Oleksandr Tyshchenko ed46e66cc1 iommu/io-pgtable-arm: Check for leaf entry before dereferencing it
Do a check for already installed leaf entry at the current level before
dereferencing it in order to avoid walking the page table down with
wrong pointer to the next level.

Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
CC: Will Deacon <will.deacon@arm.com>
CC: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-03-10 18:23:34 +00:00
..
2015-02-03 18:47:18 +01:00
2016-02-16 08:04:06 -08:00
2017-01-04 15:35:19 +01:00