add launchpad bug reports without comments

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+vfio passtrhough fails at 'No available IOMMU models' on Intel BDW-EP platform
+
+Environment:
+ ------------
+ Host OS (ia32/ia32e/IA64): ia32e
+ Guest OS (ia32/ia32e/IA64): ia32e
+ Guest OS Type (Linux/Windows): linux
+ kvm.git Commit: da3f7ca3
+ qemu.git Commit: 38a762fe 
+ Host Kernel Version: 4.4.0-rc2
+ Hardware: BDW EP (Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz, Grantley-EP)
+
+Bug description:
+ --------------------------
+ when create guest with vt-d assignment using vfio-pci driver, the guest can not be created.
+Warning 'No available IOMMU models'
+
+
+Reproduce steps:
+ ----------------
+ 1. bind device to vfio-pci driver
+ 2. qemu-system-x86_64 -enable-kvm -m 512 -smp 2 -device vfio-pci,host=81:00.0 -net none -drive file=rhel7u2.qcow2,if=none,id=virtio-disk0 -device virtio-blk-pci,drive=virtio-disk0
+
+Current result:
+ ----------------
+ qemu-system-x86_64: -device vfio-pci,host=81:00.0: vfio: No available IOMMU models
+ qemu-system-x86_64: -device vfio-pci,host=81:00.0: vfio: failed to setup container for group 41
+ qemu-system-x86_64: -device vfio-pci,host=81:00.0: vfio: failed to get group 41
+ qemu-system-x86_64: -device vfio-pci,host=81:00.0: Device initialization failed
+
+Expected result:
+ ----------------
+ guest can be created
+Basic root-causing log:
+ ----------------------
+
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