On 11 Oct 2024, at 10:56, Ritesh Harjani (IBM) wrote: > cma_init_reserved_mem() checks base and size alignment with > CMA_MIN_ALIGNMENT_BYTES. However, some users might call this during > early boot when pageblock_order is 0. That means if base and size does > not have pageblock_order alignment, it can cause functional failures > during cma activate area. > > So let's enforce pageblock_order to be non-zero during > cma_init_reserved_mem(). > > Acked-by: David Hildenbrand <david@xxxxxxxxxx> > Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@xxxxxxxxx> > --- > v2 -> v3: Separated the series into 2 as discussed in v2. > [v2]: https://lore.kernel.org/linuxppc-dev/cover.1728585512.git.ritesh.list@xxxxxxxxx/ > > mm/cma.c | 9 +++++++++ > 1 file changed, 9 insertions(+) > Acked-by: Zi Yan <ziy@xxxxxxxxxx> Best Regards, Yan, Zi
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