tree efbfb74d7f5f11f50ca103686a726dad8398e9e0
parent 38ddf41b198e21d3ecbe5752e875857b7ce7589e
author FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> 1221045580 +0900
committer Ingo Molnar <mingo@elte.hu> 1221821964 +0200

AMD IOMMU: avoid unnecessary low zone allocation in alloc_coherent

x86's common alloc_coherent (dma_alloc_coherent in dma-mapping.h) sets
up the gfp flag according to the device dma_mask but AMD IOMMU doesn't
need it for devices that the IOMMU can do virtual mappings for. This
patch avoids unnecessary low zone allocation.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>