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author | Andrea Arcangeli <aarcange@redhat.com> | 2019-06-25 10:17:27 -0400 |
---|---|---|
committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-07-15 14:55:58 +1000 |
commit | 03800e0526ee25ed7c843ca1e57b69ac2a5af642 (patch) | |
tree | 84ae3ecd08d32fcb55c7b63b01d7a61d7d074c21 /arch/powerpc/sysdev/fsl_lbc.c | |
parent | c8b4083db915dfe5a3b4a755ad2317e0509b43f1 (diff) |
powerpc: fix off by one in max_zone_pfn initialization for ZONE_DMA
25078dc1f74be16b858e914f52cc8f4d03c2271a first introduced an off by
one error in the ZONE_DMA initialization of PPC_BOOK3E_64=y and since
9739ab7eda459f0669ec9807e0d9be5020bab88c the off by one applies to
PPC32=y too. This simply corrects the off by one and should resolve
crashes like below:
[ 65.179101] page 0x7fff outside node 0 zone DMA [ 0x0 - 0x7fff ]
Unfortunately in various MM places "max" means a non inclusive end of
range. free_area_init_nodes max_zone_pfn parameter is one case and
MAX_ORDER is another one (unrelated) that comes by memory.
Reported-by: Zorro Lang <zlang@redhat.com>
Fixes: 25078dc1f74b ("powerpc: use mm zones more sensibly")
Fixes: 9739ab7eda45 ("powerpc: enable a 30-bit ZONE_DMA for 32-bit pmac")
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190625141727.2883-1-aarcange@redhat.com
Diffstat (limited to 'arch/powerpc/sysdev/fsl_lbc.c')
0 files changed, 0 insertions, 0 deletions