xen: use direct ops on 64-bit
Enable the use of the direct vcpu-access operations on 64-bit.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index aed7cee..3723034 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -87,14 +87,7 @@
*
* 0: not available, 1: available
*/
-static int have_vcpu_info_placement =
-#ifdef CONFIG_X86_32
- 1
-#else
- 0
-#endif
- ;
-
+static int have_vcpu_info_placement = 1;
static void xen_vcpu_setup(int cpu)
{
@@ -915,11 +908,6 @@
machine_ops = xen_machine_ops;
#ifdef CONFIG_X86_64
- /* Disable until direct per-cpu data access. */
- have_vcpu_info_placement = 0;
-#endif
-
-#ifdef CONFIG_X86_64
/*
* Setup percpu state. We only need to do this for 64-bit
* because 32-bit already has %fs set properly.