From d350ae4d96f11566fe2857eceaecd196d286d05b Mon Sep 17 00:00:00 2001
From: Stefano Garzarella <sgarzare@redhat.com>
Date: Mon, 16 Dec 2024 16:37:24 +0100
Subject: [PATCH] kernel/protocols/vtpm: add missing safety comment

Add SAFETY comment around `from_raw_parts_mut()` call.

Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
---
 kernel/src/protocols/vtpm.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/src/protocols/vtpm.rs b/kernel/src/protocols/vtpm.rs
index 66333cfb9..05dd80435 100644
--- a/kernel/src/protocols/vtpm.rs
+++ b/kernel/src/protocols/vtpm.rs
@@ -239,6 +239,7 @@ fn vtpm_command_request(params: &RequestParams) -> Result<(), SvsmReqError> {
         return Err(SvsmReqError::unsupported_call());
     }
 
+    // SAFETY: vaddr is just mapped, and its size is PAGE_SIZE
     let buffer = unsafe { from_raw_parts_mut(vaddr.as_mut_ptr::<u8>(), PAGE_SIZE) };
 
     let response_size = match cmd {