From 1be06acc235878253977ae75467db591763f31bf Mon Sep 17 00:00:00 2001
From: Johannes Stoelp <johannes.stoelp@gmail.com>
Date: Fri, 10 Dec 2021 23:47:04 +0100
Subject: example:long_mode: Assert phys memory against bytes written from
 guest to virt address.

---
 guest/guest64.S | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'guest/guest64.S')

diff --git a/guest/guest64.S b/guest/guest64.S
index 6629273..a07df0c 100644
--- a/guest/guest64.S
+++ b/guest/guest64.S
@@ -12,6 +12,12 @@
     lea di, [in_dest]       // Destination address.
     insb                    // Read byte from input port dx to ds:di.
 
+    // Write to allocated virtual addresses.
+    mov byte ptr ds:[0x2000], 0xaa
+    mov byte ptr ds:[0x2001], 0xbb
+    mov byte ptr ds:[0x2002], 0xcc
+    mov byte ptr ds:[0x2003], 0xdd
+
     // Trigger `KVM_EXIT_HLT`.
     hlt
 
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