hw_x86_64: Restore kernel segment registers

The segment registers are set to reference the kernel data segments of the GDT.
2015-02-20 16:10:26 +01:00 · 2015-02-20 16:10:26 +01:00 · 7b051c0531
parent fb5946b69c
commit 7b051c0531
1 changed files with 7 additions and 0 deletions
--- a/repos/base-hw/src/core/spec/x86_64/mode_transition.s
+++ b/repos/base-hw/src/core/spec/x86_64/mode_transition.s
@ -108,6 +108,13 @@
 	pushq %r9
 	pushq %r8

+	/* Restore kernel segment registers */
+	mov $0x10, %rbx
+	mov %rbx, %ds
+	mov %rbx, %es
+	mov %rbx, %fs
+	mov %rbx, %gs
+
 	1: jmp 1b

 	.global _mt_user_entry_pic