diff -ur -x .cproject -x .project -x '*.swp' xen-4.6.1/tools/qemu-xen/hw/xen/xen_pt_config_init.c xen-4.6.1-new/tools/qemu-xen/hw/xen/xen_pt_config_init.c
--- xen-4.6.1/tools/qemu-xen/hw/xen/xen_pt_config_init.c	2016-01-06 18:42:43.000000000 +0200
+++ xen-4.6.1-new/tools/qemu-xen/hw/xen/xen_pt_config_init.c	2016-07-12 21:22:40.331000000 +0300
@@ -896,8 +896,8 @@
     {
         .offset     = PCI_EXP_DEVCTL,
         .size       = 2,
-        .init_val   = 0x2810,
-        .ro_mask    = 0x8400,
+        .init_val   = 0x2010,
+        .ro_mask    = 0x8C00,
         .emu_mask   = 0xFFFF,
         .init       = xen_pt_common_reg_init,
         .u.w.read   = xen_pt_word_reg_read,
diff -ur -x .cproject -x .project -x '*.swp' xen-4.6.1/tools/qemu-xen-traditional/hw/pass-through.c xen-4.6.1-new/tools/qemu-xen-traditional/hw/pass-through.c
--- xen-4.6.1/tools/qemu-xen-traditional/hw/pass-through.c	2016-01-04 17:35:42.000000000 +0200
+++ xen-4.6.1-new/tools/qemu-xen-traditional/hw/pass-through.c	2016-07-11 23:45:34.317000000 +0300
@@ -601,8 +601,8 @@
     {
         .offset     = PCI_EXP_DEVCTL,
         .size       = 2,
-        .init_val   = 0x2810,
-        .ro_mask    = 0x8400,
+        .init_val   = 0x2010,
+        .ro_mask    = 0x8C00,
         .emu_mask   = 0xFFFF,
         .init       = pt_common_reg_init,
         .u.w.read   = pt_word_reg_read,