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Date: Mon, 17 Mar 2014 10:27:57 +0100
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Subject: Re: [Qemu-devel] [PATCH 3/4] virtio-gpu: v0.3 of the virtio based
	GPU code.
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To: Dave Airlie <airlied@gmail.com>
Cc: Dave Airlie <airlied@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, Anthony Liguori <aliguori@amazon.com>, Gerd Hoffmann <kraxel@redhat.com>

Il 17/03/2014 05:36, Dave Airlie ha scritto:
> I steered away from using config space for anything for the normal
> operation of the GPU after looking at overheads and hearing from S390
> people that config space has some special properties on their hw,

Right, but this is only for the old s390-virtio implementation, and it 
means that the cursor would not work on s390-virtio either.  The new 
one, which looks like real s390 hardware, doesn't have the problem.

> The number of these events should be small in a running system, and
> I'm not sure how we'd lose one.

Are they few even if you resize the viewer window, and this causes a 
stream of display-size changes?

Paolo