fix: appease clippy 1.80.0

It now detect unneeded cfg attributes (nice!) and complained about some
deadcode that wasn't actually dead.

Signed-off-by: Patrick Roy <roypat@amazon.co.uk>

Author: roypat

benches/aarch64/mod.rs

@@ -22,6 +22,7 @@ fn create_guest_memory() -> GuestMemoryMmap {
 }
 
 #[derive(Clone, Copy, Default)]
+#[allow(dead_code)]
 pub struct FdtPlaceholder([u8; FDT_MAX_SIZE]);
 
 // SAFETY: The layout of the structure is fixed and can be initialized by

src/configurator/aarch64/fdt.rs

@@ -106,6 +106,7 @@ mod tests {
     }
 
     #[derive(Clone, Copy, Default)]
+    #[allow(dead_code)]  // rustc thinks the field is never read, but it is via `ByteValued` impl
     struct FdtPlaceholder([u8; FDT_MAX_SIZE]);
     unsafe impl ByteValued for FdtPlaceholder {}
 

src/configurator/aarch64/mod.rs

@@ -4,6 +4,4 @@
 
 //! Traits and structs for configuring and loading boot parameters on `aarch64`.
 
-#![cfg(target_arch = "aarch64")]
-
 pub mod fdt;

src/loader/aarch64/mod.rs

@@ -9,7 +9,5 @@
 
 //! Traits and structs for loading `aarch64` kernels into guest memory.
 
-#![cfg(target_arch = "aarch64")]
-
 #[cfg(feature = "pe")]
 pub mod pe;

src/loader/aarch64/pe/mod.rs

@@ -10,8 +10,6 @@
 
 //! Traits and structs for loading pe image kernels into guest memory.
 
-#![cfg(feature = "pe")]
-
 use std::fmt;
 use std::io::{Read, Seek, SeekFrom};