qemu-system-i386: -serial pty: char device redirected to /dev/pts/3 (label serial0)
gnttab: error: ioctl GRANT COPY failed 25 : Inappropriate ioctl for device
VNC server running on 127.0.0.1:5900
qemu-system-i386: /home/abuild/rpmbuild/BUILD/xen-4.12.20181120T144428.668f149048/non-dbg/tools/qemu-xen-dir/block/block-backend.c:903: blk_get_attached_dev_id: Assertion `!blk->legacy_dev' failed.