Robin Murphy 98a8f63e56 iommu/mtk: Avoid redundant TLB syncs locally ... Under certain circumstances, the io-pgtable code may end up issuing two TLB sync operations without any intervening invalidations. This goes badly for the M4U hardware, since it means the second sync ends up polling for a non-existent operation to finish, and as a result times out and warns. The io_pgtable_tlb_* helpers implement a high-level optimisation to avoid issuing the second sync at all in such cases, but in order to work correctly that requires all pagetable operations to be serialised under a lock, thus is no longer applicable to all io-pgtable users. Since we're the only user actually relying on this flag for correctness, let's reimplement it locally to avoid the headache of trying to make the high-level version concurrency-safe for other users. CC: Yong Wu <yong.wu@mediatek.com> CC: Matthias Brugger <matthias.bgg@gmail.com> Tested-by: Yong Wu <yong.wu@mediatek.com> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>		2017-07-20 10:30:27 +01:00
..
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: Reintroduce locking around TLB sync operations	2017-07-20 10:30:26 +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	iommu/fsl: Convert to device_group call-back	2015-10-22 00:00:49 +02:00
fsl_pamu_domain.h	iommu/fsl: Make use of domain_alloc and domain_free	2015-03-31 15:32:14 +02:00
fsl_pamu.c	powerpc/fsl: Move fsl_guts.h out of arch/powerpc	2015-10-21 18:05:50 -05:00
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 Updates for Linux v4.13	2017-07-12 10:00:04 -07:00
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	iommu/io-pgtable: Fix a brace coding style issue.	2016-04-05 15:34:29 +02:00
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: Add iommu_error class event to iommu trace	2013-09-25 11:07:04 +02:00
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	iommu, x86: Setup Posted-Interrupts capability for Intel iommu	2015-06-12 11:33:52 +02:00
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	iommu/msm: Move mach includes to iommu directory	2013-08-06 11:18:03 -07:00
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/mtk: Avoid redundant TLB syncs locally	2017-07-20 10:30:27 +01:00
mtk_iommu.h	iommu/mtk: Avoid redundant TLB syncs locally	2017-07-20 10:30:27 +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	iommu/omap: Use BIT(x) macros in omap-iopgtable.h	2015-08-03 16:04:42 +02:00
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	Merge branches 'iommu/fixes', 'x86/vt-d', 'x86/amd', 'arm/smmu', 'arm/tegra' and 'core' into next	2015-04-02 13:33:19 +02:00
tegra-smmu.c	iommu: Remove pci.h include from trace/events/iommu.h	2017-04-29 00:20:49 +02:00