feat(paging): make Page, PhysFrame, and the range types repr(Rust)

Author: mkroening

Changelog.md

@@ -9,6 +9,7 @@
   - `OffsetPageTable`'s `PageTableFrameMapping` implementation is now public as `PhysOffset`.
 - [make range types `!Copy`](https://github.com/rust-osdev/x86_64/pull/581)
   - To migrate, use `.clone()` if necessary.
+- [make `Page`, `PhysFrame`, and the range types `repr(Rust)`](https://github.com/rust-osdev/x86_64/pull/584)
 
 # 0.15.4 – 2025-11-24
 

src/structures/paging/frame.rs

@@ -9,7 +9,6 @@ use core::ops::{Add, AddAssign, Sub, SubAssign};
 
 /// A physical memory frame.
 #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
-#[repr(C)]
 pub struct PhysFrame<S: PageSize = Size4KiB> {
     // TODO: Make private when our minimum supported stable Rust version is 1.61
     pub(crate) start_address: PhysAddr,
@@ -134,7 +133,6 @@ impl<S: PageSize> Sub<PhysFrame<S>> for PhysFrame<S> {
 
 /// An range of physical memory frames, exclusive the upper bound.
 #[derive(Clone, PartialEq, Eq, Hash)]
-#[repr(C)]
 pub struct PhysFrameRange<S: PageSize = Size4KiB> {
     /// The start of the range, inclusive.
     pub start: PhysFrame<S>,
@@ -192,7 +190,6 @@ impl<S: PageSize> fmt::Debug for PhysFrameRange<S> {
 
 /// An range of physical memory frames, inclusive the upper bound.
 #[derive(Clone, PartialEq, Eq, Hash)]
-#[repr(C)]
 pub struct PhysFrameRangeInclusive<S: PageSize = Size4KiB> {
     /// The start of the range, inclusive.
     pub start: PhysFrame<S>,

src/structures/paging/page.rs

@@ -63,7 +63,6 @@ impl Sealed for super::Size1GiB {}
 
 /// A virtual memory page.
 #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
-#[repr(C)]
 pub struct Page<S: PageSize = Size4KiB> {
     start_address: VirtAddr,
     size: PhantomData<S>,
@@ -326,7 +325,6 @@ impl<S: PageSize> Step for Page<S> {
 
 /// A range of pages with exclusive upper bound.
 #[derive(Clone, PartialEq, Eq, Hash)]
-#[repr(C)]
 pub struct PageRange<S: PageSize = Size4KiB> {
     /// The start of the range, inclusive.
     pub start: Page<S>,
@@ -395,7 +393,6 @@ impl<S: PageSize> fmt::Debug for PageRange<S> {
 
 /// A range of pages with inclusive upper bound.
 #[derive(Clone, PartialEq, Eq, Hash)]
-#[repr(C)]
 pub struct PageRangeInclusive<S: PageSize = Size4KiB> {
     /// The start of the range, inclusive.
     pub start: Page<S>,