[PATCH v3 3/4 gnumach] x86_64/boothdr: Flush segments after ljmp

[Damien Zammit]

Because the point of flushing segments is to
reload them after the pipeline flow is disrupted.

---
 x86_64/boothdr.S | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/x86_64/boothdr.S b/x86_64/boothdr.S
index 7ca26cfc..14de9c07 100644
--- a/x86_64/boothdr.S
+++ b/x86_64/boothdr.S
@@ -163,6 +163,11 @@ switch64:
        mov     %eax,%cr0
 
        lgdt    gdt64pointer
+       ljmp    $BOOT_CS,$boot_entry64
+
+       .code64
+
+boot_entry64:
        movw    $0,%ax
        movw    %ax,%fs
        movw    %ax,%gs
@@ -170,11 +175,7 @@ switch64:
        movw    %ax,%ds
        movw    %ax,%es
        movw    %ax,%ss
-       ljmp    $BOOT_CS,$boot_entry64
-
-       .code64
 
-boot_entry64:
        /* Switch to our own interrupt stack.  */
        movq    $solid_intstack+INTSTACK_SIZE-16, %rax
        andq    $(~15),%rax
-- 
2.51.0