pc, Disable vmport initialisation with Xen.

This is because there is not synchronisation of the vcpu register
between Xen and QEMU, so vmport can't work properly.

This patch introduces no_vmport parameter to pc_basic_device_init.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

1 files changed, 8 insertions, 3 deletions

diff --git a/hw/pc.c b/hw/pc.c
index ebdf3b0388..810619756b 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -1082,7 +1082,8 @@ static void cpu_request_exit(void *opaque, int irq, int level)
 }
 
 void pc_basic_device_init(qemu_irq *isa_irq,
-                          ISADevice **rtc_state)
+                          ISADevice **rtc_state,
+                          bool no_vmport)
 {
     int i;
     DriveInfo *fd[MAX_FD];
@@ -1127,8 +1128,12 @@ void pc_basic_device_init(qemu_irq *isa_irq,
     a20_line = qemu_allocate_irqs(handle_a20_line_change, first_cpu, 2);
     i8042 = isa_create_simple("i8042");
     i8042_setup_a20_line(i8042, &a20_line[0]);
-    vmport_init();
-    vmmouse = isa_try_create("vmmouse");
+    if (!no_vmport) {
+        vmport_init();
+        vmmouse = isa_try_create("vmmouse");
+    } else {
+        vmmouse = NULL;
+    }
     if (vmmouse) {
         qdev_prop_set_ptr(&vmmouse->qdev, "ps2_mouse", i8042);
         qdev_init_nofail(&vmmouse->qdev);