x86, 64-bit: __switch_to(): move arch_leave_lazy_cpu_mode() to the right place
authorJeremy Fitzhardinge <jeremy@goop.org>
Wed, 25 Jun 2008 04:19:23 +0000 (00:19 -0400)
committerIngo Molnar <mingo@elte.hu>
Tue, 8 Jul 2008 11:11:10 +0000 (13:11 +0200)
We must leave lazy mode before switching the %fs and %gs selectors.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: xen-devel <xen-devel@lists.xensource.com>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/kernel/process_64.c

index ddc6fcc73dc66a95da0a6f8f43beb29f529e8c23..488eaca47bd8c7a2842be634edbdfc423c13b9aa 100644 (file)
@@ -562,6 +562,15 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 
        load_TLS(next, cpu);
 
+       /*
+        * Leave lazy mode, flushing any hypercalls made here.
+        * This must be done before restoring TLS segments so
+        * the GDT and LDT are properly updated, and must be
+        * done before math_state_restore, so the TS bit is up
+        * to date.
+        */
+       arch_leave_lazy_cpu_mode();
+
        /* 
         * Switch FS and GS.
         */