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From:   Christoph Hellwig <hch@lst.de>
To:     iommu@lists.linux-foundation.org
Cc:     Marek Szyprowski <m.szyprowski@samsung.com>,
        Robin Murphy <robin.murphy@arm.com>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        linux-kernel@vger.kernel.org
Subject: document dma-direct zone selection
Date:   Mon,  1 Oct 2018 13:10:15 -0700
Message-Id: <20181001201016.32639-1-hch@lst.de>
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Hi all,

this patch documents the dma-direct zone selection, as it doesn't
seem quite obvuious enough.