Vladimir Murzin 1b11d39e6a ARM: NOMMU: Set ARM_DMA_MEM_BUFFERABLE for M-class cpus
Now, we have dedicated non-cacheable region for consistent DMA
operations. However, that region can still be marked as bufferable by
MPU, so it'd be safer to have barriers by default. M-class machines
that didn't need it until now also likely won't need it in the future,
therefore, we offer this as an option.

Tested-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Tested-by: Andras Szemzo <sza@esh.hu>
Tested-by: Alexandre TORGUE <alexandre.torgue@st.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Christoph Hellwig <hch@lst.de>
2017-06-30 10:03:10 -07:00
..
2017-05-08 19:03:25 -07:00
2017-05-08 17:15:13 -07:00
2016-07-26 16:19:19 -07:00