tree 991c21483223261f8c8a8e04498c1ecd235245ed
parent 0b115ef100a3734265a46e13707446d2de00df5c
author Tymoteusz Kielan <tymoteusz.kielan@intel.com> 1473161754 -0700
committer Doug Ledford <dledford@redhat.com> 1475412127 -0400

IB/hfi1: Fix user-space buffers mapping with IOMMU enabled

The dma_XXX API functions return bus addresses which are
physical addresses when IOMMU is disabled. Buffer
mapping to user-space is done via remap_pfn_range() with PFN
based on bus address instead of physical. This results in
wrong pages being mapped to user-space when IOMMU is enabled.

Reviewed-by: Mitko Haralanov <mitko.haralanov@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Tymoteusz Kielan <tymoteusz.kielan@intel.com>
Signed-off-by: Andrzej Kacprowski <andrzej.kacprowski@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>