From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46402) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WmKQ5-0001Et-Bf for qemu-devel@nongnu.org; Mon, 19 May 2014 06:03:49 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WmKQ0-0001X7-Qi for qemu-devel@nongnu.org; Mon, 19 May 2014 06:03:45 -0400 Received: from mga09.intel.com ([134.134.136.24]:35742) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WmKQ0-0001X3-Ln for qemu-devel@nongnu.org; Mon, 19 May 2014 06:03:40 -0400 From: "Chen, Tiejun" Date: Mon, 19 May 2014 10:02:52 +0000 Message-ID: References: <1400237624-8505-1-git-send-email-tiejun.chen@intel.com> <1400237624-8505-7-git-send-email-tiejun.chen@intel.com> <20140516143511.GE3154@phenom.dumpdata.com> In-Reply-To: <20140516143511.GE3154@phenom.dumpdata.com> Content-Language: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Subject: Re: [Qemu-devel] [Xen-devel] [v2][PATCH 6/8] xen, gfx passthrough: support Intel IGD passthrough with VT-D List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Konrad Rzeszutek Wilk Cc: "peter.maydell@linaro.org" , "xen-devel@lists.xensource.com" , "mst@redhat.com" , "stefano.stabellini@eu.citrix.com" , "Kay, Allen M" , "Kelly.Zytaruk@amd.com" , "qemu-devel@nongnu.org" , "Zhang, Yang Z" , "anthony@codemonkey.ws" , "anthony.perard@citrix.com" > -----Original Message----- > From: Konrad Rzeszutek Wilk [mailto:konrad.wilk@oracle.com] > Sent: Friday, May 16, 2014 10:35 PM > To: Chen, Tiejun > Cc: anthony.perard@citrix.com; stefano.stabellini@eu.citrix.com; > mst@redhat.com; Kelly.Zytaruk@amd.com; peter.maydell@linaro.org; > xen-devel@lists.xensource.com; weidong.han@intel.com; Kay, Allen M; > qemu-devel@nongnu.org; jean.guyader@eu.citrix.com; > anthony@codemonkey.ws; Zhang, Yang Z > Subject: Re: [Xen-devel] [v2][PATCH 6/8] xen, gfx passthrough: support In= tel > IGD passthrough with VT-D >=20 > On Fri, May 16, 2014 at 06:53:42PM +0800, Tiejun Chen wrote: > > Some registers of Intel IGD are mapped in host bridge, so it needs to > > passthrough these registers of physical host bridge to guest because > > emulated host bridge in guest doesn't have these mappings. >=20 > When you say mapped - you mean they are aliased - so if I change the valu= e in > the IGD they will change in the host bridge as well, right? >=20 Loos Yang already address some most points, so I just correct others based = on your comments. Thanks Tiejun From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Chen, Tiejun" Subject: Re: [Xen-devel] [v2][PATCH 6/8] xen, gfx passthrough: support Intel IGD passthrough with VT-D Date: Mon, 19 May 2014 10:02:52 +0000 Message-ID: References: <1400237624-8505-1-git-send-email-tiejun.chen@intel.com> <1400237624-8505-7-git-send-email-tiejun.chen@intel.com> <20140516143511.GE3154@phenom.dumpdata.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20140516143511.GE3154@phenom.dumpdata.com> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org Sender: qemu-devel-bounces+gceq-qemu-devel=gmane.org@nongnu.org To: Konrad Rzeszutek Wilk Cc: "peter.maydell@linaro.org" , "xen-devel@lists.xensource.com" , "mst@redhat.com" , "stefano.stabellini@eu.citrix.com" , "Kay, Allen M" , "Kelly.Zytaruk@amd.com" , "qemu-devel@nongnu.org" , "Zhang, Yang Z" , "anthony@codemonkey.ws" , "anthony.perard@citrix.com" List-Id: xen-devel@lists.xenproject.org > -----Original Message----- > From: Konrad Rzeszutek Wilk [mailto:konrad.wilk@oracle.com] > Sent: Friday, May 16, 2014 10:35 PM > To: Chen, Tiejun > Cc: anthony.perard@citrix.com; stefano.stabellini@eu.citrix.com; > mst@redhat.com; Kelly.Zytaruk@amd.com; peter.maydell@linaro.org; > xen-devel@lists.xensource.com; weidong.han@intel.com; Kay, Allen M; > qemu-devel@nongnu.org; jean.guyader@eu.citrix.com; > anthony@codemonkey.ws; Zhang, Yang Z > Subject: Re: [Xen-devel] [v2][PATCH 6/8] xen, gfx passthrough: support In= tel > IGD passthrough with VT-D >=20 > On Fri, May 16, 2014 at 06:53:42PM +0800, Tiejun Chen wrote: > > Some registers of Intel IGD are mapped in host bridge, so it needs to > > passthrough these registers of physical host bridge to guest because > > emulated host bridge in guest doesn't have these mappings. >=20 > When you say mapped - you mean they are aliased - so if I change the valu= e in > the IGD they will change in the host bridge as well, right? >=20 Loos Yang already address some most points, so I just correct others based = on your comments. Thanks Tiejun