1 files changed, 5 insertions, 0 deletions

diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 70ddeaeb1ef3..235c0f4d3861 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -46,6 +46,7 @@
 #include <asm/paravirt.h>
 #include <asm/apic.h>
 #include <asm/page.h>
+#include <asm/xen/pci.h>
 #include <asm/xen/hypercall.h>
 #include <asm/xen/hypervisor.h>
 #include <asm/fixmap.h>
@@ -236,6 +237,7 @@ static __init void xen_init_cpuid_mask(void)
         cpuid_leaf1_edx_mask =
                 ~((1 << X86_FEATURE_MCE)  |  /* disable MCE */
                   (1 << X86_FEATURE_MCA)  |  /* disable MCA */
+                  (1 << X86_FEATURE_MTRR) |  /* disable MTRR */
                   (1 << X86_FEATURE_ACC));   /* thermal monitoring */
 
         if (!xen_initial_domain())
@@ -1184,6 +1186,7 @@ asmlinkage void __init xen_start_kernel(void)
 
         xen_raw_console_write("mapping kernel into physical memory\n");
         pgd = xen_setup_kernel_pagetable(pgd, xen_start_info->nr_pages);
+        xen_ident_map_ISA();
 
         /* Allocate and initialize top and mid mfn levels for p2m structure */
         xen_build_mfn_list_list();
@@ -1222,6 +1225,8 @@ asmlinkage void __init xen_start_kernel(void)
                 add_preferred_console("xenboot", 0, NULL);
                 add_preferred_console("tty", 0, NULL);
                 add_preferred_console("hvc", 0, NULL);
+                if (pci_xen)
+                        x86_init.pci.arch_init = pci_xen_init;
         } else {
                 /* Make sure ACS will be enabled */
                 pci_request_acs();