swiotlb: Add support for DMA_ATTR_SKIP_CPU_SYNC

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As a first step to making DMA_ATTR_SKIP_CPU_SYNC apply to architectures
beyond just ARM I need to make it so that the swiotlb will respect the
flag.  In order to do that I also need to update the swiotlb-xen since it
heavily makes use of the functionality.

Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad@kernel.org>

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Alexander Duyck 2016-11-02 07:13:02 -04:00 • committed by Konrad Rzeszutek Wilk

parent 7641842164

commit 0443fa003f

3 changed files with 49 additions and 27 deletions

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11

drivers/xen/swiotlb-xen.c

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6

include/linux/swiotlb.h

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59

lib/swiotlb.c

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