Two late fixes for the AMD IOMMU driver:
* One adds an additional check to the io page-fault handler to
avoid a BUG_ON being hit in handle_mm_fault()
* Second patch fixes a problem with devices writing to the
system management area and were blocked by the IOMMU because
the driver wrongly cleared out the DTE flags allowing that
access.
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Merge tag 'iommu-fixes-v4.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu fixes from Joerg Roedel:
"Two late fixes for the AMD IOMMU driver:
- add an additional check to the io page-fault handler to avoid a
BUG_ON being hit in handle_mm_fault()
- fix a problem with devices writing to the system management area
and were blocked by the IOMMU because the driver wrongly cleared
out the DTE flags allowing that access"
* tag 'iommu-fixes-v4.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/amd: Don't clear DTE flags when modifying it
iommu/amd: Fix BUG when faulting a PROT_NONE VMA