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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 <shmulik.ladkani@ravellosystems.com> Message-Id: <1449994112-7054-4-git-send-email-shmulik.ladkani@ravellosystems.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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@ -1194,6 +1194,8 @@ static const VMStateDescription vmstate_pvscsi = {
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static Property pvscsi_properties[] = {
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DEFINE_PROP_UINT8("use_msg", PVSCSIState, use_msg, 1),
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DEFINE_PROP_BIT("x-old-pci-configuration", PVSCSIState, compat_flags,
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PVSCSI_COMPAT_OLD_PCI_CONFIGURATION_BIT, false),
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DEFINE_PROP_END_OF_LIST(),
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};
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@ -6,6 +6,10 @@
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.driver = "virtio-blk-device",\
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.property = "scsi",\
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.value = "true",\
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},{\
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.driver = "pvscsi",\
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.property = "x-old-pci-configuration",\
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.value = "on",\
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},{\
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.driver = "e1000",\
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.property = "extra_mac_registers",\
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