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Fortify the metadata memory model and adjust the Page casting APIs

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This commit is contained in:
Zhang Junyang
2024-05-27 09:10:09 +00:00
committed by Tate, Hongliang Tian
parent 14e1b1a9fc
commit 3579d88aa6
18 changed files with 139 additions and 1397 deletions
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5
framework/aster-frame/src/mm/page/allocator.rs
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@ -22,9 +22,8 @@ pub(crate) fn alloc(nframes: usize) -> Option<VmFrameVec> {
let mut vector = Vec::new();
for i in 0..nframes {
let paddr = (start + i) * PAGE_SIZE;
// SAFETY: The frame index is valid.
let frame = Frame {
page: Page::<FrameMeta>::from_unused(paddr).unwrap(),
page: Page::<FrameMeta>::from_unused(paddr),
};
vector.push(frame);
}
@ -36,7 +35,7 @@ pub(crate) fn alloc_single() -> Option<Frame> {
FRAME_ALLOCATOR.get().unwrap().lock().alloc(1).map(|idx| {
let paddr = idx * PAGE_SIZE;
Frame {
page: Page::<FrameMeta>::from_unused(paddr).unwrap(),
page: Page::<FrameMeta>::from_unused(paddr),
}
})
}