_vaddr(frame_paddr) as *mut u8; let vaddr = paddr_to_vaddr(frame_paddr) as *mut u8;
unsafe { core::ptr::write_bytes(vaddr, 0, PAGE_SIZE) }; unsafe { core::ptr::write_bytes(vaddr, 0, PAGE_SIZE) };
let mut pte = E::new_pt(frame_paddr); E::new_pt(frame_paddr)
let prop = pte.prop();
pte.set_prop(PageProperty::new(prop.flags, prop.cache));
pte
} }
#[cfg(ktest)] #[cfg(ktest)]