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From: Christoph Hellwig <hch@lst.de>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Subject: swiotlb cleanup
Date: Tue, 15 May 2018 20:05:17 +0200
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Hi Konrad,

below are a few swiotlb patches.  Mostly just cleanups, but the removal
of the panic option is an actual change in (rarely used) functionality.