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[Xen-devel] Re: [PATCH] input/xen-fbfront: advertise either absolute or

To: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Subject: [Xen-devel] Re: [PATCH] input/xen-fbfront: advertise either absolute or relative coordinates
From: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Date: Tue, 15 Mar 2011 11:41:59 +0000
Cc: Olaf Hering <olaf@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, Stefano Stabellini <Stefano.Stabellini@xxxxxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, Jeremy Fitzhardinge <jeremy@xxxxxxxx>, "linux-input@xxxxxxxxxxxxxxx" <linux-input@xxxxxxxxxxxxxxx>
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On Tue, 15 Mar 2011, Dmitry Torokhov wrote:
> > Yes, as mentioned in the description above, using absolute coordinates in
> > the guests X11 is prefered because it avoids that the guest mouse
> > pointer gets out of sync with the host/desktop mouse pointer.
> > Very old Xen versions did not send absolute coordinates, but recent
> > versions do.
> > 
> OK, as long as we have understanding that there is no concern with
> migrating to a version of hypervisor that does not support absolute
> coordinates reporting.

Absolute coordinates have been present in xenfb since years now, so I
don't think is a concern anymore.

> BTW, I believe the code should be rearranged a bit, like in the patch
> below (this way we do not set up abs params if device works in relative
> mode).

Looks fine, thanks!
Would you be OK with carrying this patch in your tree or do you want me
to add it to mine?

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