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Date: Thu, 11 Oct 2018 15:20:47 +0200
From: Gerd Hoffmann <kraxel@redhat.com>
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Subject: Re: [Qemu-devel] [Spice-devel] [RFC PATCH spice 1/2] QXL interface:
 add functions to identify monitors in the guest
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To: =?utf-8?B?THVrw6HFoSBIcsOhemvDvQ==?= <lhrazky@redhat.com>
Cc: Jonathon Jongsma <jjongsma@redhat.com>, spice-devel@lists.freedesktop.org, qemu-devel@nongnu.org

> The plan was (and still is) to limit the use cases to the following
> two:
> 
> * Legacy QXL on linux with multiple monitors per display channel, but
> only this single display channel. Multiple display channels are not
> supported in this case, so no streaming etc.
> 
> * Limit the number of monitors per display channel to one for all other
> cases.

Right, I mis-remembered.

> With these limitations, the display_id = channel_id + monitor_id
> formula that is used on the client remains unique.

And in case no qxl card is in use we even have display_id == channel_id.

So, do we need this add display_id function at all?

cheers,
  Gerd