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5823e330b5
linux/drivers/iommu
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Jon Derrick 5823e330b5 iommu/vt-d: Prevent VMD child devices from being remapping targets 
VMD child devices must use the VMD endpoint's ID as the requester.  Because
of this, there needs to be a way to link the parent VMD endpoint's IOMMU
group and associated mappings to the VMD child devices such that attaching
and detaching child devices modify the endpoint's mappings, while
preventing early detaching on a singular device removal or unbinding.

The reassignment of individual VMD child devices devices to VMs is outside
the scope of VMD, but may be implemented in the future. For now it is best
to prevent any such attempts.

Prevent VMD child devices from returning an IOMMU, which prevents it from
exposing an iommu_group sysfs directory and allowing subsequent binding by
userspace-access drivers such as VFIO.

Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2017-08-30 16:43:58 -05:00
..
amd_iommu_init.c iommu/amd: Remove amd_iommu_disabled check from amd_iommu_detect() 2017-06-22 12:54:21 +02:00
amd_iommu_proto.h x86/events, drivers/amd/iommu: Prepare for multiple IOMMUs support 2017-03-30 09:53:55 +02:00
amd_iommu_types.h iommu/amd: Suppress IO_PAGE_FAULTs in kdump kernel 2017-06-16 10:21:05 +02:00
amd_iommu_v2.c iommu/amd: Fix incorrect error handling in amd_iommu_bind_pasid() 2017-04-24 12:33:34 +02:00
amd_iommu.c IOMMU Updates for Linux v4.13 2017-07-12 10:00:04 -07:00
arm-smmu-v3.c iommu/arm-smmu-v3: Add workaround for Cavium ThunderX2 erratum #126 2017-06-23 17:58:04 +01:00
arm-smmu.c iommu/arm-smmu: Remove io-pgtable spinlock 2017-06-23 17:58:01 +01:00
dma-iommu.c IOMMU Updates for Linux v4.13 2017-07-12 10:00:04 -07:00
dmar.c ACPI: Switch to use generic guid_t in acpi_evaluate_dsm() 2017-06-07 12:20:49 +02:00
exynos-iommu.c Merge branches 'arm/exynos', 'arm/omap', 'arm/rockchip', 'arm/mediatek', 'arm/smmu', 'arm/core', 'x86/vt-d', 'x86/amd' and 'core' into next 2017-05-04 18:06:17 +02:00
fsl_pamu_domain.c
fsl_pamu_domain.h
fsl_pamu.c
fsl_pamu.h iommu: Remove pci.h include from trace/events/iommu.h 2017-04-29 00:20:49 +02:00
intel_irq_remapping.c IOMMU Updates for Linux v4.13 2017-07-12 10:00:04 -07:00
intel-iommu.c iommu/vt-d: Prevent VMD child devices from being remapping targets 2017-08-30 16:43:58 -05:00
intel-svm.c iommu/vt-d: Helper function to query if a pasid has any active users 2017-05-17 14:57:56 +02:00
io-pgtable-arm-v7s.c iommu/io-pgtable-arm: Use dma_wmb() instead of wmb() when publishing table 2017-06-23 17:58:02 +01:00
io-pgtable-arm.c iommu/io-pgtable-arm: Use dma_wmb() instead of wmb() when publishing table 2017-06-23 17:58:02 +01:00
io-pgtable.c
io-pgtable.h iommu/io-pgtable: Introduce explicit coherency 2017-06-23 17:58:00 +01:00
iommu-sysfs.c iommu: Make iommu_device_link/unlink take a struct iommu_device 2017-02-10 13:44:57 +01:00
iommu-traces.c
iommu.c iommu: Warn once when device_group callback returns NULL 2017-06-28 13:29:46 +02:00
iova.c Merge branches 'iommu/fixes', 'arm/rockchip', 'arm/renesas', 'arm/smmu', 'arm/core', 'x86/vt-d', 'x86/amd', 's390' and 'core' into next 2017-06-28 14:45:02 +02:00
ipmmu-vmsa.c iommu/ipmmu-vmsa: Fix pgsize_bitmap semicolon typo 2017-05-17 15:21:58 +02:00
irq_remapping.c x86/cpufeature: Replace cpu_has_apic with boot_cpu_has() usage 2016-04-13 11:37:41 +02:00
irq_remapping.h
Kconfig Merge branches 'iommu/fixes', 'arm/rockchip', 'arm/renesas', 'arm/smmu', 'arm/core', 'x86/vt-d', 'x86/amd', 's390' and 'core' into next 2017-06-28 14:45:02 +02:00
Makefile Merge branches 'x86/amd', 'x86/vt-d', 'arm/exynos', 'arm/mediatek', 'arm/msm', 'arm/rockchip', 'arm/smmu' and 'core' into next 2016-07-26 16:02:37 +02:00
msm_iommu_hw-8xxx.h
msm_iommu.c iommu: Remove iommu_register_instance interface 2017-02-10 14:54:37 +01:00
msm_iommu.h iommu/msm: Make use of iommu_device_register interface 2017-02-10 13:44:57 +01:00
mtk_iommu_v1.c iommu/mediatek: Include linux/dma-mapping.h 2017-05-17 14:51:54 +02:00
mtk_iommu.c iommu: Remove iommu_register_instance interface 2017-02-10 14:54:37 +01:00
mtk_iommu.h iommu/mediatek: Make use of iommu_device_register interface 2017-02-10 13:44:57 +01:00
of_iommu.c Merge branch 'WIP.sched/core' into sched/core 2017-06-20 12:28:21 +02:00
omap-iommu-debug.c iommu/omap: Align code with open parenthesis 2016-04-05 17:53:20 +02:00
omap-iommu.c iommu/omap: Return ERR_PTR in device_group call-back 2017-06-28 13:29:45 +02:00
omap-iommu.h iommu/omap: Add iommu-group support 2017-04-20 16:33:59 +02:00
omap-iopgtable.h
rockchip-iommu.c Merge branches 'arm/exynos', 'arm/omap', 'arm/rockchip', 'arm/mediatek', 'arm/smmu', 'arm/core', 'x86/vt-d', 'x86/amd' and 'core' into next 2017-05-04 18:06:17 +02:00
s390-iommu.c iommu/s390: Use iommu_group_get_for_dev() in s390_iommu_add_device() 2017-06-28 12:29:00 +02:00
tegra-gart.c
tegra-smmu.c iommu: Remove pci.h include from trace/events/iommu.h 2017-04-29 00:20:49 +02:00