Pull iommufd updates from Jason Gunthorpe: "Two significant new items: - Allow reporting IOMMU HW events to userspace when the events are clearly linked to a device. This is linked to the VIOMMU object and is intended to be used by a VMM to forward HW events to the virtual machine as part of emulating a vIOMMU. ARM SMMUv3 is the first driver to use this mechanism. Like the existing fault events the data is delivered through a simple FD returning event records on read(). - PASID support in VFIO. The "Process Address Space ID" is a PCI feature that allows the device to tag all PCI DMA operations with an ID. The IOMMU will then use the ID to select a unique translation for those DMAs. This is part of Intel's vIOMMU support as VT-D HW requires the hypervisor to manage each PASID entry. The support is generic so any VFIO user could attach any translation to a PASID, and the support should work on ARM SMMUv3 as well. AMD requires additional driver work. Some minor updates, along with fixes: - Prevent using nested parents with fault's, no driver support today - Put a single "cookie_type" value in the iommu_domain to indicate what owns the various opaque owner fields" * tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd: (49 commits) iommufd: Test attach before detaching pasid iommufd: Fix iommu_vevent_header tables markup iommu: Convert unreachable() to BUG() iommufd: Balance veventq->num_events inc/dec iommufd: Initialize the flags of vevent in iommufd_viommu_report_event() iommufd/selftest: Add coverage for reporting max_pasid_log2 via IOMMU_HW_INFO iommufd: Extend IOMMU_GET_HW_INFO to report PASID capability vfio: VFIO_DEVICE_[AT|DE]TACH_IOMMUFD_PT support pasid vfio-iommufd: Support pasid [at|de]tach for physical VFIO devices ida: Add ida_find_first_range() iommufd/selftest: Add coverage for iommufd pasid attach/detach iommufd/selftest: Add test ops to test pasid attach/detach iommufd/selftest: Add a helper to get test device iommufd/selftest: Add set_dev_pasid in mock iommu iommufd: Allow allocating PASID-compatible domain iommu/vt-d: Add IOMMU_HWPT_ALLOC_PASID support iommufd: Enforce PASID-compatible domain for RID iommufd: Support pasid attach/replace iommufd: Enforce PASID-compatible domain in PASID path iommufd/device: Add pasid_attach array to track per-PASID attach ...