Re: [RESEND PATCH V6 5/6] dmaengine: pl330: Make sure microcode is privileged

[Vinod Koul]

On Fri, Dec 02, 2016 at 08:25:08PM +0530, Sricharan R wrote:
> From: Mitchel Humpherys <mitchelh@xxxxxxxxxxxxxx>
> 
> The PL330 performs privileged instruction fetches.  This can result in
> SMMU permission faults on SMMUs that implement the ARMv8 VMSA, which
> specifies that mappings that are writeable at one execution level shall
> not be executable at any higher-privileged level.  Fix this by using the
> DMA_ATTR_PRIVILEGED attribute, which will ensure that the microcode
> IOMMU mapping is only accessible to the privileged level.

Acked-by: Vinod Koul <vinod.koul@xxxxxxxxx>

-- 
~Vinod