tree 6bf22e39739baab0e4837526febdef85e3eef441
parent 6f51c8a58397979d8cb38616b51da4d54c7e9e54
author Nate Watterson <nwatters@codeaurora.org> 1482293508 -0500
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1510757593 +0100

iommu/arm-smmu-v3: Clear prior settings when updating STEs


[ Upstream commit 810871c57011eb3e89e6768932757f169d666cd2 ]

To prevent corruption of the stage-1 context pointer field when
updating STEs, rebuild the entire containing dword instead of
clearing individual fields.

Signed-off-by: Nate Watterson <nwatters@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>