Comment # 7 on bug 1184585 from Takashi Iwai

OK, then it's one (or more) of the following patches:
 patches.suse/iommu-intel-fix-memleak-in-intel_irq_remapping_alloc
 patches.suse/iommu-vt-d-add-get_domain_info-helper
 patches.suse/iommu-vt-d-avoid-panic-if-iommu-init-fails-in-tboot-system

patches.suse/iommu-vt-d-correctly-check-addr-alignment-in-qi_flush_dev_iotlb_pasid
 patches.suse/iommu-vt-d-do-not-use-flush-queue-when-caching-mode-is-on
 patches.suse/iommu-vt-d-fix-general-protection-fault-in-aux_detach_device
 patches.suse/iommu-vt-d-fix-ineffective-devtlb-invalidation-for-subdevices
 patches.suse/iommu-vt-d-fix-unaligned-addresses-for-intel_flush_svm_range_dev

patches.suse/iommu-vt-d-move-intel_iommu-info-from-struct-intel_svm-to-struct-intel_svm_dev

Joerg, could you check which one could cause the regression?