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    Subject[PATCH v3 0/4] iommu/vt-d: Add prq report and response support
    Date
    Hi,

    This series adds page request event reporting and response support to
    the Intel IOMMU driver. This is necessary when the page requests must
    be processed by any component other than the vendor IOMMU driver. For
    example, when a guest page table was bound to a PASID through the
    iommu_ops->sva_bind_gpasid() api, the page requests should be routed to
    the guest, and after the page is served, the device should be responded
    with the result.

    Your review comments are very appreciated.

    Best regards,
    baolu

    Change log:
    v2->v3:
    - Adress Kevin's review comments
    https://lore.kernel.org/linux-iommu/20200706002535.9381-1-baolu.lu@linux.intel.com/T/#t
    - Set IOMMU_FAULT_PAGE_RESPONSE_NEEDS_PASID flag
    https://lore.kernel.org/linux-iommu/20200706002535.9381-1-baolu.lu@linux.intel.com/T/#m0190af2f6cf967217e9def6fa0fed4e0fe5a477e

    v1->v2:
    - v1 posted at https://lkml.org/lkml/2020/6/27/387
    - Remove unnecessary pci_get_domain_bus_and_slot()
    - Return error when sdev == NULL in intel_svm_page_response()

    Lu Baolu (4):
    iommu/vt-d: Refactor device_to_iommu() helper
    iommu/vt-d: Add a helper to get svm and sdev for pasid
    iommu/vt-d: Report page request faults for guest SVA
    iommu/vt-d: Add page response ops support

    drivers/iommu/intel/iommu.c | 56 ++----
    drivers/iommu/intel/svm.c | 332 ++++++++++++++++++++++++++++--------
    include/linux/intel-iommu.h | 6 +-
    3 files changed, 278 insertions(+), 116 deletions(-)

    --
    2.17.1

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