AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-16 23:47:39 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity
fb58fdcd29
linux_dsm_epyc7002/drivers/iommu
History
Mika Westerberg fb58fdcd29 iommu/vt-d: Do not enable ATS for untrusted devices 
Currently Linux automatically enables ATS (Address Translation Service)
for any device that supports it (and IOMMU is turned on). ATS is used to
accelerate DMA access as the device can cache translations locally so
there is no need to do full translation on IOMMU side. However, as
pointed out in [1] ATS can be used to bypass IOMMU based security
completely by simply sending PCIe read/write transaction with AT
(Address Translation) field set to "translated".

To mitigate this modify the Intel IOMMU code so that it does not enable
ATS for any device that is marked as being untrusted. In case this turns
out to cause performance issues we may selectively allow ATS based on
user decision but currently use big hammer and disable it completely to
be on the safe side.

[1] https://www.repository.cam.ac.uk/handle/1810/274352

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Ashok Raj <ashok.raj@intel.com>
Reviewed-by: Joerg Roedel <jroedel@suse.de>
Acked-by: Joerg Roedel <jroedel@suse.de>
2018-12-05 12:01:56 +03:00
..
amd_iommu_debugfs.c iommu/amd: Add basic debugfs infrastructure for AMD IOMMU 2018-07-06 14:06:30 +02:00
amd_iommu_init.c amd/iommu: Fix Guest Virtual APIC Log Tail Address Register 2018-11-12 15:04:24 +01:00
amd_iommu_proto.h iommu/amd: Add basic debugfs infrastructure for AMD IOMMU 2018-07-06 14:06:30 +02:00
amd_iommu_types.h Merge branches 'arm/shmobile', 'arm/renesas', 'arm/msm', 'arm/smmu', 'arm/omap', 'x86/amd', 'x86/vt-d' and 'core' into next 2018-08-08 12:02:27 +02:00
amd_iommu_v2.c Revert "mm, mmu_notifier: annotate mmu notifiers with blockable invalidate callbacks" 2018-10-26 16:25:19 -07:00
amd_iommu.c Merge branches 'arm/renesas', 'arm/smmu', 'ppc/pamu', 'x86/vt-d', 'x86/amd' and 'core' into next 2018-10-10 18:09:37 +02:00
arm-smmu-regs.h iommu/arm-smmu: Split out register defines 2017-08-15 17:34:48 +02:00
arm-smmu-v3.c iommu/arm-smmu-v3: Remove unnecessary wrapper function 2018-10-10 18:09:25 +02:00
arm-smmu.c Merge branches 'arm/renesas', 'arm/smmu', 'ppc/pamu', 'x86/vt-d', 'x86/amd' and 'core' into next 2018-10-10 18:09:37 +02:00
dma-iommu.c Merge branches 'arm/renesas', 'arm/smmu', 'ppc/pamu', 'x86/vt-d', 'x86/amd' and 'core' into next 2018-10-10 18:09:37 +02:00
dmar.c iommu/vt-d: Force IOMMU on for platform opt in hint 2018-12-05 12:01:55 +03:00
exynos-iommu.c IOMMU Update for Linux v4.19 2018-08-24 13:10:38 -07:00
fsl_pamu_domain.c Merge branches 'arm/renesas', 'arm/smmu', 'ppc/pamu', 'x86/vt-d', 'x86/amd' and 'core' into next 2018-10-10 18:09:37 +02:00
fsl_pamu_domain.h iommu/pamu: Fix PAMU boot crash 2017-08-23 16:28:09 +02:00
fsl_pamu.c iommu: fsl_pamu: use for_each_of_cpu_node iterator 2018-09-28 14:25:58 -05:00
fsl_pamu.h iommu/pamu: Fix PAMU boot crash 2017-08-23 16:28:09 +02:00
intel_irq_remapping.c iommu/vt-d: Relocate struct/function declarations to its header files 2018-09-25 14:33:43 +02:00
intel-iommu-debugfs.c iommu/vt-d: Add debugfs support to show context internals 2018-09-25 14:33:44 +02:00
intel-iommu.c iommu/vt-d: Do not enable ATS for untrusted devices 2018-12-05 12:01:56 +03:00
intel-pasid.c iommu/vt-d: Per PCI device pasid table interfaces 2018-07-20 14:44:24 +02:00
intel-pasid.h iommu/vt-d: Handle memory shortage on pasid table allocation 2018-09-25 14:33:02 +02:00
intel-svm.c iommu/vt-d: Fix NULL pointer dereference in prq_event_thread() 2018-11-06 16:46:24 +01:00
io-pgtable-arm-v7s.c iommu/io-pgtable-arm-v7s: Add support for non-strict mode 2018-10-01 13:01:34 +01:00
io-pgtable-arm.c iommu/io-pgtable-arm: Add support for non-strict mode 2018-10-01 13:01:33 +01:00
io-pgtable.c iommu/io-pgtable: Fix a brace coding style issue. 2016-04-05 15:34:29 +02:00
io-pgtable.h iommu/io-pgtable-arm: Add support for non-strict mode 2018-10-01 13:01:33 +01:00
iommu-debugfs.c iommu: Enable debugfs exposure of IOMMU driver internals 2018-07-06 14:06:30 +02:00
iommu-sysfs.c iommu: Fix wrong freeing of iommu_device->dev 2017-08-15 13:58:48 +02:00
iommu-traces.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iommu.c Merge branches 'arm/renesas', 'arm/smmu', 'ppc/pamu', 'x86/vt-d', 'x86/amd' and 'core' into next 2018-10-10 18:09:37 +02:00
iova.c iommu/iova: Optimise attempts to allocate iova from 32bit address range 2018-09-25 10:18:27 +02:00
ipmmu-vmsa.c iommu/ipmmu-vmsa: Fix crash on early domain free 2018-11-08 10:26:35 +01:00
irq_remapping.c irq_remapping: Use apic_ack_irq() 2018-06-06 15:18:20 +02:00
irq_remapping.h irq_remapping: Use apic_ack_irq() 2018-06-06 15:18:20 +02:00
Kconfig IOMMU Updates for Linux v4.20 2018-10-26 10:50:10 -07:00
Makefile iommu/vt-d: Enable base Intel IOMMU debugfs support 2018-09-25 14:33:43 +02:00
msm_iommu_hw-8xxx.h iommu/msm: Move mach includes to iommu directory 2013-08-06 11:18:03 -07:00
msm_iommu.c IOMMU Update for Linux v4.19 2018-08-24 13:10:38 -07:00
msm_iommu.h iommu/msm: Make use of iommu_device_register interface 2017-02-10 13:44:57 +01:00
mtk_iommu_v1.c mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
mtk_iommu.c mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
mtk_iommu.h iommu/mediatek: Fix protect memory setting 2018-03-21 06:13:57 -05:00
of_iommu.c iommu/of: support iommu configuration for fsl-mc devices 2018-09-25 09:47:52 +02:00
omap-iommu-debug.c iommu/omap: Fix debugfs_create_*() usage 2018-01-17 14:23:33 +01:00
omap-iommu.c Merge branches 'arm/shmobile', 'arm/renesas', 'arm/msm', 'arm/smmu', 'arm/omap', 'x86/amd', 'x86/vt-d' and 'core' into next 2018-08-08 12:02:27 +02:00
omap-iommu.h iommu/omap: Add support to program multiple iommus 2017-09-19 11:32:05 +02:00
omap-iopgtable.h iommu/omap: Use BIT(x) macros in omap-iopgtable.h 2015-08-03 16:04:42 +02:00
qcom_iommu.c IOMMU Update for Linux v4.19 2018-08-24 13:10:38 -07:00
rockchip-iommu.c iommu/rockchip: Free irqs in shutdown handler 2018-09-25 11:13:34 +02:00
s390-iommu.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tegra-gart.c iommu: Remove the ->map_sg indirection 2018-08-08 11:06:20 +02:00
tegra-smmu.c iommu: Remove the ->map_sg indirection 2018-08-08 11:06:20 +02:00