Function add_to_user_table

kernel/src/memory/kernel_info.rs:57–75

(
    mapper: &mut impl Mapper<Size4KiB>,
    frame_allocator: &mut impl FrameAllocator<Size4KiB>,
)

}

pub fn add_to_user_table(
    mapper: &mut impl Mapper<Size4KiB>,
    frame_allocator: &mut impl FrameAllocator<Size4KiB>,
) -> Result<(), MapToError<Size4KiB>> {
    let page = Page::containing_address(
        VirtAddr::new(KERNELINFO_VIRTADDR));
    let frame = PhysFrame::containing_address(
        PhysAddr::new(FRAME_PHYSADDR.load(Ordering::Relaxed)));

    unsafe {
        mapper.map_to(page,
                      frame,
                      // Page not writable
                      PageTableFlags::PRESENT |
                      PageTableFlags::USER_ACCESSIBLE,
                      frame_allocator)?.flush();
    }
    Ok(())
}