[Qemu-devel] [PATCH v2 6/6] vmw_pvscsi: Introduce 'x-disable-pcie' backword compatability property

[Shmulik Ladkani <shmulik.ladkani@ravellosystems.com>]

Following the previous patch which changed pvscsi to be a pci express
device, this patch introduces a boolean property 'x-disable-pcie'.

Its default value is false, exposing pvscsi as a pcie device.

Setting 'x-disable-pcie' to 'on' preserves the old 'pci device' (non
express) behavior. This allows migration to older versions.

Signed-off-by: Shmulik Ladkani <shmulik.ladkani@ravellosystems.com>
---
 hw/scsi/vmw_pvscsi.c | 2 ++
 include/hw/compat.h  | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/hw/scsi/vmw_pvscsi.c b/hw/scsi/vmw_pvscsi.c
index fb53b24..6b4b989 100644
--- a/hw/scsi/vmw_pvscsi.c
+++ b/hw/scsi/vmw_pvscsi.c
@@ -1241,6 +1241,8 @@ static Property pvscsi_properties[] = {
     DEFINE_PROP_UINT8("use_msg", PVSCSIState, use_msg, 1),
     DEFINE_PROP_BIT("x-old-pci-configuration", PVSCSIState, compat_flags,
                     PVSCSI_COMPAT_OLD_PCI_CONFIGURATION_BIT, false),
+    DEFINE_PROP_BIT("x-disable-pcie", PVSCSIState, compat_flags,
+                    PVSCSI_COMPAT_DISABLE_PCIE_BIT, false),
     DEFINE_PROP_END_OF_LIST(),
 };
 
diff --git a/include/hw/compat.h b/include/hw/compat.h
index 66e4aff..bcb36ef 100644
--- a/include/hw/compat.h
+++ b/include/hw/compat.h
@@ -11,6 +11,10 @@
             .property = "x-old-pci-configuration",\
             .value    = "on",\
         },{\
+            .driver   = "pvscsi",\
+            .property = "x-disable-pcie",\
+            .value    = "on",\
+        },{\
             .driver   = "e1000",\
             .property = "extra_mac_registers",\
             .value    = "off",\
-- 
1.9.1