[Qemu-devel] [PATCH 2/3] pc: Add backward compatibility options for virtio-serial

[Amit Shah <amit.shah@redhat.com>]

virtio-serial-pci can support multiple ports in the current development
version that will become 0.13. Add compatibility options for the 0.12
and 0.11 pc machine types.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
---
 hw/pc.c |   29 +++++++++++++++++++++++++++++
 1 files changed, 29 insertions(+), 0 deletions(-)

diff --git a/hw/pc.c b/hw/pc.c
index 7c9a24e..49a95ba 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -1065,6 +1065,18 @@ static QEMUMachine pc_machine_v0_12 = {
     .desc = "Standard PC",
     .init = pc_init_pci,
     .max_cpus = 255,
+    .compat_props = (GlobalProperty[]) {
+        {
+            .driver   = "virtio-serial-pci",
+            .property = "max_nr_ports",
+            .value    = stringify(1),
+        },{
+            .driver   = "virtio-serial-pci",
+            .property = "vectors",
+            .value    = stringify(0),
+        },
+        { /* end of list */ }
+    }
 };
 
 static QEMUMachine pc_machine_v0_11 = {
@@ -1078,6 +1090,14 @@ static QEMUMachine pc_machine_v0_11 = {
             .property = "vectors",
             .value    = stringify(0),
         },{
+            .driver   = "virtio-serial-pci",
+            .property = "max_nr_ports",
+            .value    = stringify(1),
+        },{
+            .driver   = "virtio-serial-pci",
+            .property = "vectors",
+            .value    = stringify(0),
+        },{
             .driver   = "ide-drive",
             .property = "ver",
             .value    = "0.11",
@@ -1109,6 +1129,14 @@ static QEMUMachine pc_machine_v0_10 = {
             .property = "class",
             .value    = stringify(PCI_CLASS_DISPLAY_OTHER),
         },{
+            .driver   = "virtio-serial-pci",
+            .property = "max_nr_ports",
+            .value    = stringify(1),
+        },{
+            .driver   = "virtio-serial-pci",
+            .property = "vectors",
+            .value    = stringify(0),
+        },{
             .driver   = "virtio-net-pci",
             .property = "vectors",
             .value    = stringify(0),
@@ -1143,6 +1171,7 @@ static QEMUMachine isapc_machine = {
 static void pc_machine_init(void)
 {
     qemu_register_machine(&pc_machine);
+    qemu_register_machine(&pc_machine_v0_12);
     qemu_register_machine(&pc_machine_v0_11);
     qemu_register_machine(&pc_machine_v0_10);
     qemu_register_machine(&isapc_machine);
-- 
1.6.2.5