[fedora-virt] [PATCH 2/4] pc: Add backward compatibility options for virtio-serial

[Amit Shah]

virtio-serial-pci can support multiple ports in the current F-13
version that will become upstream version 0.13. Add compatibility options
for the 0.12, 0.11 and 0.10 pc machine types.

Based on upstream commit 8bfbde6d35c82cc376681289dae2de5e18a087a4

Signed-off-by: Amit Shah <amit.shah at redhat.com>
---
 hw/pc.c |   28 ++++++++++++++++++++++++++++
 1 files changed, 28 insertions(+), 0 deletions(-)

diff --git a/hw/pc.c b/hw/pc.c
index d705dd3..e13b17e 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -1330,6 +1330,18 @@ static QEMUMachine pc_machine = {
     .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 = {
@@ -1343,6 +1355,14 @@ 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   = "PCI",
             .property = "rombar",
             .value    = stringify(0),
@@ -1366,6 +1386,14 @@ 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),
-- 
1.6.2.5