-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>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

3 files changed, 23 insertions, 3 deletions

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 61aba9f..889e888 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1688,6 +1688,20 @@ 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);
@@ -1700,6 +1714,11 @@ 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)
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 91a20cb..1cda5dd 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -234,8 +234,8 @@ static void pc_init1(MachineState *machine,
     pc_vga_init(isa_bus, pci_enabled ? pci_bus : NULL);
 
     /* init basic PC hardware */
-    pc_basic_device_init(isa_bus, gsi, &rtc_state, &floppy, xen_enabled(),
-        0x4);
+    pc_basic_device_init(isa_bus, gsi, &rtc_state, &floppy,
+                         !pc_machine->vmport, 0x4);
 
     pc_nic_init(isa_bus, pci_bus);
 
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index e225c6d..4d9e3cd 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -242,7 +242,8 @@ static void pc_q35_init(MachineState *machine)
     pc_register_ferr_irq(gsi[13]);
 
     /* init basic PC hardware */
-    pc_basic_device_init(isa_bus, gsi, &rtc_state, &floppy, false, 0xff0104);
+    pc_basic_device_init(isa_bus, gsi, &rtc_state, &floppy,
+                         !pc_machine->vmport, 0xff0104);
 
     /* connect pm stuff to lpc */
     ich9_lpc_pm_init(lpc);