[PATCH v4 1/7 gnumach] x86_64: Flush all selectors properly

[Damien Zammit]

---
 x86_64/boothdr.S | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/x86_64/boothdr.S b/x86_64/boothdr.S
index 30062b7b..45d59c06 100644
--- a/x86_64/boothdr.S
+++ b/x86_64/boothdr.S
@@ -169,7 +169,10 @@ switch64:
        .code64
 
 boot_entry64:
-       movw    $0,%ax
+       xorl    %eax, %eax
+       movw    %ax,%ds
+       movw    %ax,%es
+       movw    %ax,%ss
        movw    %ax,%fs
        movw    %ax,%gs
        movw    $BOOT_DS,%ax
-- 
2.51.0