hw_x86_64: Switch to client page tables

After activating the client page tables the client context cannot be accessed any longer. The mode transition buffer however is globally mapped and can be used to restore the remaining register values.
2015-02-18 00:40:03 +01:00 · 2015-02-18 00:40:03 +01:00 · 1fc867f1d7
parent 172dec209b
commit 1fc867f1d7
1 changed files with 4 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
@ -115,6 +115,10 @@
 	popq %rsi
 	popq %rbp

+	/* Switch page tables */
+	mov CR3_OFFSET(%rax), %rax
+	mov %rax, %cr3
+
 	1: jmp 1b

 	/* end of the mode transition code */