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6ad931a232
linux-stable/drivers/iommu/intel
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Lu Baolu 6ad931a232 iommu/vt-d: Avoid unnecessary global DMA cache invalidation 
Some VT-d hardware implementations invalidate all DMA remapping hardware
translation caches as part of SRTP flow. The VT-d spec adds a ESRTPS
(Enhanced Set Root Table Pointer Support, section 11.4.2 in VT-d spec)
capability bit to indicate this. With this bit set, software has no need
to issue the global invalidation request.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20220919062523.3438951-3-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2022-09-26 15:52:26 +02:00
..
cap_audit.c iommu/vt-d: Rename cap_5lp_support to cap_fl5lp_support 2022-09-26 15:52:25 +02:00
cap_audit.h iommu/vt-d: Check FL and SL capability sanity in scalable mode 2021-10-18 12:31:48 +02:00
debugfs.c iommu/vt-d: Replace spin_lock_irqsave() with spin_lock() 2022-07-15 10:21:36 +02:00
dmar.c Revert "iommu/vt-d: Fix possible recursive locking in intel_iommu_init()" 2022-09-21 10:22:54 +02:00
iommu.c iommu/vt-d: Avoid unnecessary global DMA cache invalidation 2022-09-26 15:52:26 +02:00
iommu.h iommu/vt-d: Avoid unnecessary global DMA cache invalidation 2022-09-26 15:52:26 +02:00
irq_remapping.c iommu/vt-d: Avoid unnecessary global IRTE cache invalidation 2022-09-26 15:52:26 +02:00
Kconfig iommu/vt-d: Decouple PASID & PRI enabling from SVA 2022-09-26 15:52:24 +02:00
Makefile iommu/vt-d: Add common code for dmar latency performance monitors 2021-06-10 09:06:13 +02:00
pasid.c iommu/vt-d: Rename cap_5lp_support to cap_fl5lp_support 2022-09-26 15:52:25 +02:00
pasid.h iommu/vt-d: Remove clearing translation data in disable_dmar_iommu() 2022-07-15 10:21:34 +02:00
perf.c iommu/vt-d: Move include/linux/intel-iommu.h under iommu 2022-07-15 10:21:31 +02:00
perf.h iommu/vt-d: Add common code for dmar latency performance monitors 2021-06-10 09:06:13 +02:00
svm.c iommu/vt-d: Rename cap_5lp_support to cap_fl5lp_support 2022-09-26 15:52:25 +02:00
trace.c iommu/vt-d: Move trace/events/intel_iommu.h under iommu 2022-07-15 10:21:28 +02:00
trace.h iommu/vt-d: Move include/linux/intel-iommu.h under iommu 2022-07-15 10:21:31 +02:00