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SubjectRe: [RESEND PATCH V6 5/6] dmaengine: pl330: Make sure microcode is privileged
On Fri, Dec 02, 2016 at 08:25:08PM +0530, Sricharan R wrote:
> From: Mitchel Humpherys <>
> 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 <>


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