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arch: mptable: Avoid unsafe slice::from_raw_parts()

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The struct already implements ByteValued so this unsafe block can be
changed to call as_slice() from that trait.

Signed-off-by: Rob Bradford <rbradford@meta.com>
This commit is contained in:
Rob Bradford
2026-07-01 10:55:57 +01:00
parent efedfb47e9
commit 330f2fda1c
1 changed files with 2 additions and 5 deletions
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7
arch/src/x86_64/mptable.rs
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@@ -5,7 +5,7 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE-BSD-3-Clause file.
use std::{result, slice};
use std::result;
use libc::c_uchar;
use log::{info, warn};
@@ -101,11 +101,8 @@ const CPU_FEATURE_APIC: u32 = 0x200;
const CPU_FEATURE_FPU: u32 = 0x001;
fn compute_checksum<T: Copy + ByteValued>(v: &T) -> u8 {
let v: *const T = v;
// SAFETY: we are only reading the bytes within the size of the `T` reference `v`.
let v_slice = unsafe { slice::from_raw_parts(v.cast(), size_of::<T>()) };
let mut checksum: u8 = 0;
for i in v_slice.iter() {
for i in v.as_slice().iter() {
checksum = checksum.wrapping_add(*i);
}
checksum