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linux/drivers/iommu/intel
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Liu Yi L 1c31964eca iommu/vt-d: Move intel_iommu info from struct intel_svm to struct intel_svm_dev 
commit 9ad9f45b3b upstream.

'struct intel_svm' is shared by all devices bound to a give process,
but records only a single pointer to a 'struct intel_iommu'. Consequently,
cache invalidations may only be applied to a single DMAR unit, and are
erroneously skipped for the other devices.

In preparation for fixing this, rework the structures so that the iommu
pointer resides in 'struct intel_svm_dev', allowing 'struct intel_svm'
to track them in its device list.

Fixes: 1c4f88b7f1 ("iommu/vt-d: Shared virtual address in scalable mode")
Cc: Lu Baolu <baolu.lu@linux.intel.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Raj Ashok <ashok.raj@intel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Reported-by: Guo Kaijie <Kaijie.Guo@intel.com>
Reported-by: Xin Zeng <xin.zeng@intel.com>
Signed-off-by: Guo Kaijie <Kaijie.Guo@intel.com>
Signed-off-by: Xin Zeng <xin.zeng@intel.com>
Signed-off-by: Liu Yi L <yi.l.liu@intel.com>
Tested-by: Guo Kaijie <Kaijie.Guo@intel.com>
Cc: stable@vger.kernel.org # v5.0+
Acked-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/1609949037-25291-2-git-send-email-yi.l.liu@intel.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2021-01-12 20:18:24 +01:00
..
debugfs.c iommu/vt-d: Rename intel-pasid.h to pasid.h 2020-07-24 10:51:21 +02:00
dmar.c iommu/vt-d: Don't read VCCAP register unless it exists 2020-11-26 14:50:24 +00:00
iommu.c iommu/vt-d: include conditionally on CONFIG_INTEL_IOMMU_SVM 2020-12-30 11:53:14 +01:00
irq_remapping.c iommu/vt-d: Remove domain search for PCI/MSI[X] 2020-09-16 16:52:38 +02:00
Kconfig IOMMU Updates for Linux v5.9 2020-08-11 14:13:24 -07:00
Makefile iommu/vt-d: Move Kconfig and Makefile bits down into intel directory 2020-07-29 14:14:55 +02:00
pasid.c drm, iommu: Change type of pasid to u32 2020-09-17 19:21:16 +02:00
pasid.h drm, iommu: Change type of pasid to u32 2020-09-17 19:21:16 +02:00
svm.c iommu/vt-d: Move intel_iommu info from struct intel_svm to struct intel_svm_dev 2021-01-12 20:18:24 +01:00
trace.c iommu/vt-d: Move Intel IOMMU driver into subdirectory 2020-06-10 17:46:43 +02:00