Commit 952970ba authored by Shmulik Ladkani's avatar Shmulik Ladkani Committed by Paolo Bonzini
Browse files

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: default avatarShmulik Ladkani <shmulik.ladkani@ravellosystems.com>
Message-Id: <1449994112-7054-4-git-send-email-shmulik.ladkani@ravellosystems.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 836fc48c

hw/scsi/vmw_pvscsi.c

+2 −0
Original line number Diff line number Diff line
@@ -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(),

};

include/hw/compat.h

+4 −0
Original line number Diff line number Diff line
@@ -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",\