From da2f84d1270d203027d82f778d5bcc1f7a49bab0 Mon Sep 17 00:00:00 2001 From: Shannon Zhao Date: Tue, 28 Apr 2015 19:51:13 +0800 Subject: virtio-scsi: Move DEFINE_VIRTIO_SCSI_FEATURES to virtio-scsi So far virtio-scsi-device can't expose host features to guest while using virtio-mmio because it doesn't set DEFINE_VIRTIO_SCSI_FEATURES on backend or transport. The host features belong to the backends while virtio-scsi-pci, virtio-scsi-s390 and virtio-scsi-ccw set the DEFINE_VIRTIO_SCSI_FEATURES on transports. But they already have the ability to forward property accesses to the backend child. So if we move the host features to backends, it doesn't break the backwards compatibility for them and make host features work while using virtio-mmio. Move DEFINE_VIRTIO_SCSI_FEATURES to the backend virtio-scsi. The transports just sync the host features from backends. Signed-off-by: Shannon Zhao Signed-off-by: Shannon Zhao Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin Reviewed-by: Peter Maydell --- hw/scsi/virtio-scsi.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'hw/scsi') diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c index c9bea06..e242fef 100644 --- a/hw/scsi/virtio-scsi.c +++ b/hw/scsi/virtio-scsi.c @@ -631,6 +631,10 @@ static void virtio_scsi_set_config(VirtIODevice *vdev, static uint32_t virtio_scsi_get_features(VirtIODevice *vdev, uint32_t requested_features) { + VirtIOSCSI *s = VIRTIO_SCSI(vdev); + + /* Firstly sync all virtio-scsi possible supported features */ + requested_features |= s->host_features; return requested_features; } @@ -945,6 +949,7 @@ static void virtio_scsi_device_unrealize(DeviceState *dev, Error **errp) static Property virtio_scsi_properties[] = { DEFINE_VIRTIO_SCSI_PROPERTIES(VirtIOSCSI, parent_obj.conf), + DEFINE_VIRTIO_SCSI_FEATURES(VirtIOSCSI, host_features), DEFINE_PROP_END_OF_LIST(), }; -- cgit v1.1