Method map_to

src/memory/paging/mapper.rs:73–82

Maps the page to the frame with the provided flags. The `PRESENT` flag is added by default. Needs a `FrameAllocator` as it might need to create new page tables.

(&mut self, page: Page, frame: Frame, flags: EntryFlags, allocator: &mut A)

    /// The `PRESENT` flag is added by default. Needs a `FrameAllocator` as it might need to create
    /// new page tables.
    pub fn map_to<A>(&mut self, page: Page, frame: Frame, flags: EntryFlags, allocator: &mut A)
        where A: FrameAllocator
    {
        let mut p3 = self.p4_mut().next_table_create(page.p4_index(), allocator);
        let mut p2 = p3.next_table_create(page.p3_index(), allocator);
        let mut p1 = p2.next_table_create(page.p2_index(), allocator);

        assert!(p1[page.p1_index()].is_unused());
        p1[page.p1_index()].set(frame, flags | PRESENT);
    }

    /// Maps the page to some free frame with the provided flags.
    /// The free frame is allocated from the given `FrameAllocator`.