Re: [PATCH V7 4/8] common: DMA-mapping: add DMA_ATTR_PRIVILEGED attribute

2016-12-13 Thread Robin Murphy
On 12/12/16 18:38, Sricharan R wrote: > From: Mitchel Humpherys > > This patch adds the DMA_ATTR_PRIVILEGED attribute to the DMA-mapping > subsystem. > > Some advanced peripherals such as remote processors and GPUs perform > accesses to DMA buffers in both privileged "supervisor" and unprivilege

[PATCH V7 4/8] common: DMA-mapping: add DMA_ATTR_PRIVILEGED attribute

2016-12-12 Thread Sricharan R
From: Mitchel Humpherys This patch adds the DMA_ATTR_PRIVILEGED attribute to the DMA-mapping subsystem. Some advanced peripherals such as remote processors and GPUs perform accesses to DMA buffers in both privileged "supervisor" and unprivileged "user" modes. This attribute is used to indicate