user/sven/linux.git/include/linux/intel-iommu.h, branch v4.4.2

iommu/vt-d: Implement SVM_FLAG_PRIVATE_PASID to allocate unique PASIDs

2015-10-15T14:35:32Z

Signed-off-by: David Woodhouse

iommu/vt-d: Add callback to device driver on page faults

2015-10-15T14:35:28Z

Signed-off-by: David Woodhouse

iommu/vt-d: Implement page request handling

2015-10-15T14:35:19Z

Largely based on the driver-mode implementation by Jesse Barnes. Signed-off-by: David Woodhouse

iommu/vt-d: Generalise DMAR MSI setup to allow for page request events

2015-10-15T12:22:41Z

Signed-off-by: David Woodhouse

iommu/vt-d: Add basic SVM PASID support

2015-10-15T11:55:45Z

This provides basic PASID support for endpoint devices, tested with a version of the i915 driver. Signed-off-by: David Woodhouse

iommu/vt-d: Add initial support for PASID tables

2015-10-15T10:24:51Z

Add CONFIG_INTEL_IOMMU_SVM, and allocate PASID tables on supported hardware. Signed-off-by: David Woodhouse

iommu/vt-d: Introduce intel_iommu=pasid28, and pasid_enabled() macro

2015-10-15T10:24:45Z

As long as we use an identity mapping to work around the worst of the hardware bugs which caused us to defeature it and change the definition of the capability bit, we *can* use PASID support on the devices which advertised it in bit 28 of the Extended Capability Register. Allow people to do so with 'intel_iommu=pasid28' on the command line. Signed-off-by: David Woodhouse

iommu/vt-d: Use plain writeq() for dmar_writeq() where available

2015-10-13T19:48:23Z

Signed-off-by: David Woodhouse

iommu/vt-d: Split up iommu->domains array

2015-08-12T14:23:33Z

This array is indexed by the domain-id and contains the pointers to the domains attached to this iommu. Modern systems support 65536 domain ids, so that this array has a size of 512kb, per iommu. This is a huge waste of space, as the array is usually sparsely populated. This patch makes the array two-dimensional and allocates the memory for the domain pointers on-demand. Signed-off-by: Joerg Roedel

Merge tag 'iommu-updates-v4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

2015-06-24T01:27:19Z

Pull IOMMU updates from Joerg Roedel: "This time with bigger changes than usual: - A new IOMMU driver for the ARM SMMUv3. This IOMMU is pretty different from SMMUv1 and v2 in that it is configured through in-memory structures and not through the MMIO register region. The ARM SMMUv3 also supports IO demand paging for PCI devices with PRI/PASID capabilities, but this is not implemented in the driver yet. - Lots of cleanups and device-tree support for the Exynos IOMMU driver. This is part of the effort to bring Exynos DRM support upstream. - Introduction of default domains into the IOMMU core code. The rationale behind this is to move functionalily out of the IOMMU drivers to common code to get to a unified behavior between different drivers. The patches here introduce a default domain for iommu-groups (isolation groups). A device will now always be attached to a domain, either the default domain or another domain handled by the device driver. The IOMMU drivers have to be modified to make use of that feature. So long the AMD IOMMU driver is converted, with others to follow. - Patches for the Intel VT-d drvier to fix DMAR faults that happen when a kdump kernel boots. When the kdump kernel boots it re-initializes the IOMMU hardware, which destroys all mappings from the crashed kernel. As this happens before the endpoint devices are re-initialized, any in-flight DMA causes a DMAR fault. These faults cause PCI master aborts, which some devices can't handle properly and go into an undefined state, so that the device driver in the kdump kernel fails to initialize them and the dump fails. This is now fixed by copying over the mapping structures (only context tables and interrupt remapping tables) from the old kernel and keep the old mappings in place until the device driver of the new kernel takes over. This emulates the the behavior without an IOMMU to the best degree possible. - A couple of other small fixes and cleanups" * tag 'iommu-updates-v4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (69 commits) iommu/amd: Handle large pages correctly in free_pagetable iommu/vt-d: Don't disable IR when it was previously enabled iommu/vt-d: Make sure copied over IR entries are not reused iommu/vt-d: Copy IR table from old kernel when in kdump mode iommu/vt-d: Set IRTA in intel_setup_irq_remapping iommu/vt-d: Disable IRQ remapping in intel_prepare_irq_remapping iommu/vt-d: Move QI initializationt to intel_setup_irq_remapping iommu/vt-d: Move EIM detection to intel_prepare_irq_remapping iommu/vt-d: Enable Translation only if it was previously disabled iommu/vt-d: Don't disable translation prior to OS handover iommu/vt-d: Don't copy translation tables if RTT bit needs to be changed iommu/vt-d: Don't do early domain assignment if kdump kernel iommu/vt-d: Allocate si_domain in init_dmars() iommu/vt-d: Mark copied context entries iommu/vt-d: Do not re-use domain-ids from the old kernel iommu/vt-d: Copy translation tables from old kernel iommu/vt-d: Detect pre enabled translation iommu/vt-d: Make root entry visible for hardware right after allocation iommu/vt-d: Init QI before root entry is allocated iommu/vt-d: Cleanup log messages ...