style(uhyve): fix some random clippy errors, add todo

Author: n0toose

src/fs/uhyve.rs

@@ -13,7 +13,7 @@ use uhyve_interface::v2::Hypercall;
 use uhyve_interface::v2::parameters::{
 	CloseParams, LseekParams, OpenParams, ReadParams, UnlinkParams, WriteParams,
 };
-use uhyve_interface::{GuestPhysAddr, GuestVirtAddr};
+use uhyve_interface::GuestPhysAddr;
 
 use crate::arch::mm::paging;
 use crate::env::fdt;

src/syscalls/interfaces/uhyve.rs

@@ -1,6 +1,6 @@
 use core::ptr;
 
-use memory_addresses::{PhysAddr, VirtAddr};
+use memory_addresses::VirtAddr;
 use uhyve_interface::v2::parameters::{ExitParams, SerialWriteBufferParams};
 use uhyve_interface::v2::{Hypercall, HypercallAddress};
 
@@ -48,7 +48,7 @@ fn hypercall_data(hypercall: &Hypercall<'_>) -> u64 {
 #[inline]
 #[allow(unused_variables)] // until riscv64 is implemented
 pub(crate) fn uhyve_hypercall(hypercall: Hypercall<'_>) {
-	let mut ptr = HypercallAddress::from(&hypercall) as u64;
+	let ptr = HypercallAddress::from(&hypercall) as u64;
 	let data = hypercall_data(&hypercall);
 
 	#[cfg(target_arch = "x86_64")]
@@ -76,6 +76,7 @@ pub struct Uhyve;
 
 impl SyscallInterface for Uhyve {
 	fn shutdown(&self, error_code: i32) -> ! {
+		// FIXME: fix negative integers
 		let sysexit = ExitParams { arg: error_code };
 		uhyve_hypercall(Hypercall::Exit(error_code));