On Mon, Jan 18, 2016 at 04:50:16PM +0000, Xie, Huawei wrote:

On 1/15/2016 12:34 PM, Yuanhan Liu wrote:

quoted

-static void
+static int
 virtio_negotiate_features(struct virtio_hw *hw)
 {
 	uint64_t host_features;

@@ -949,6 +949,22 @@ virtio_negotiate_features(struct virtio_hw *hw)
 	hw->guest_features = vtpci_negotiate_features(hw, host_features);

Here if we are not modern device, we should remove VIRTIO_F_VERSION_1 in
guest features.

VIRTIO_F_VERSION_1 should not be set for legacy virtio device at all.

	--yliu