From: Jeremy Fitzhardinge <jeremy@goop.org>
Date: Mon, 2 Feb 2009 21:55:54 +0000 (-0800)
Subject: xen: use direct ops on 64-bit
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=e4d0407185cdbdcfd99fc23bde2e5454bbc46329;p=deliverable%2Flinux.git

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 aed7ceeb4b65..37230342c2c4 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -87,14 +87,7 @@ struct shared_info *HYPERVISOR_shared_info = (void *)&xen_dummy_shared_info;
  *
  * 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)
 {
@@ -914,11 +907,6 @@ asmlinkage void __init xen_start_kernel(void)
 
 	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