update axerrno and page_table*, add comments, bump to 0.3.0 due to incompatible deps

[aarkegz]

No description provided.

[hky1999]

CI checks error

[Copilot]

Pull request overview

Updates axerrno/page_table_* dependencies to newer major versions and adapts the nested page table + address space code to the updated page_table_multiarch APIs, alongside a crate version bump to reflect breaking dependency changes.

Changes:

• Bump crate to 0.3.0 and update axerrno, page_table_entry, and page_table_multiarch dependency versions.
• Refactor nested page table operations to use the newer cursor-based mapping/unmapping APIs and updated return types.
• Extend the test paging handler mock to support multi-frame allocation/deallocation required by the updated paging handler trait.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/test_utils/mod.rs	Adds alloc_frames/dealloc_frames to MockHal’s PagingHandler impl for new trait requirements.
src/npt/mod.rs	Updates NPT type aliases and refactors map/unmap/protect APIs to the new cursor-based interfaces and types.
src/npt/arch/x86_64.rs	Adjusts flush_tlb to avoid test-only unused variable warnings.
src/lib.rs	Imports AxError for mapping-error conversion after dependency updates.
src/address_space/mod.rs	Updates axerrno imports to align with new dependency versions and API usage.
src/address_space/backend/mod.rs	Adapts protect operation to new protect_region signature.
src/address_space/backend/linear.rs	Adapts linear backend unmap to new unmap_region signature.
src/address_space/backend/alloc.rs	Adapts alloc backend unmap to new unmap return tuple shape.
Cargo.toml	Bumps crate + dependency versions to the new major releases.

Comments suppressed due to low confidence (2)

src/npt/arch/x86_64.rs:195

• #[allow(unused_variables)] on flush_tlb applies to all builds, which can mask legitimate unused-variable warnings if this function changes later. Prefer scoping it to tests with #[cfg_attr(test, allow(unused_variables))] (or otherwise tightening the allowance) since the unused variable only occurs under #[cfg(test)].

    // Under the x86 architecture, the flush_tlb operation will invoke the ring0 instruction,
    // causing the test to trigger a SIGSEGV exception.
    #[allow(unused_variables)]
    fn flush_tlb(vaddr: Option<GuestPhysAddr>) {
        #[cfg(not(test))]

src/npt/mod.rs:106

• The doc comment on unmap no longer reflects the method’s return type (it now returns the unmapped physical address, mapping flags, and page size). Updating the comment to describe what is returned will prevent confusion for callers and keep rustdoc accurate.

    /// Unmaps a virtual address.
    pub fn unmap(
        &mut self,
        vaddr: GuestPhysAddr,
    ) -> memory_set::MappingResult<(PhysAddr, MappingFlags, PageSize)> {
        match self {

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[hky1999]

LGTM