On Mon, Dec 10, 2018 at 07:19:30PM +, Robin Murphy wrote:
> On 08/12/2018 17:36, Christoph Hellwig wrote:
>> There is no need to have an additional kernel mapping for a contiguous
>> allocation if the device already is DMA coherent, so skip it.
>
> FWIW, the "need" was that it kept the code in
On 08/12/2018 17:36, Christoph Hellwig wrote:
There is no need to have an additional kernel mapping for a contiguous
allocation if the device already is DMA coherent, so skip it.
FWIW, the "need" was that it kept the code in this path simple and the
mapping behaviour consistent with the regula
There is no need to have an additional kernel mapping for a contiguous
allocation if the device already is DMA coherent, so skip it.
Signed-off-by: Christoph Hellwig
---
arch/arm64/mm/dma-mapping.c | 35 ++-
1 file changed, 22 insertions(+), 13 deletions(-)
diff
