-machine vmport=off: Allow disabling of VMWare ioport emulation

This is a pc & q35 only machine opt.

VMWare apparently doesn't like running under QEMU due to our
incomplete emulation of it's special IO Port.  This adds a
pc & q35 property to allow it to be turned off.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Don Slutz <dslutz@verizon.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Richard W.M. Jones <rjones@redhat.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index a27a4b3279..dc2fe6a666 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1710,6 +1710,20 @@ static void pc_machine_set_max_ram_below_4g(Object *obj, Visitor *v,
     pcms->max_ram_below_4g = value;
 }
 
+static bool pc_machine_get_vmport(Object *obj, Error **errp)
+{
+    PCMachineState *pcms = PC_MACHINE(obj);
+
+    return pcms->vmport;
+}
+
+static void pc_machine_set_vmport(Object *obj, bool value, Error **errp)
+{
+    PCMachineState *pcms = PC_MACHINE(obj);
+
+    pcms->vmport = value;
+}
+
 static void pc_machine_initfn(Object *obj)
 {
     PCMachineState *pcms = PC_MACHINE(obj);
@@ -1722,6 +1736,11 @@ static void pc_machine_initfn(Object *obj)
                         pc_machine_get_max_ram_below_4g,
                         pc_machine_set_max_ram_below_4g,
                         NULL, NULL, NULL);
+    pcms->vmport = !xen_enabled();
+    object_property_add_bool(obj, PC_MACHINE_VMPORT,
+                             pc_machine_get_vmport,
+                             pc_machine_set_vmport,
+                             NULL);
 }
 
 static void pc_machine_class_init(ObjectClass *oc, void *data)