From 79ab9cce18de191444ec6ff599ee25308f3d3229 Mon Sep 17 00:00:00 2001
From: Gunnar Beutner <gbeutner@serenityos.org>
Date: Sat, 26 Jun 2021 17:24:43 +0200
Subject: [PATCH] Kernel: Clear segment registers on x86_64

They're supposedly unused but iretq doesn't like ss being non-zero.
---
 Kernel/Arch/x86/x86_64/Boot/boot.S | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Kernel/Arch/x86/x86_64/Boot/boot.S b/Kernel/Arch/x86/x86_64/Boot/boot.S
index ba65ee00d5c..85554d806d5 100644
--- a/Kernel/Arch/x86/x86_64/Boot/boot.S
+++ b/Kernel/Arch/x86/x86_64/Boot/boot.S
@@ -265,6 +265,13 @@ start:
 
 .code64
 1:
+    mov $0, %ax
+    mov %ax, %ss
+    mov %ax, %ds
+    mov %ax, %es
+    mov %ax, %fs
+    mov %ax, %gs
+
     call init
     add $4, %rsp