[Spice-devel] [Qemu-devel] [RFC PATCH spice v2 1/2] QXL interface: add functions to identify monitors in the guest

[Gerd Hoffmann]

> 2. Have a single function as follows:
> 
> void spice_qxl_set_device_info(QXLInstance *instance,
>                                const char *device_address,
>                                uint32_t device_display_id_start,
>                                uint32_t device_display_id_count);

How about:

void spice_qxl_set_device_info(QXLInstance *instance,
                               const char *device_address,
                               uint32_t device_display_id);

I don't think we need start+count:

 * For single-head devices device_display_id will be zero.
 * For one-channel-per-head multihead devices (i.e. virtio-gpu)
   device_display_id will enumerate the heads (so everybody can figure
   which channel is which head).
 * For one-channel-per-device multihead devices (i.e. qxl/linux)
   device_display_id will be zero too.  Number of heads is set via
   spice_qxl_set_max_monitors().

cheers,
  Gerd