From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: pvfb: Absolute vs relative mouse tracking mystery Date: Wed, 21 Jul 2010 18:01:28 -0700 Message-ID: <4C479868.1030806@goop.org> References: <4BE49501.6000408@goop.org> <4BE86945.9050408@goop.org> <20100619154145.GM17817@reaktio.net> <4C1CE6DE.8000602@goop.org> <20100619162213.GO17817@reaktio.net> <4C1D00FA.2060907@goop.org> <20100619175040.GQ17817@reaktio.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20100619175040.GQ17817@reaktio.net> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: =?ISO-8859-1?Q?Pasi_K=E4rkk=E4inen?= Cc: Anthony PERARD , Xen-devel , Stefano Stabellini List-Id: xen-devel@lists.xenproject.org On 06/19/2010 10:50 AM, Pasi K=E4rkk=E4inen wrote: > On Sat, Jun 19, 2010 at 06:40:10PM +0100, Jeremy Fitzhardinge wrote: > =20 >> On 06/19/2010 05:22 PM, Pasi K=E4rkk=E4inen wrote: >> =20 >>> On Sat, Jun 19, 2010 at 04:48:46PM +0100, Jeremy Fitzhardinge wrote: >>> =20 >>> =20 >>>> On 06/19/2010 04:41 PM, Pasi K=E4rkk=E4inen wrote: >>>> =20 >>>> =20 >>>>> On Tue, May 11, 2010 at 11:56:38AM +0100, Stefano Stabellini wrote: >>>>> =20 >>>>> =20 >>>>> =20 >>>>>> On Mon, 10 May 2010, Jeremy Fitzhardinge wrote: >>>>>> =20 >>>>>> =20 >>>>>> =20 >>>>>>> On 05/10/2010 07:41 AM, Stefano Stabellini wrote: >>>>>>> =20 >>>>>>> =20 >>>>>>> =20 >>>>>>>> On Fri, 7 May 2010, Jeremy Fitzhardinge wrote: >>>>>>>> =20 >>>>>>>> =20 >>>>>>>> =20 >>>>>>>> =20 >>>>>>>>> On one of my host machines, in PV guests using pvfb I get prope= r >>>>>>>>> absolute mouse tracking. >>>>>>>>> >>>>>>>>> On another host machine, I get relative tracking in pvfb-using = guests. >>>>>>>>> >>>>>>>>> Both are using identical versions of Fedora 12, identical domai= n >>>>>>>>> configs, and toolstacks and kernels built from the same source.= The log >>>>>>>>> files of the X servers are more or less identical. >>>>>>>>> >>>>>>>>> Help? Any clues? >>>>>>>>> >>>>>>>>> =20 >>>>>>>>> =20 >>>>>>>>> =20 >>>>>>>>> =20 >>>>>>>> relative vs absolute depends on a node on xenstore called >>>>>>>> "request-abs-pointer" that defaults to 0 and has to be written b= y the >>>>>>>> guest. >>>>>>>> =20 >>>>>>>> =20 >>>>>>>> =20 >>>>>>>> =20 >>>>>>> OK, it looks like it is being set, but the guest is still showing >>>>>>> relative behaviour: >>>>>>> >>>>>>> vkbd =3D "" >>>>>>> 0 =3D "" >>>>>>> backend =3D "/local/domain/0/backend/vkbd/5/0" >>>>>>> backend-id =3D "0" >>>>>>> state =3D "4" >>>>>>> page-ref =3D "1137660" >>>>>>> event-channel =3D "11" >>>>>>> request-abs-pointer =3D "1" >>>>>>> >>>>>>> Does this mean qemu-dm's vnc server is not doing the right thing? >>>>>>> =20 >>>>>>> =20 >>>>>>> =20 >>>>>> =20 >>>>>> I think is probably xenfb (that is the framebuffer backend in qemu= ) that >>>>>> is not doing the right thing. >>>>>> Try adding some debug output in hw/xenfb.c:input_connect. >>>>>> >>>>>> =20 >>>>>> =20 >>>>>> =20 >>>>> Jeremy: Did you figure this out? I'm again seeing this problem on m= y Fedora 13 + Xen 4.0.1-rc3-pre box.. >>>>> =20 >>>>> =20 >>>>> =20 >>>> Yes, that should be fixed in current xen-unstable - it was a xenbus >>>> race-condition. What guest are you seeing it in? I've found that I >>>> still don't get absolute pointers in Centos guests. >>>> >>>> =20 >>>> =20 >>> Yeah, it's a CentOS 5.5 guest that gets relative pointer on my Fedora= 13 dom0. >>> On a CentOS5 dom0 it gets absolute though.. >>> >>> Fedora 13 guest gets absolute pointer on my Fedora 13 dom0.. >>> =20 >>> =20 >> Huh, that is interesting. Maybe there's still a race or something the= re... >> >> =20 > Yeah.. maybe. Note that I'm running Xen 4.0.1-rc3-pre and not xen-unsta= ble.. > =20 I just got a Win7 hvm domain working for the first time in a while, and found that it *isn't* getting proper abs updates. I even set usbdevice=3D'tablet' in its config... J