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(parent: 1712ef4) | patch
arm64: Limit the CMA buffer to 32-bit if ZONE_DMA
authorCatalin Marinas <catalin.marinas@arm.com>
Fri, 13 Jun 2014 12:41:20 +0000 (13:41 +0100)
committerCatalin Marinas <catalin.marinas@arm.com>
Wed, 18 Jun 2014 11:40:56 +0000 (12:40 +0100)
commit2d5a5612bceda8edd25b29f363c4e2c6cda28bab
tree7b26f52f615553aea4e531d2109a3ca6e6ce3417tree | snapshot
parent1712ef43af71b0a0498ad370f0829d6b85fa2dcacommit | diff
arm64: Limit the CMA buffer to 32-bit if ZONE_DMA

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>
arch/arm64/mm/init.c diff | blob | history
Domain: System / Kernel;