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virtio: introduce qemu_get/put_virtqueue_element

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Move allocation to virtio functions also when loading/saving a
VirtQueueElement.  This will also let the load/save functions
keep backwards compatibility when the VirtQueueElement layout
is changed.

Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Paolo Bonzini 2016-01-31 11:28:59 +01:00 • committed by Michael S. Tsirkin
parent 51b19ebe43
commit ab281c1781
5 changed files with 23 additions and 19 deletions
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10
hw/char/virtio-serial-bus.c
View file

@ -646,9 +646,7 @@ static void virtio_serial_save_device(VirtIODevice *vdev, QEMUFile *f)
if (elem_popped) {
qemu_put_be32s(f, &port->iov_idx);
qemu_put_be64s(f, &port->iov_offset);
qemu_put_buffer(f, (unsigned char *)port->elem,
sizeof(VirtQueueElement));
qemu_put_virtqueue_element(f, port->elem);
}
}
}
@ -723,10 +721,8 @@ static int fetch_active_ports_list(QEMUFile *f, int version_id,
qemu_get_be32s(f, &port->iov_idx);
qemu_get_be64s(f, &port->iov_offset);
port->elem = g_new(VirtQueueElement, 1);
qemu_get_buffer(f, (unsigned char *)port->elem,
sizeof(VirtQueueElement));
virtqueue_map(port->elem);
port->elem =
qemu_get_virtqueue_element(f, sizeof(VirtQueueElement));
/*
* Port was throttled on source machine. Let's