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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: 1515ab9321 ("powerpc/mm: Dump hash table")
Signed-off-by: Rashmica Gupta <rashmica.g@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Rashmica Gupta 2017-04-10 12:04:04 +10:00 committed by Michael Ellerman
parent aaa2295292
commit 9e4114b391
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/mm/dump_hashpagetable.c
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@ -468,7 +468,7 @@ static void walk_linearmapping(struct pg_state *st)
unsigned long psize = 1 << mmu_psize_defs[mmu_linear_psize].shift;
for (addr = PAGE_OFFSET; addr < PAGE_OFFSET +
memblock_phys_mem_size(); addr += psize)
memblock_end_of_DRAM(); addr += psize)
hpte_find(st, addr, mmu_linear_psize);
}