powerpc/mm: Fix hash table dump when memory is not contiguous
authorRashmica Gupta <rashmica.g@gmail.com>
Mon, 10 Apr 2017 02:04:04 +0000 (12:04 +1000)
committerMichael Ellerman <mpe@ellerman.id.au>
Wed, 12 Apr 2017 13:03:32 +0000 (23:03 +1000)
commit9e4114b3913cff37be509224116b6f58a2a3918f
treeb2908e912be6a81fc35c3daeb94e2a749522b14e
parentaaa229529244a1135b29353fefb001c430db79f0
powerpc/mm: Fix hash table dump when memory is not contiguous

The current behaviour of the hash table dump assumes that memory is contiguous
and iterates from the start of memory to (start + size of memory). When memory
isn't physically contiguous, this doesn't work.

If memory exists at 0-5 GB and 6-10 GB then the current approach will check if
entries exist in the hash table from 0GB to 9GB. This patch changes the
behaviour to iterate over any holes up to the end of memory.

Fixes: 1515ab932156 ("powerpc/mm: Dump hash table")
Signed-off-by: Rashmica Gupta <rashmica.g@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/mm/dump_hashpagetable.c