Unsafe operations in unsafe functions require an unsafe block since Rust 2024

src/memory.rs

@@ -1,9 +1,9 @@
 use bootloader::bootinfo::{MemoryMap, MemoryRegionType};
 use x86_64::{
+    PhysAddr, VirtAddr,
     structures::paging::{
         FrameAllocator, Mapper, OffsetPageTable, Page, PageTable, PhysFrame, Size4KiB,
     },
-    PhysAddr, VirtAddr,
 };
 
 /// Initialize a new OffsetPageTable.
@@ -13,9 +13,11 @@ use x86_64::{
 /// `physical_memory_offset`. Also, this function must be only called once
 /// to avoid aliasing `&mut` references (which is undefined behavior).
 pub unsafe fn init(physical_memory_offset: VirtAddr) -> OffsetPageTable<'static> {
+    unsafe {
         let level_4_table = active_level_4_table(physical_memory_offset);
         OffsetPageTable::new(level_4_table, physical_memory_offset)
     }
+}
 
 /// Returns a mutable reference to the active level 4 table.
 ///
@@ -32,7 +34,7 @@ unsafe fn active_level_4_table(physical_memory_offset: VirtAddr) -> &'static mut
     let virt = physical_memory_offset + phys.as_u64();
     let page_table_ptr: *mut PageTable = virt.as_mut_ptr();
 
-    &mut *page_table_ptr // unsafe
+    unsafe { &mut *page_table_ptr }
 }
 
 /// Creates an example mapping for the given page to frame `0xb8000`.