Re: [PATCH v1] gpu: host1x: Skip IOMMU initialization if firewall is enabled

On Saturday, 19 May 2018 04:07:10 MSK Dmitry Osipenko wrote:

Host1x's CDMA can't access the command buffers if IOMMU and Host1x firewall are enabled in the kernels config because firewall doesn't map the copied buffer into IOVA space. Fix this by skipping IOMMU initialization if firewall is enabled as firewall merges sparse cmdbufs into a single contiguous buffer and hence IOMMU isn't needed in this case.

Signed-off-by: Dmitry Osipenko digetx@gmail.com

Thierry, please consider applying this patch.