Hi Gerd, Thanks for the update.
Actually, I have already got Intel IGD passthru to work couple of days back with git commit being at f02ccf53693758b65843264e077f90cf295e7d98(disas/libvixl: Really suppress gcc 4.6.3 sign-compare warnings). As far as Qemu is concerned, I am using default machine. I just had to modify the creation of PCI devices code a little. And also the ISA bridge code. Host uses 3.* kernel(yes, it's quite old!). Guest is using 4.* kernel. Everything is working without issues. By the way, in my case, Intel IGD is the primary VGA. So, it has been challenging to accomplish this task since a very long period of time. And guest I am using is Android-x86(5.1/Lollipop). Updates to follow . . . Best, Raghavan On Wed, Jan 20, 2016 at 2:30 AM, Gerd Hoffmann <kra...@redhat.com> wrote: > Hi, > > > Based on the Intel IGD passthru support that has been added to > > Qemu/Xen code base, is there any way to use/reuse the same logic > > currently to have a successful passthru of an Intel IGD with Qemu/KVM > > on a Linux host(Ubuntu x86_64) or will that require some more > > work in addition to what Xen code based already has for the IGD > > passthru? > > If you feel a bit adventurous you can try whenever current git master > (or 4.5-rc1 when Linus releases it next weekend) as guest kernel works > for you. > > Recent linux kernels seem to not require the host bridge tweaks any > more. A patch to recognize the qemu q35 south bridge has been added in > the merge window. > > So using the q35 machine type + vfio passthrough without any special igd > tweaks has a fair chance to work. opregion support isn't there yet, so > don't expect laptop panels work correctly. > > cheers, > Gerd > >
