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Re: [Qemu-devel] [PATCH] spice: add display & head options

From: Gerd Hoffmann
Subject: Re: [Qemu-devel] [PATCH] spice: add display & head options
Date: Wed, 22 Feb 2017 11:40:48 +0100


>         The second way is a single display channel with a single, big
>         surface
>         for all heads.  Then -- with spice-agent help -- guest and
>         client
>         negotiate which region of the big display gets scanned out to
>         which
>         head.

> My understanding is that "head" will not work correctly with QXL (only
> head 0, but can be a multi-head QXL),

For the second way yes, because in that case "head" is a qxl/spice
private thing and not visible outside.  You'll see that for example in
case you try to screendump or connect with vnc.  No heads, only the big


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