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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Launch of Qemu VM (with kvm/vfio/iommu/pci-stub) causes [drm:intel_uncore_check_errors] *ERROR* Unclaimed register before interrupt"
href="https://bugs.freedesktop.org/show_bug.cgi?id=73834#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Launch of Qemu VM (with kvm/vfio/iommu/pci-stub) causes [drm:intel_uncore_check_errors] *ERROR* Unclaimed register before interrupt"
href="https://bugs.freedesktop.org/show_bug.cgi?id=73834">bug 73834</a>
from <span class="vcard"><a class="email" href="mailto:duggum@gmail.com" title="Dave Jopson <duggum@gmail.com>"> <span class="fn">Dave Jopson</span></a>
</span></b>
<pre>Sorry, hit save before I was finished...
I am trying to run a Qemu virtual machine using kvm/iommu/vfio/pci-stub with a
discreet nVidia GTX-650 bound using vfio, and whenever I launch the virtual
machine, I get the following error:
[drm:intel_uncore_check_errors] *ERROR* Unclaimed register before interrupt
and the VM fails to fully launch.
If I apply the patch attached as i915.patch, the VM launches fine, but I lose
hardware acceleration as my graphics driver does not load and the Gallium GLX
renderer takes over instead of Mesa DRI.
I have attached my dmesg with drm.debug=0xe set. One is before I launch the VM,
and the other is after. I have also included (system-data.txt) the output of
inxi -F and vainfo.</pre>
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