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From:   Christoph Hellwig <hch@lst.de>
To:     x86@kernel.org
Cc:     Evgeniy Didin <Evgeniy.Didin@synopsys.com>,
        Sebastian Ott <sebott@linux.vnet.ibm.com>,
        iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Subject: tip/x86/dma fix for arc and s390 (at least)
Date:   Wed, 28 Mar 2018 15:35:34 +0200
Message-Id: <20180328133535.17302-1-hch@lst.de>
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Hi all,

this restores previous __GFP_ZERO passthrough behavior for now as arc and
s390 rely on it.  Needs more work to sort out the API mess in the long run.