ghcb: remove DerefMut impl

This impl is unused. It is also unsound because we can never have unique ownership over the GHCB as long as it is shared with the host. Signed-off-by: Tom Dohrmann <[email protected]>
coconut-svsm · Sep 26, 2024 · 48b9563 · 48b9563
1 parent 9ea3c59
commit 48b9563
Showing 1 changed file with 1 addition and 7 deletions.
diff --git a/kernel/src/sev/ghcb.rs b/kernel/src/sev/ghcb.rs
@@ -23,7 +23,7 @@ use crate::utils::MemoryRegion;
 use crate::mm::PageBox;
 use core::arch::global_asm;
 use core::mem::{self, offset_of};
-use core::ops::{Deref, DerefMut};
+use core::ops::Deref;
 use core::ptr;
 use core::sync::atomic::{AtomicU16, AtomicU32, AtomicU64, AtomicU8, Ordering};
 
@@ -173,12 +173,6 @@ impl Deref for GhcbPage {
     }
 }
 
-impl DerefMut for GhcbPage {
-    fn deref_mut(&mut self) -> &mut Self::Target {
-        self.0.deref_mut()
-    }
-}
-
 #[repr(C)]
 #[derive(Debug)]
 pub struct GHCB {