tree 66363d75fa8e346b84ba6fcdca33f78858456328
parent 8140a95d228efbcd64d84150e794761a32463947
author Allen Kay <allen.m.kay@intel.com> 1318620766 -0700
committer David Woodhouse <David.Woodhouse@intel.com> 1319022382 +0100

intel-iommu: fix superpage support in pfn_to_dma_pte()

If target_level == 0, current code breaks out of the while-loop if
SUPERPAGE bit is set. We should also break out if PTE is not present.
If we don't do this, KVM calls to iommu_iova_to_phys() will cause
pfn_to_dma_pte() to create mapping for 4KiB pages.

Signed-off-by: Allen Kay <allen.m.kay@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>