[Bug 73834] Launch of Qemu VM (with kvm/vfio/iommu/pci-stub) causes [drm:intel_uncore_check_errors] *ERROR* Unclaimed register before interrupt

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73834

--- Comment #6 from Dave Jopson <duggum at gmail.com> ---
Created attachment 92467
  --> https://bugs.freedesktop.org/attachment.cgi?id=92467&action=edit
dmesg from kernel 3.13.0 with attached i915 patch

This is my dmesg output with a Qemu VM running on a successfully vfio bound
NVidia card. I get no errors but I lose hardware acceleration on my main
graphics card (integrated intel). Inxi and vainfo report:

$ inxi -Gx
Graphics:  Card-1: Intel Xeon E3-1200 v3/4th Gen Core Processor Integrated
Graphics Controller bus-ID: 00:02.0 
           Card-2: NVIDIA GK107 [GeForce GTX 650] bus-ID: 01:00.0 
           X.Org: 1.14.5 drivers: intel (unloaded: fbdev,vesa) Resolution:
1920x1080 at 59.9hz 
           GLX Renderer: Gallium 0.4 on llvmpipe (LLVM 3.3, 256 bits) GLX
Version: 2.1 Mesa 9.2.1 Direct Rendering: Yes

*************************************************

$ vainfo
libva info: VA-API version 0.34.0
libva info: va_getDriverName() returns -1
libva error: va_getDriverName() failed with unknown libva
error,driver_name=(null)
vaInitialize failed with error code -1 (unknown libva error),exit

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