On Thu, 2017-07-27 at 15:35:53 UTC, Oliver O'Halloran wrote:

The ISA radix translation tree contains two different types of entry,
directories and leaves. The formats of the two entries are different
with the directory entries containing no spare bits for use by software.
As a result we need to ensure that the *_devmap() family of functions
check fail for everything except leaf (PTE) entries.

Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Tested-by: Laurent Vivier <redacted>
Tested-by: Jose Ricardo Ziviani <redacted>
Reviewed-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/c9c98bc5cc2ab4e0d5c9ad58286fa7

cheers