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f4b20bb34c
linux/drivers/iommu
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Jason Gunthorpe f4b20bb34c iommufd: Add kernel support for testing iommufd 
Provide a mock kernel module for the iommu_domain that allows it to run
without any HW and the mocking provides a way to directly validate that
the PFNs loaded into the iommu_domain are correct. This exposes the access
kAPI toward userspace to allow userspace to explore the functionality of
pages.c and io_pagetable.c

The mock also simulates the rare case of PAGE_SIZE > iommu page size as
the mock will operate at a 2K iommu page size. This allows exercising all
of the calculations to support this mismatch.

This is also intended to support syzkaller exploring the same space.

However, it is an unusually invasive config option to enable all of
this. The config option should not be enabled in a production kernel.

Link: https://lore.kernel.org/r/16-v6-a196d26f289e+11787-iommufd_jgg@nvidia.com
Tested-by: Matthew Rosato <mjrosato@linux.ibm.com> # s390
Tested-by: Eric Auger <eric.auger@redhat.com> # aarch64
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2022-11-30 20:16:49 -04:00
..
amd iommu: Add IOMMU_CAP_ENFORCE_CACHE_COHERENCY 2022-11-29 16:34:15 -04:00
arm iommu: Define EINVAL as device/domain incompatibility 2022-11-03 15:51:48 +01:00
intel iommu: Add IOMMU_CAP_ENFORCE_CACHE_COHERENCY 2022-11-29 16:34:15 -04:00
iommufd iommufd: Add kernel support for testing iommufd 2022-11-30 20:16:49 -04:00
apple-dart.c iommu: Add gfp parameter to iommu_alloc_resv_region 2022-10-21 10:49:32 +02:00
dma-iommu.c iommu/dma: Make header private 2022-09-09 09:26:22 +02:00
dma-iommu.h iommu/dma: Make header private 2022-09-09 09:26:22 +02:00
exynos-iommu.c iommu/exynos: Clean up bus_set_iommu() 2022-09-07 14:26:14 +02:00
fsl_pamu_domain.c iommu: Regulate EINVAL in ->attach_dev callback functions 2022-11-01 14:39:59 -03:00
fsl_pamu_domain.h iommu/fsl_pamu: remove the snoop_id field 2021-04-07 10:56:52 +02:00
fsl_pamu.c iommu: Regulate EINVAL in ->attach_dev callback functions 2022-11-01 14:39:59 -03:00
fsl_pamu.h iommu/fsl_pamu: hardcode the window address and size in pamu_config_ppaace 2021-04-07 10:56:52 +02:00
hyperv-iommu.c iommu/hyper-v: Use helper instead of directly accessing affinity 2022-08-04 10:02:09 +01:00
io-pgfault.c iommu: Rename iommu-sva-lib.{c,h} 2022-11-03 15:47:54 +01:00
io-pgtable-arm-v7s.c iommu/io-pgtable-arm-v7s: Add a quirk to allow pgtable PA up to 35bit 2022-07-07 09:42:59 +02:00
io-pgtable-arm.c Merge branches 'apple/dart', 'arm/mediatek', 'arm/omap', 'arm/smmu', 'virtio', 'x86/vt-d', 'x86/amd' and 'core' into next 2022-09-26 15:52:31 +02:00
io-pgtable-arm.h iommu/io-pgtable-arm: Move some definitions to a header 2020-09-28 23:48:06 +01:00
io-pgtable-dart.c iommu/io-pgtable-dart: Add DART PTE support for t6000 2022-09-26 13:49:40 +02:00
io-pgtable.c Merge branches 'apple/dart', 'arm/mediatek', 'arm/omap', 'arm/smmu', 'virtio', 'x86/vt-d', 'x86/amd' and 'core' into next 2022-09-26 15:52:31 +02:00
ioasid.c iommu/sva: Assign a PASID to mm on PASID allocation and free it on mm exit 2022-02-15 11:31:35 +01:00
iommu-debugfs.c iommu: Fix IOMMU debugfs fallout 2019-02-26 11:15:58 +01:00
iommu-sva.c iommu: Rename iommu-sva-lib.{c,h} 2022-11-03 15:47:54 +01:00
iommu-sva.h iommu: Rename iommu-sva-lib.{c,h} 2022-11-03 15:47:54 +01:00
iommu-sysfs.c drivers/iommu: Export core IOMMU API symbols to permit modular drivers 2019-12-23 14:06:05 +01:00
iommu-traces.c
iommu.c iommu: Add device-centric DMA ownership interfaces 2022-11-29 16:34:15 -04:00
iova.c iova: Remove iovad->rcaches check in iova_rcache_get() 2022-09-09 09:27:03 +02:00
ipmmu-vmsa.c iommu: Use EINVAL for incompatible device/domain in ->attach_dev 2022-11-01 14:39:59 -03:00
irq_remapping.c x86: Kill all traces of irq_remapping_get_irq_domain() 2020-10-28 20:26:28 +01:00
irq_remapping.h x86: Kill all traces of irq_remapping_get_irq_domain() 2020-10-28 20:26:28 +01:00
Kconfig iommufd: File descriptor, context, kconfig and makefiles 2022-11-30 20:16:49 -04:00
Makefile iommufd: File descriptor, context, kconfig and makefiles 2022-11-30 20:16:49 -04:00
msm_iommu_hw-8xxx.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 267 2019-06-05 17:30:29 +02:00
msm_iommu.c iommu: Clean up bus_set_iommu() 2022-09-07 14:26:17 +02:00
msm_iommu.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 267 2019-06-05 17:30:29 +02:00
mtk_iommu_v1.c iommu/mtk: Clean up bus_set_iommu() 2022-09-07 14:26:15 +02:00
mtk_iommu.c iommu: Propagate return value in ->attach_dev callback functions 2022-11-01 14:39:59 -03:00
of_iommu.c Revert "iommu/of: Delete usage of driver_deferred_probe_check_state()" 2022-08-23 13:14:02 +02:00
omap-iommu-debug.c iommu/omap: Fix buffer overflow in debugfs 2022-09-07 10:42:28 +02:00
omap-iommu.c iommu: Use EINVAL for incompatible device/domain in ->attach_dev 2022-11-01 14:39:59 -03:00
omap-iommu.h iommu/omap: add support for late attachment of iommu devices 2019-08-09 17:37:10 +02:00
omap-iopgtable.h iommu/omap: Fix -Woverflow warnings when compiling on 64-bit architectures 2020-03-04 16:24:46 +01:00
rockchip-iommu.c iommu: Clean up bus_set_iommu() 2022-09-07 14:26:17 +02:00
s390-iommu.c iommu: Clean up bus_set_iommu() 2022-09-07 14:26:17 +02:00
sprd-iommu.c iommu: Use EINVAL for incompatible device/domain in ->attach_dev 2022-11-01 14:39:59 -03:00
sun50i-iommu.c iommu: Clean up bus_set_iommu() 2022-09-07 14:26:17 +02:00
tegra-gart.c iommu: Use EINVAL for incompatible device/domain in ->attach_dev 2022-11-01 14:39:59 -03:00
tegra-smmu.c iommu/tegra-smmu: Clean up bus_set_iommu() 2022-09-07 14:26:16 +02:00
virtio-iommu.c iommu: Propagate return value in ->attach_dev callback functions 2022-11-01 14:39:59 -03:00