With latest qemu 7b8a354d4716, RHEL7.2 (with default kernel) VM still can't boot up with IGD.
Thanks, -Xudong > -----Original Message----- > From: Michael S. Tsirkin [mailto:m...@redhat.com] > Sent: Tuesday, January 12, 2016 4:48 PM > To: Hao, Xudong <xudong....@intel.com> > Cc: Gerd Hoffmann <kra...@redhat.com>; Stefano Stabellini > <stefano.stabell...@eu.citrix.com>; Lars Kurth <lars.ku...@citrix.com>; xen- > de...@lists.xensource.com; Lars Kurth <lars.kurth....@gmail.com>; qemu- > de...@nongnu.org; Cao jin <caoj.f...@cn.fujitsu.com>; Stefano Stabellini > <stefano.stabell...@citrix.com> > Subject: Re: [Qemu-devel] [Xen-devel] [PATCH v4] igd-passthrough-i440FX: > convert to realize() > > OK - it's possible that this patch > commit 349a3b1cc9023f67f8fa336cb3c4a8f21a4aaaf3 > Author: Cao jin <caoj.f...@cn.fujitsu.com> > Date: Sat Jan 2 16:02:20 2016 +0800 > > igd-passthrough: fix use of host_pci_config_read > > is required for older guests. > This patch just went it - could you test latest master please? > > On Tue, Jan 12, 2016 at 08:41:13AM +0000, Hao, Xudong wrote: > > Yes, Linux VM update to a 3.18 kernel. > > The RHEL7.2 default kernel (should be 3.10) VM don't boot up with IGD pass- > through, and Windows can't boot up either. > > > > Thanks, > > -Xudong > > > > > > > -----Original Message----- > > > From: Gerd Hoffmann [mailto:kra...@redhat.com] > > > Sent: Monday, January 11, 2016 6:32 PM > > > To: Hao, Xudong <xudong....@intel.com> > > > Cc: Stefano Stabellini <stefano.stabell...@eu.citrix.com>; Lars > > > Kurth <lars.ku...@citrix.com>; xen-de...@lists.xensource.com; > > > Michael S. Tsirkin <m...@redhat.com>; Lars Kurth > > > <lars.kurth....@gmail.com>; qemu- de...@nongnu.org; Cao jin > > > <caoj.f...@cn.fujitsu.com>; Stefano Stabellini > > > <stefano.stabell...@citrix.com> > > > Subject: Re: [Qemu-devel] [Xen-devel] [PATCH v4] igd-passthrough-i440FX: > > > convert to realize() > > > > > > Hi, > > > > > > > I can boot up Linux VM with IGD pass-through with latest qemu > > > > (without any additional patch), guest run 3D "nexuiz" and get 180fps. > > > > > > That is a pretty recent linux guest I assume? > > > Tried older kernels too, possibly even the old userspace xorg driver? > > > Do windows guest work as well? > > > > > > cheers, > > > Gerd > >