From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: pvfb: Absolute vs relative mouse tracking mystery Date: Sat, 19 Jun 2010 18:40:10 +0100 Message-ID: <4C1D00FA.2060907@goop.org> References: <4BE49501.6000408@goop.org> <4BE86945.9050408@goop.org> <20100619154145.GM17817@reaktio.net> <4C1CE6DE.8000602@goop.org> <20100619162213.GO17817@reaktio.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20100619162213.GO17817@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 05:22 PM, Pasi K=E4rkk=E4inen wrote: > On Sat, Jun 19, 2010 at 04:48:46PM +0100, Jeremy Fitzhardinge wrote: > =20 >> On 06/19/2010 04:41 PM, Pasi K=E4rkk=E4inen wrote: >> =20 >>> On Tue, May 11, 2010 at 11:56:38AM +0100, Stefano Stabellini wrote: >>> =20 >>> =20 >>>> On Mon, 10 May 2010, Jeremy Fitzhardinge wrote: >>>> =20 >>>> =20 >>>>> On 05/10/2010 07:41 AM, Stefano Stabellini wrote: >>>>> =20 >>>>> =20 >>>>>> On Fri, 7 May 2010, Jeremy Fitzhardinge wrote: >>>>>> =20 >>>>>> =20 >>>>>> =20 >>>>>>> On one of my host machines, in PV guests using pvfb I get proper >>>>>>> absolute mouse tracking. >>>>>>> >>>>>>> On another host machine, I get relative tracking in pvfb-using gu= ests. >>>>>>> >>>>>>> Both are using identical versions of Fedora 12, identical domain >>>>>>> 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 >>>>>> relative vs absolute depends on a node on xenstore called >>>>>> "request-abs-pointer" that defaults to 0 and has to be written by = the >>>>>> guest. >>>>>> =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 >>>> 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 >>> Jeremy: Did you figure this out? I'm again seeing this problem on my = Fedora 13 + Xen 4.0.1-rc3-pre box.. >>> =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 > Yeah, it's a CentOS 5.5 guest that gets relative pointer on my Fedora 1= 3 dom0. > On a CentOS5 dom0 it gets absolute though.. > > Fedora 13 guest gets absolute pointer on my Fedora 13 dom0.. > =20 Huh, that is interesting. Maybe there's still a race or something there.= .. J