From 453affb1010c6d53f280d17c76bac4329abbb918 Mon Sep 17 00:00:00 2001
From: Luke <luke.wilde@live.co.uk>
Date: Wed, 26 Aug 2020 03:51:05 +0100
Subject: [PATCH] Kernel: Add shutdown commands for other virtualizers

Source: https://wiki.osdev.org/Shutdown
---
 Kernel/Syscalls/shutdown.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Kernel/Syscalls/shutdown.cpp b/Kernel/Syscalls/shutdown.cpp
index a00343bec86..ddfb09c46e2 100644
--- a/Kernel/Syscalls/shutdown.cpp
+++ b/Kernel/Syscalls/shutdown.cpp
@@ -63,7 +63,13 @@ int Process::sys$halt()
     dbg() << "syncing mounted filesystems...";
     FS::sync();
     dbg() << "attempting system shutdown...";
+    // QEMU Shutdown
     IO::out16(0x604, 0x2000);
+    // If we're here, the shutdown failed. Try VirtualBox shutdown.
+    IO::out16(0x4004, 0x3400);
+    // VirtualBox shutdown failed. Try Bochs/Old QEMU shutdown.
+    IO::out16(0xb004, 0x2000);
+    dbg() << "shutdown attempts failed, applications will stop responding.";
 
     return 0;
 }