From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53631) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XC3UQ-0006Yt-5l for qemu-devel@nongnu.org; Tue, 29 Jul 2014 05:14:39 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XC3UL-0005Pz-7f for qemu-devel@nongnu.org; Tue, 29 Jul 2014 05:14:34 -0400 Received: from mga03.intel.com ([143.182.124.21]:5766) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XC3UK-0005Pt-Sn for qemu-devel@nongnu.org; Tue, 29 Jul 2014 05:14:29 -0400 Message-ID: <53D765EE.6020406@intel.com> Date: Tue, 29 Jul 2014 17:14:22 +0800 From: "Chen, Tiejun" MIME-Version: 1.0 References: <20140702162337.GB32380@laptop.dumpdata.com> <20140703073212.GA20828@redhat.com> <20140703182611.GH13710@konrad-lan.dumpdata.com> <20140703120928.3a1be7d4@jbarnes-desktop> <20140703202740.GC30281@redhat.com> <003AAFE53969E14CB1F09B6FD68C3CD478E9CB9F@ORSMSX106.amr.corp.intel.com> <20140718134459.GA24044@laptop.dumpdata.com> <003AAFE53969E14CB1F09B6FD68C3CD478EA03CC@ORSMSX106.amr.corp.intel.com> <20140723205401.GB9322@laptop.dumpdata.com> <53D06509.9010405@intel.com> <20140725170109.GA11179@laptop.dumpdata.com> <53D74649.2080508@intel.com> <53D75C07.2070609@redhat.com> In-Reply-To: <53D75C07.2070609@redhat.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [Intel-gfx] ResettRe: [Xen-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Paolo Bonzini , Konrad Rzeszutek Wilk Cc: "peter.maydell@linaro.org" , "xen-devel@lists.xensource.com" , "anthony@codemonkey.ws" , "Michael S. Tsirkin" , "airlied@linux.ie" , "daniel.vetter@ffwll.ch" , "intel-gfx@lists.freedesktop.org" , "Kay, Allen M" , "Kelly.Zytaruk@amd.com" , Jesse Barnes , "qemu-devel@nongnu.org" , "Zhang, Yang Z" , Stefano Stabellini , Ross Philipson , Anthony Perard On 2014/7/29 16:32, Paolo Bonzini wrote: > Il 29/07/2014 08:59, Chen, Tiejun ha scritto: >>> >>> (see https://lkml.org/lkml/2014/6/19/121) >>>> "gpu:drm:i915:intel_detect_pch: back to check devfn instead of check >>>> class >>>> type". Because Windows always use this way, so I think this point >>>> should be >>>> same between Linux and Windows. >>> >>> Didn't we discuss that we did not want to pass in PCH at all if we can? >> >> I'm a bit confused since I guess I'm missing something important in this >> long discussion. I guess we just fake a simple PCIe device but just has >> PCI_VENDOR_ID_XEN/Real_PCH_Device_ID, and then well probe such a PCIe >> device inside intel_detect_pch(), right? > > Yes, for the special PIIX4 legacy machine type we want to do that and > place the device at 00:1f.0. > Got it. BTW, please review those patches implemented a separate machine, xenigd, firstly. Then I can step on this point. Thanks Tiejun