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 · Aug 30, 2024 · 668512f · 668512f
1 parent 57fd31d
commit 668512f
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 {