use pointer address formatter instead of casting

To print addresses of objects, use address pointer formatter directly
instead of casting to other types to print.

src/arch/aarch64/kernel/interrupts.rs

@@ -190,7 +190,7 @@ pub(crate) extern "C" fn do_sync(state: &State) {
 
 			// add page fault handler
 
-			error!("Current stack pointer {:#x}", state as *const _ as u64);
+			error!("Current stack pointer {state:p}");
 			error!("Unable to handle page fault at {:#x}", far);
 			error!("Exception return address {:#x}", ELR_EL1.get());
 			error!("Thread ID register {:#x}", TPIDR_EL0.get());

src/arch/x86_64/kernel/mmio.rs

@@ -74,7 +74,7 @@ pub fn detect_network() -> Result<&'static mut MmioRegisterLayout, &'static str>
 		let version = mmio.get_version();
 
 		if magic != MAGIC_VALUE {
-			trace!("It's not a MMIO-device at {:#X}", mmio as *const _ as usize);
+			trace!("It's not a MMIO-device at {mmio:p}");
 			continue;
 		}
 
@@ -84,20 +84,17 @@ pub fn detect_network() -> Result<&'static mut MmioRegisterLayout, &'static str>
 		}
 
 		// We found a MMIO-device (whose 512-bit address in this structure).
-		trace!("Found a MMIO-device at {:#X}", mmio as *const _ as usize);
+		trace!("Found a MMIO-device at {mmio:p}");
 
 		// Verify the device-ID to find the network card
 		let id = mmio.get_device_id();
 
 		if id != DevId::VIRTIO_DEV_ID_NET {
-			trace!(
-				"It's not a network card at {:#X}",
-				mmio as *const _ as usize
-			);
+			trace!("It's not a network card at {mmio:p}");
 			continue;
 		}
 
-		info!("Found network card at {:#X}", mmio as *const _ as usize);
+		info!("Found network card at {mmio:p}");
 
 		crate::arch::mm::physicalmem::reserve(
 			PhysAddr::from(current_address.align_down(BasePageSize::SIZE as usize)),

src/mm/freelist.rs

@@ -33,11 +33,7 @@ impl FreeList {
 	}
 
 	pub fn allocate(&mut self, size: usize, alignment: Option<usize>) -> Result<usize, AllocError> {
-		trace!(
-			"Allocating {} bytes from Free List {:#X}",
-			size,
-			self as *const Self as usize
-		);
+		trace!("Allocating {} bytes from Free List {self:p}", size);
 
 		let new_size = if let Some(align) = alignment {
 			size + align
@@ -90,10 +86,9 @@ impl FreeList {
 	#[cfg(all(target_arch = "x86_64", not(feature = "pci")))]
 	pub fn reserve(&mut self, address: usize, size: usize) -> Result<(), AllocError> {
 		trace!(
-			"Try to reserve {} bytes at {:#X} from Free List {:#X}",
+			"Try to reserve {} bytes at {:#X} from Free List {self:p}",
 			size,
-			address,
-			self as *const Self as usize
+			address
 		);
 
 		// Find a region in the Free List that has at least the requested size.
@@ -119,10 +114,9 @@ impl FreeList {
 
 	pub fn deallocate(&mut self, address: usize, size: usize) {
 		trace!(
-			"Deallocating {} bytes at {:#X} from Free List {:#X}",
+			"Deallocating {} bytes at {:#X} from Free List {self:p}",
 			size,
-			address,
-			self as *const Self as usize
+			address
 		);
 
 		let end = address + size;