arm64: Limit the CMA buffer to 32-bit if ZONE_DMA

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When the CMA buffer is allocated, it is too early to know whether
devices will require ZONE_DMA memory. This patch limits the CMA buffer
to (DMA_BIT_MASK(32) + 1) if CONFIG_ZONE_DMA is enabled.

In addition, it computes the dma_to_phys(DMA_BIT_MASK(32)) before the
increment (no current functional change).

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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This commit is contained in:

Catalin Marinas 2014-06-13 13:41:20 +01:00

parent 1712ef43af

commit 2d5a5612bc

1 changed files with 8 additions and 2 deletions

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arch/arm64/mm/init.c

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