Function allocate_pages

kernel/src/memory.rs:273–289

(level_4_table: *mut PageTable,
                      start_addr: VirtAddr,
                      size: u64,
                      flags: PageTableFlags)

}

pub fn allocate_pages(level_4_table: *mut PageTable,
                      start_addr: VirtAddr,
                      size: u64,
                      flags: PageTableFlags)
                      -> Result<(), MapToError<Size4KiB>> {

    let memory_info = unsafe {MEMORY_INFO.as_mut().unwrap()};

    let mut mapper = unsafe {
        OffsetPageTable::new(&mut *level_4_table,
                             memory_info.physical_memory_offset)};

    allocate_pages_mapper(
        &mut memory_info.frame_allocator,
        &mut mapper,
        start_addr, size, flags)
}

/// Allocate pages in the active page table
///