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(parent: 8140a95) | patch
intel-iommu: fix superpage support in pfn_to_dma_pte()
authorAllen Kay <allen.m.kay@intel.com>
Fri, 14 Oct 2011 19:32:46 +0000 (12:32 -0700)
committerDavid Woodhouse <David.Woodhouse@intel.com>
Wed, 19 Oct 2011 11:06:22 +0000 (12:06 +0100)
commit4399c8bf2b9093696fa8160d79712e7346989c46
tree66363d75fa8e346b84ba6fcdca33f78858456328tree | snapshot
parent8140a95d228efbcd64d84150e794761a32463947commit | diff
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>
drivers/iommu/intel-iommu.c diff | blob | history
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