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Date:   Tue, 27 Mar 2018 18:45:05 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Sebastian Ott <sebott@linux.vnet.ibm.com>
Cc:     Christoph Hellwig <hch@lst.de>,
        Jesper Nilsson <jesper.nilsson@axis.com>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        linux-kernel@vger.kernel.org
Subject: Re: dma_zalloc_coherent broken with
        57bf5a8963f80fb3828c46c3e3a5b2dd790e09a7
Message-ID: <20180327164505.GA10522@lst.de>
References: <alpine.LFD.2.21.1803270944490.1726@schleppi> <20180327143341.GA4968@lst.de> <alpine.LFD.2.21.1803271717580.26440@schleppi>
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On Tue, Mar 27, 2018 at 05:24:10PM +0200, Sebastian Ott wrote:
> What do you mean by current implementations? Arch specific code? At least
> on s390 we don't do that. dma-mapping.h doesn't do it either.

The arch implementations should do it.  Seems like s390 and potentially
a few others don't.  I'm a little slow due to a cast on one arm, but I'll
do an audit and will fix up anything I'll find.