From 952970ba5651e8f6d1fec7de0366c63a79cadfdb Mon Sep 17 00:00:00 2001 From: Shmulik Ladkani Date: Sun, 13 Dec 2015 10:08:29 +0200 Subject: [PATCH] vmw_pvscsi: Introduce 'x-old-pci-configuration' backword compatability property Following the previous patches, which introduced various changes in pvscsi's pci configuration space (device subsystem id and revision, msi offset), this patch introduces a boolean property 'x-old-pci-configuration' to pvscsi. Its default value is false, exposing the above changes in the pci config space. Setting 'x-old-pci-configuration' to 'on' preserves the old behavior, which allows migration to older versions. Signed-off-by: Shmulik Ladkani Message-Id: <1449994112-7054-4-git-send-email-shmulik.ladkani@ravellosystems.com> Signed-off-by: Paolo Bonzini --- 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 be95cff5e7..e785b8b6ec 100644 --- a/hw/scsi/vmw_pvscsi.c +++ b/hw/scsi/vmw_pvscsi.c @@ -1194,6 +1194,8 @@ static const VMStateDescription vmstate_pvscsi = { 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_END_OF_LIST(), }; diff --git a/include/hw/compat.h b/include/hw/compat.h index d0b1c4f1ef..66e4affa98 100644 --- a/include/hw/compat.h +++ b/include/hw/compat.h @@ -6,6 +6,10 @@ .driver = "virtio-blk-device",\ .property = "scsi",\ .value = "true",\ + },{\ + .driver = "pvscsi",\ + .property = "x-old-pci-configuration",\ + .value = "on",\ },{\ .driver = "e1000",\ .property = "extra_mac_registers",\