Hi, This patch set improves the PASID id and PASID table management for Intel IOMMU driver.
PATCH 1~3 replace per IOMMU idr name space with a global one. Current per IOMMU idr doesn't work in some cases where one application (associated with a PASID) might talk to two physical devices simultaneously while the two devices could reside behind two different IOMMU units. PATCH 4~9 implement per device PASID table. Current per IOMMU PASID table implementation is insecure in the cases where multiple devices under one single IOMMU unit support PASID feature. With per domain PASID table, we can achieve finer protection and isolation granularity. This has been discussed at https://lkml.org/lkml/2018/5/16/154. Best regards, Lu Baolu Change log: v1->v2: - Patches have been reviewed by "Liu Yi L <yi.l....@intel.com>". - An error case handling was added in PATCH 6/9. - Some commit messages are refined to be more accurate. v2->v3: - Patches rebased on top of v4.18-rc1. - Replace per-domain with per-device pasid table. v3->v4: - Patches rebased on top of Joerg's x86/vt-d branch. v4->v5: - Change the top of the pasid value - Refine the code to clear pasid entry Lu Baolu (9): iommu/vt-d: Global PASID name space iommu/vt-d: Avoid using idr_for_each_entry() iommu/vt-d: Apply global PASID in SVA iommu/vt-d: Move device_domain_info to header iommu/vt-d: Add for_each_device_domain() helper iommu/vt-d: Per PCI device pasid table interfaces iommu/vt-d: Allocate and free pasid table iommu/vt-d: Apply per pci device pasid table in SVA iommu/vt-d: Remove the obsolete per iommu pasid tables drivers/iommu/Makefile | 2 +- drivers/iommu/intel-iommu.c | 143 +++++++++++--------------- drivers/iommu/intel-pasid.c | 239 ++++++++++++++++++++++++++++++++++++++++++++ drivers/iommu/intel-pasid.h | 39 ++++++++ drivers/iommu/intel-svm.c | 79 ++++++--------- include/linux/intel-iommu.h | 72 ++++++++++++- 6 files changed, 441 insertions(+), 133 deletions(-) create mode 100644 drivers/iommu/intel-pasid.c create mode 100644 drivers/iommu/intel-pasid.h -- 2.7.4 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
