Seal the kernel page table

ostd/src/arch/x86/trap/syscall.rs

@@ -33,7 +33,7 @@ global_asm!(
     include_str!("syscall.S"),
     USER_CS = const super::gdt::USER_CS.0,
     USER_SS = const super::gdt::USER_SS.0,
-    ADDRESS_WIDTH = const crate::mm::kspace::KernelPtConfig::ADDRESS_WIDTH,
+    ADDRESS_WIDTH = const crate::arch::mm::PagingConsts::ADDRESS_WIDTH,
 );
 
 /// # Safety

ostd/src/mm/kspace/kvirt_area.rs

@@ -73,7 +73,7 @@ impl KVirtArea {
     }
 
     #[cfg(ktest)]
-    pub fn query(&self, addr: Vaddr) -> Option<super::MappedItem> {
+    pub(in crate::mm) fn query(&self, addr: Vaddr) -> Option<super::MappedItem> {
         use align_ext::AlignExt;
 
         assert!(self.start() <= addr && self.end() >= addr);

ostd/src/mm/kspace/mod.rs

@@ -135,10 +135,10 @@ pub fn paddr_to_vaddr(pa: Paddr) -> usize {
 ///
 /// It manages the kernel mapping of all address spaces by sharing the kernel part. And it
 /// is unlikely to be activated.
-pub static KERNEL_PAGE_TABLE: Once<PageTable<KernelPtConfig>> = Once::new();
+pub(super) static KERNEL_PAGE_TABLE: Once<PageTable<KernelPtConfig>> = Once::new();
 
 #[derive(Clone, Debug)]
-pub(crate) struct KernelPtConfig {}
+pub(super) struct KernelPtConfig {}
 
 // We use the first available PTE bit to mark the frame as tracked.
 // SAFETY: `item_into_raw` and `item_from_raw` are implemented correctly,
@@ -181,7 +181,7 @@ unsafe impl PageTableConfig for KernelPtConfig {
 }
 
 #[derive(Clone, Debug, PartialEq, Eq)]
-pub(crate) enum MappedItem {
+pub(super) enum MappedItem {
     Tracked(Frame<dyn AnyFrameMeta>, PageProperty),
     Untracked(Paddr, PagingLevel, PageProperty),
 }