linux-kernel - Re: [PATCH] input/xen-fbfront: advertise either absolute or relative coordinates

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Date:	Tue, 15 Mar 2011 11:41:59 +0000
From:	Stefano Stabellini <stefano.stabellini@...citrix.com>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
CC:	Olaf Hering <olaf@...fle.de>,
	Stefano Stabellini <Stefano.Stabellini@...citrix.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>
Subject: Re: [PATCH] input/xen-fbfront: advertise either absolute or relative
 coordinates

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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