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Lu Baolu f825fd534f iommu/vt-d: Fix lockdep splat in iommu_flush_dev_iotlb() 
[ Upstream commit 1a3f2fd7fc4e8f24510830e265de2ffb8e3300d2 ]

Lock(&iommu->lock) without disabling irq causes lockdep warnings.

[   12.703950] ========================================================
[   12.703962] WARNING: possible irq lock inversion dependency detected
[   12.703975] 5.9.0-rc6+ #659 Not tainted
[   12.703983] --------------------------------------------------------
[   12.703995] systemd-udevd/284 just changed the state of lock:
[   12.704007] ffffffffbd6ff4d8 (device_domain_lock){..-.}-{2:2}, at:
               iommu_flush_dev_iotlb.part.57+0x2e/0x90
[   12.704031] but this lock took another, SOFTIRQ-unsafe lock in the past:
[   12.704043]  (&iommu->lock){+.+.}-{2:2}
[   12.704045]

               and interrupts could create inverse lock ordering between
               them.

[   12.704073]
               other info that might help us debug this:
[   12.704085]  Possible interrupt unsafe locking scenario:

[   12.704097]        CPU0                    CPU1
[   12.704106]        ----                    ----
[   12.704115]   lock(&iommu->lock);
[   12.704123]                                local_irq_disable();
[   12.704134]                                lock(device_domain_lock);
[   12.704146]                                lock(&iommu->lock);
[   12.704158]   <Interrupt>
[   12.704164]     lock(device_domain_lock);
[   12.704174]
                *** DEADLOCK ***

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20200927062428.13713-1-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-10-14 10:33:02 +02:00
..
amd_iommu_debugfs.c
…
amd_iommu_init.c
iommu/amd: Use cmpxchg_double() when updating 128-bit IRTE
2020-09-26 18:03:15 +02:00
amd_iommu_proto.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
amd_iommu_quirks.c
iommu/amd: Apply the same IVRS IOAPIC workaround to Acer Aspire A315-41
2019-10-30 10:24:03 +01:00
amd_iommu_types.h
iommu/amd: Fix the configuration of GCR3 table root pointer
2020-04-23 10:36:42 +02:00
amd_iommu_v2.c
iommu/amd: Do not use IOMMUv2 functionality when SME is active
2020-09-17 13:47:49 +02:00
amd_iommu.c
iommu/amd: Use cmpxchg_double() when updating 128-bit IRTE
2020-09-26 18:03:15 +02:00
amd_iommu.h
iommu/amd: Override wrong IVRS IOAPIC on Raven Ridge systems
2019-08-23 10:26:48 +02:00
arm-smmu-impl.c
iommu/arm-smmu: Make private implementation details static
2019-08-20 10:58:03 +01:00
arm-smmu-v3.c
iommu/arm-smmu-v3: Use WRITE_ONCE() when changing validity of an STE
2020-02-24 08:36:49 +01:00
arm-smmu.c
iommu/arm-smmu: Free context bitmap in the err path of arm_smmu_init_domain_context
2019-10-01 12:13:16 +01:00
arm-smmu.h
Merge branches 'for-joerg/arm-smmu/smmu-v2' and 'for-joerg/arm-smmu/smmu-v3' into for-joerg/arm-smmu/updates
2019-08-23 15:05:45 +01:00
dma-iommu.c
iommu/dma: Fix MSI reservation allocation
2020-03-18 07:17:54 +01:00
dmar.c
iommu/vt-d: Enable PCI ACS for platform opt in hint
2020-06-30 15:36:58 -04:00
exynos-iommu.c
iommu/exynos: add missing put_device() call in exynos_iommu_of_xlate()
2020-10-07 08:01:28 +02:00
fsl_pamu_domain.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 266
2019-06-05 17:30:28 +02:00
fsl_pamu_domain.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 266
2019-06-05 17:30:28 +02:00
fsl_pamu.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 266
2019-06-05 17:30:28 +02:00
fsl_pamu.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 266
2019-06-05 17:30:28 +02:00
hyperv-iommu.c
irqdomain/treewide: Keep firmware node unconditionally allocated
2020-07-29 10:18:28 +02:00
intel_irq_remapping.c
iommu/vt-d: Serialize IOMMU GCMD register modifications
2020-09-09 19:12:29 +02:00
intel-iommu-debugfs.c
iommu/vt-d: Populate debugfs if IOMMUs are detected
2020-04-01 11:01:56 +02:00
intel-iommu.c
iommu/vt-d: Fix lockdep splat in iommu_flush_dev_iotlb()
2020-10-14 10:33:02 +02:00
intel-pasid.c
iommu/vt-d: Match CPU and IOMMU paging mode
2020-02-24 08:36:43 +01:00
intel-pasid.h
…
intel-svm.c
iommu/vt-d: Fix page request descriptor size
2020-04-23 10:36:41 +02:00
intel-trace.c
iommu/vt-d: Add trace events for device dma map/unmap
2019-09-11 12:34:30 +02:00
io-pgtable-arm-v7s.c
Merge branch 'arm/smmu' into arm/mediatek
2019-08-30 16:12:10 +02:00
io-pgtable-arm.c
iommu/io-pgtable-arm: Support all Mali configurations
2019-10-01 12:16:47 +01:00
io-pgtable.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
iommu-debugfs.c
…
iommu-sysfs.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
iommu-traces.c
…
iommu.c
iommu: Fix reference count leak in iommu_group_alloc.
2020-06-03 08:21:28 +02:00
iova.c
iommu/iova: Don't BUG on invalid PFNs
2020-09-03 11:26:43 +02:00
ipmmu-vmsa.c
iommu/ipmmu-vmsa: Remove dev_err() on platform_get_irq() failure
2019-10-30 10:16:37 +01:00
irq_remapping.c
…
irq_remapping.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
Kconfig
iommu/amd: Use cmpxchg_double() when updating 128-bit IRTE
2020-09-26 18:03:15 +02:00
Makefile
Merge branches 'arm/omap', 'arm/exynos', 'arm/smmu', 'arm/mediatek', 'arm/qcom', 'arm/renesas', 'x86/amd', 'x86/vt-d' and 'core' into next
2019-09-11 12:39:19 +02:00
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
Merge branch 'for-joerg/batched-unmap' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into core
2019-08-20 11:09:43 +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
Devicetree updates for v5.4:
2019-09-19 13:48:37 -07:00
mtk_iommu.c
iommu/mediatek: Add a new tlb_lock for tlb_flush
2020-01-17 19:48:59 +01:00
mtk_iommu.h
iommu/mediatek: Add a new tlb_lock for tlb_flush
2020-01-17 19:48:59 +01:00
of_iommu.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 335
2019-06-05 17:37:06 +02:00
omap-iommu-debug.c
iommu/omap: Check for failure of a call to omap_iommu_dump_ctx
2020-08-21 13:05:33 +02:00
omap-iommu.c
Merge branches 'arm/omap', 'arm/exynos', 'arm/smmu', 'arm/mediatek', 'arm/qcom', 'arm/renesas', 'x86/amd', 'x86/vt-d' and 'core' into next
2019-09-11 12:39:19 +02:00
omap-iommu.h
iommu/omap: add support for late attachment of iommu devices
2019-08-09 17:37:10 +02:00
omap-iopgtable.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
qcom_iommu.c
iommu/qcom: Fix local_base status check
2020-05-06 08:15:14 +02:00
rockchip-iommu.c
iommu: rockchip: Free domain on .domain_free
2020-01-04 19:16:38 +01:00
s390-iommu.c
iommu: Pass struct iommu_iotlb_gather to ->unmap() and ->iotlb_sync()
2019-07-29 17:22:52 +01:00
tegra-gart.c
iommu: Pass struct iommu_iotlb_gather to ->unmap() and ->iotlb_sync()
2019-07-29 17:22:52 +01:00
tegra-smmu.c
iommu/tegra-smmu: Fix page tables in > 4 GiB memory
2020-01-04 19:16:39 +01:00
virtio-iommu.c
iommu/virtio: Reverse arguments to list_add
2020-05-14 07:58:29 +02:00