From 20b9dd75c8525003bd53243f52766dde9daace46 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Thu, 21 May 2015 16:40:24 +0200
Subject: add a 16-bit data segment

Otherwise the real mode data segments keep G=D=1.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 linuxboot.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'linuxboot.c')

diff --git a/linuxboot.c b/linuxboot.c
index cc64811..9671fd7 100644
--- a/linuxboot.c
+++ b/linuxboot.c
@@ -130,7 +130,9 @@ void boot_bzimage(struct linuxboot_args *args)
  */
 asm("pm16_boot_linux:"
 	    ".code16;"
-	    "mov $0, %eax; mov %eax, %cr0;"
+	    "mov $0x20, %ax; mov %ax, %ds; mov %ax, %es;"
+	    "mov %ax, %fs; mov %ax, %gs; mov %ax, %ss;"
+	    "xor %eax, %eax; mov %eax, %cr0;"
 	    "ljmpl $0xf000, $(1f - 0xf0000); 1:"
 	    "mov %bx, %ds; mov %bx, %es;"
 	    "mov %bx, %fs; mov %bx, %gs; mov %bx, %ss;"
-- 
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