From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57724) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XhfAG-0006PC-1s for qemu-devel@nongnu.org; Fri, 24 Oct 2014 09:44:30 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XhfA9-0001Um-Q6 for qemu-devel@nongnu.org; Fri, 24 Oct 2014 09:44:24 -0400 Received: from mx1.redhat.com ([209.132.183.28]:26114) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XhfA9-0001UW-Iv for qemu-devel@nongnu.org; Fri, 24 Oct 2014 09:44:17 -0400 Date: Fri, 24 Oct 2014 16:47:47 +0300 From: "Michael S. Tsirkin" Message-ID: <20141024134747.GA6024@redhat.com> References: <20140901060506.GA20186@redhat.com> <54042514.6090206@intel.com> <003AAFE53969E14CB1F09B6FD68C3CD478F16D2A@ORSMSX101.amr.corp.intel.com> <54277979.7070408@intel.com> <20140929100111.GA32459@redhat.com> <542A18BD.2060008@intel.com> <20141007072653.GB2424@redhat.com> <543622CC.6050807@intel.com> <20141012095021.GC9567@redhat.com> <544A0174.7000003@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <544A0174.7000003@intel.com> Subject: Re: [Qemu-devel] [Xen-devel] [PATCH 2/2] xen:i386:pc_piix: create isa bridge specific to IGD passthrough List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Chen, Tiejun" Cc: Paolo Bonzini , "xen-devel@lists.xensource.com" , "qemu-devel@nongnu.org" , Konrad Rzeszutek Wilk On Fri, Oct 24, 2014 at 03:36:20PM +0800, Chen, Tiejun wrote: > >I think the point was mostly to reserve 1f to prevent > >devices from using it. > >As we populate slots in order it doesn't seem to important ... > > If we populate slot at !1f GFX driver can't find this ISA bridge. Right, but I mean if no special options are used, 1f will typically stay free without any effort on our side. -- MST