From a4d86166760a6fb0de032f14de605ad232494908 Mon Sep 17 00:00:00 2001
From: Wei Liu <liuwe@microsoft.com>
Date: Wed, 10 Nov 2021 14:52:41 +0000
Subject: [PATCH] arch: x86_64: tdx: drop one unsafe call in code

Implement Default trait for TdvfDescriptor and drop one unsafe in code.

No functional change.

Signed-off-by: Wei Liu <liuwe@microsoft.com>
---
 arch/src/x86_64/tdx/mod.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/src/x86_64/tdx/mod.rs b/arch/src/x86_64/tdx/mod.rs
index 5e0c4adef..ee6f0b243 100644
--- a/arch/src/x86_64/tdx/mod.rs
+++ b/arch/src/x86_64/tdx/mod.rs
@@ -25,6 +25,7 @@ pub enum TdvfError {
 
 // TDVF_DESCRIPTOR
 #[repr(packed)]
+#[derive(Default)]
 pub struct TdvfDescriptor {
     signature: [u8; 4],
     length: u32,
@@ -128,7 +129,7 @@ pub fn parse_tdvf_sections(file: &mut File) -> Result<Vec<TdvfSection>, TdvfErro
     file.seek(SeekFrom::Start(descriptor_offset))
         .map_err(TdvfError::ReadDescriptor)?;
 
-    let mut descriptor: TdvfDescriptor = unsafe { std::mem::zeroed() };
+    let mut descriptor: TdvfDescriptor = Default::default();
     // Safe as we read exactly the size of the descriptor header
     file.read_exact(unsafe {
         std::slice::from_raw_parts_mut(