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Date:   Thu, 6 Dec 2018 16:01:52 +0100
From:   Christoph Hellwig <hch@lst.de>
To:     iommu@lists.linux-foundation.org
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Subject: Re: [PATCH 2/2] arch: switch the default on ARCH_HAS_SG_CHAIN
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I've picked this up for the dma-mapping for-next tree.